American Journal of Potato Research

american journal of potato research

Subject Area and Category

  • Agronomy and Crop Science
  • Plant Science

Potato Association of America

Publication type

1099209X, 18749380

1968, 1981, 1998-2023

Information

How to publish in this journal

[email protected]

american journal of potato research

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

CategoryYearQuartile
Agronomy and Crop Science1999Q2
Agronomy and Crop Science2000Q2
Agronomy and Crop Science2001Q2
Agronomy and Crop Science2002Q2
Agronomy and Crop Science2003Q2
Agronomy and Crop Science2004Q2
Agronomy and Crop Science2005Q2
Agronomy and Crop Science2006Q2
Agronomy and Crop Science2007Q2
Agronomy and Crop Science2008Q2
Agronomy and Crop Science2009Q2
Agronomy and Crop Science2010Q2
Agronomy and Crop Science2011Q1
Agronomy and Crop Science2012Q1
Agronomy and Crop Science2013Q2
Agronomy and Crop Science2014Q2
Agronomy and Crop Science2015Q2
Agronomy and Crop Science2016Q2
Agronomy and Crop Science2017Q2
Agronomy and Crop Science2018Q2
Agronomy and Crop Science2019Q2
Agronomy and Crop Science2020Q2
Agronomy and Crop Science2021Q2
Agronomy and Crop Science2022Q2
Agronomy and Crop Science2023Q2
Plant Science1999Q2
Plant Science2000Q2
Plant Science2001Q2
Plant Science2002Q2
Plant Science2003Q2
Plant Science2004Q2
Plant Science2005Q2
Plant Science2006Q2
Plant Science2007Q2
Plant Science2008Q2
Plant Science2009Q2
Plant Science2010Q2
Plant Science2011Q2
Plant Science2012Q2
Plant Science2013Q2
Plant Science2014Q2
Plant Science2015Q2
Plant Science2016Q2
Plant Science2017Q2
Plant Science2018Q2
Plant Science2019Q2
Plant Science2020Q2
Plant Science2021Q2
Plant Science2022Q2
Plant Science2023Q2

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

YearSJR
19990.618
20000.497
20010.554
20020.535
20030.639
20040.596
20050.447
20060.536
20070.520
20080.474
20090.454
20100.628
20110.774
20120.722
20130.513
20140.452
20150.550
20160.490
20170.611
20180.599
20190.401
20200.542
20210.531
20220.390
20230.378

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

YearDocuments
199947
200044
200152
200248
200343
200445
200547
200648
200742
200841
200953
201053
201151
201251
201357
201457
201583
201653
201760
201872
201964
202058
202140
202225
202340

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19990.683
Cites / Doc. (4 years)20000.601
Cites / Doc. (4 years)20010.870
Cites / Doc. (4 years)20020.776
Cites / Doc. (4 years)20030.838
Cites / Doc. (4 years)20040.743
Cites / Doc. (4 years)20050.819
Cites / Doc. (4 years)20060.945
Cites / Doc. (4 years)20071.115
Cites / Doc. (4 years)20080.984
Cites / Doc. (4 years)20091.017
Cites / Doc. (4 years)20101.196
Cites / Doc. (4 years)20111.354
Cites / Doc. (4 years)20121.641
Cites / Doc. (4 years)20131.447
Cites / Doc. (4 years)20141.269
Cites / Doc. (4 years)20151.366
Cites / Doc. (4 years)20161.254
Cites / Doc. (4 years)20171.620
Cites / Doc. (4 years)20181.356
Cites / Doc. (4 years)20191.384
Cites / Doc. (4 years)20201.651
Cites / Doc. (4 years)20211.890
Cites / Doc. (4 years)20221.812
Cites / Doc. (4 years)20232.027
Cites / Doc. (3 years)19990.683
Cites / Doc. (3 years)20000.573
Cites / Doc. (3 years)20010.779
Cites / Doc. (3 years)20020.727
Cites / Doc. (3 years)20030.840
Cites / Doc. (3 years)20040.825
Cites / Doc. (3 years)20050.735
Cites / Doc. (3 years)20060.948
Cites / Doc. (3 years)20071.179
Cites / Doc. (3 years)20080.934
Cites / Doc. (3 years)20090.786
Cites / Doc. (3 years)20101.221
Cites / Doc. (3 years)20111.395
Cites / Doc. (3 years)20121.637
Cites / Doc. (3 years)20131.329
Cites / Doc. (3 years)20141.138
Cites / Doc. (3 years)20151.364
Cites / Doc. (3 years)20161.234
Cites / Doc. (3 years)20171.534
Cites / Doc. (3 years)20181.362
Cites / Doc. (3 years)20191.124
Cites / Doc. (3 years)20201.490
Cites / Doc. (3 years)20211.907
Cites / Doc. (3 years)20221.944
Cites / Doc. (3 years)20231.789
Cites / Doc. (2 years)19990.794
Cites / Doc. (2 years)20000.449
Cites / Doc. (2 years)20010.692
Cites / Doc. (2 years)20020.688
Cites / Doc. (2 years)20030.640
Cites / Doc. (2 years)20040.824
Cites / Doc. (2 years)20050.625
Cites / Doc. (2 years)20060.880
Cites / Doc. (2 years)20070.968
Cites / Doc. (2 years)20080.756
Cites / Doc. (2 years)20090.711
Cites / Doc. (2 years)20101.234
Cites / Doc. (2 years)20111.340
Cites / Doc. (2 years)20121.394
Cites / Doc. (2 years)20131.137
Cites / Doc. (2 years)20141.204
Cites / Doc. (2 years)20151.342
Cites / Doc. (2 years)20161.093
Cites / Doc. (2 years)20171.574
Cites / Doc. (2 years)20181.159
Cites / Doc. (2 years)20191.008
Cites / Doc. (2 years)20201.507
Cites / Doc. (2 years)20212.016
Cites / Doc. (2 years)20221.724
Cites / Doc. (2 years)20231.215

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years. Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

CitesYearValue
Self Cites199910
Self Cites200017
Self Cites200135
Self Cites200236
Self Cites200330
Self Cites200449
Self Cites200517
Self Cites200622
Self Cites200723
Self Cites200820
Self Cites200927
Self Cites201043
Self Cites201126
Self Cites201244
Self Cites201332
Self Cites201432
Self Cites201556
Self Cites201640
Self Cites201739
Self Cites201854
Self Cites201925
Self Cites202038
Self Cites202132
Self Cites202211
Self Cites202312
Total Cites199969
Total Cites200063
Total Cites200195
Total Cites2002104
Total Cites2003121
Total Cites2004118
Total Cites2005100
Total Cites2006128
Total Cites2007165
Total Cites2008128
Total Cites2009103
Total Cites2010166
Total Cites2011205
Total Cites2012257
Total Cites2013206
Total Cites2014181
Total Cites2015225
Total Cites2016243
Total Cites2017296
Total Cites2018267
Total Cites2019208
Total Cites2020292
Total Cites2021370
Total Cites2022315
Total Cites2023220

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

CitesYearValue
External Cites per document19990.584
External Cites per document20000.418
External Cites per document20010.492
External Cites per document20020.476
External Cites per document20030.632
External Cites per document20040.483
External Cites per document20050.610
External Cites per document20060.785
External Cites per document20071.014
External Cites per document20080.788
External Cites per document20090.580
External Cites per document20100.904
External Cites per document20111.218
External Cites per document20121.357
External Cites per document20131.123
External Cites per document20140.937
External Cites per document20151.024
External Cites per document20161.030
External Cites per document20171.332
External Cites per document20181.087
External Cites per document20190.989
External Cites per document20201.296
External Cites per document20211.742
External Cites per document20221.877
External Cites per document20231.691
Cites per document19990.683
Cites per document20000.573
Cites per document20010.779
Cites per document20020.727
Cites per document20030.840
Cites per document20040.825
Cites per document20050.735
Cites per document20060.948
Cites per document20071.179
Cites per document20080.934
Cites per document20090.786
Cites per document20101.221
Cites per document20111.395
Cites per document20121.637
Cites per document20131.329
Cites per document20141.138
Cites per document20151.364
Cites per document20161.234
Cites per document20171.534
Cites per document20181.362
Cites per document20191.124
Cites per document20201.490
Cites per document20211.907
Cites per document20221.944
Cites per document20231.789

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
199914.89
200022.73
200121.15
20024.17
20036.98
200411.11
200519.15
200612.50
200719.05
20089.76
20095.66
201013.21
201113.73
201221.57
201319.30
201414.04
201521.69
201616.98
201725.00
201829.17
201918.75
202012.07
202115.00
202220.00
202312.50

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

DocumentsYearValue
Non-citable documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20030
Non-citable documents20040
Non-citable documents20050
Non-citable documents20060
Non-citable documents20070
Non-citable documents20080
Non-citable documents20090
Non-citable documents20100
Non-citable documents20110
Non-citable documents20120
Non-citable documents20130
Non-citable documents20140
Non-citable documents20150
Non-citable documents20160
Non-citable documents20170
Non-citable documents20180
Non-citable documents20191
Non-citable documents20204
Non-citable documents20214
Non-citable documents20223
Non-citable documents20230
Citable documents1999101
Citable documents2000110
Citable documents2001122
Citable documents2002143
Citable documents2003144
Citable documents2004143
Citable documents2005136
Citable documents2006135
Citable documents2007140
Citable documents2008137
Citable documents2009131
Citable documents2010136
Citable documents2011147
Citable documents2012157
Citable documents2013155
Citable documents2014159
Citable documents2015165
Citable documents2016197
Citable documents2017193
Citable documents2018196
Citable documents2019184
Citable documents2020192
Citable documents2021190
Citable documents2022159
Citable documents2023123

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

DocumentsYearValue
Uncited documents199960
Uncited documents200067
Uncited documents200170
Uncited documents200276
Uncited documents200376
Uncited documents200475
Uncited documents200579
Uncited documents200674
Uncited documents200766
Uncited documents200881
Uncited documents200970
Uncited documents201055
Uncited documents201154
Uncited documents201269
Uncited documents201376
Uncited documents201474
Uncited documents201574
Uncited documents201690
Uncited documents201764
Uncited documents201877
Uncited documents201972
Uncited documents202078
Uncited documents202160
Uncited documents202261
Uncited documents202337
Cited documents199941
Cited documents200043
Cited documents200152
Cited documents200267
Cited documents200368
Cited documents200468
Cited documents200557
Cited documents200661
Cited documents200774
Cited documents200856
Cited documents200961
Cited documents201081
Cited documents201193
Cited documents201288
Cited documents201379
Cited documents201485
Cited documents201591
Cited documents2016107
Cited documents2017129
Cited documents2018119
Cited documents2019113
Cited documents2020118
Cited documents2021134
Cited documents2022101
Cited documents202386

Evolution of the percentage of female authors.

YearFemale Percent
199928.13
200021.90
200128.16
200224.78
200326.47
200423.42
200524.11
200624.39
200730.83
200823.85
200924.20
201024.64
201128.48
201233.95
201333.13
201432.14
201533.07
201630.00
201731.74
201839.30
201936.65
202034.84
202130.30
202231.30
202330.15

Evolution of the number of documents cited by public policy documents according to Overton database.

DocumentsYearValue
Overton199911
Overton20002
Overton20011
Overton20021
Overton20030
Overton20040
Overton20051
Overton20060
Overton20070
Overton20086
Overton200911
Overton201010
Overton20113
Overton20128
Overton201312
Overton201410
Overton201515
Overton20168
Overton20177
Overton20188
Overton20197
Overton20204
Overton20210
Overton20220
Overton20231

Evoution of the number of documents related to Sustainable Development Goals defined by United Nations. Available from 2018 onwards.

DocumentsYearValue
SDG201821
SDG201922
SDG202016
SDG202113
SDG20228
SDG202313

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American Journal of Potato Research

American Journal of Potato Research

American Journal of Potato Research is the Official Journal of the  Potato Association of America  (PAA). The PAA was formed in 1913 by a handful of dedicated individuals from Maine, New York, Colorado and Washington D.C. Members are primarily from the United States, Canada, Mexico, and Latin America, but another 50 countries throughout the world are represented in the membership.

  • EAPR Members have online access to Potato Research ( use the EAPR member login page )
  • Editor-in-Chief: John Bamberg
  • ISSN: 1099-209X (print version)
  • Journal no. 12230
  • Springer New York

EAPR Sustaining Members

american journal of potato research

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American Journal of Potato Research

Journal Abbreviation: AM J POTATO RES Journal ISSN: 1099-209X

About American Journal of Potato Research

Year Impact Factor (IF) Total Articles Total Cites
2023 (2024 update) 1.2 - -
2022 1.5 - 1753
2021 2.230 - 1848
2020 1.697 58 1809
2019 0.858 59 1285
2018 1.095 73 1303
2017 1.156 61 1159
2016 0.944 55 1046
2015 1.159 73 937
2014 1.204 69 943
2013 0.951 57 781
2012 1.086 51 719
2011 1.234 52 657
2010 1.222 53 610

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Journal Impact

Reference management. Clean and simple.

How to format your references using the American Journal of Potato Research citation style

This is a short guide how to format citations and the bibliography in a manuscript for American Journal of Potato Research . For a complete guide how to prepare your manuscript refer to the journal's instructions to authors .

  • Using reference management software

Typically you don't format your citations and bibliography by hand. The easiest way is to use a reference manager:

The citation style is built in and you can choose it in Settings > Citation Style or Paperpile > Citation Style in Google Docs.
Find the style here:
, and othersThe style is either built in or you can download a that is supported by most references management programs.
BibTeX syles are usually part of a LaTeX template. Check the if the publisher offers a LaTeX template for this journal.
  • Journal articles

Those examples are references to articles in scholarly journals and how they are supposed to appear in your bibliography.

Not all journals organize their published articles in volumes and issues, so these fields are optional. Some electronic journals do not provide a page range, but instead list an article identifier. In a case like this it's safe to use the article identifier instead of the page range.

  • Books and book chapters

Here are examples of references for authored and edited books as well as book chapters.

Sometimes references to web sites should appear directly in the text rather than in the bibliography. Refer to the Instructions to authors for American Journal of Potato Research .

This example shows the general structure used for government reports, technical reports, and scientific reports. If you can't locate the report number then it might be better to cite the report as a book. For reports it is usually not individual people that are credited as authors, but a governmental department or agency like "U. S. Food and Drug Administration" or "National Cancer Institute".

  • Theses and dissertations

Theses including Ph.D. dissertations, Master's theses or Bachelor theses follow the basic format outlined below.

  • News paper articles

Unlike scholarly journals, news papers do not usually have a volume and issue number. Instead, the full date and page number is required for a correct reference.

  • In-text citations

References should be cited in the text by name and year in parentheses :

Here are examples of in-text citations with multiple authors:

  • Two authors: (Ptashne and Gann 2003)
  • Three or more authors: (Yoo et al. 2014)
  • About the journal
Full journal titleAmerican Journal of Potato Research
AbbreviationAm. J. Potato Res.
ISSN (print)1099-209X
ISSN (online)1874-9380
ScopePlant Science
  • Other styles
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  • Journal of Hand and Microsurgery
  • European Sport Management Quarterly

WEBSITE-HEADER-child

The Potato Association of America (PAA) was formed in 1913 by a handful of dedicated individuals from Maine, New York, Colorado and Washington D.C. Members are primarily from the United States, Canada, Mexico, and Latin America, but another 30 countries throughout the world are represented in the membership.

The PAA has as a paramount objective the collection and dissemination of the best available technical and practical information relating to all aspects of potato production, biology, and utilization.

The PAA serves as the official professional society for those involved in potato research, extension, production, and utilization. The Association provides opportunities to contribute in one or more of six sections: Breeding & Genetics, Certification, Extension, Production & Management, Plant Protection, Physiology, and Utilization & Marketing.

Membership includes electronic access to all AJPR publications, reduced registration rates and voting rights at the annual meeting along with e-access to the European Association of Potato Research.

LIFETIME MEMBERS

PAA annually recognizes outstanding contributions to the potato industry and our organization each by awarding deserving individuals Honorary Life Membership. This award is presented at the annual meeting and is considered by many attendees the highlight of the banquet.

2025 AN NUAL MEETING

109th Annual Meeting will be taking place in Madison, WI from July 27th -31st.

THE AMERICAN JOURNAL OF POTATO RESEARCH

The American Journal of Potato Research (AJPR) is a premier outlet for reporting of scientific advances on the potato. The AJPR is recognized internationally by contributors and readers.

Better Potatoes for a Better World

PAALOGO

The Potato Association of America 37637 Five Mile Rd., # 399 Livonia, MI  48154 Phone: (734) 239-8022 E-mail:  [email protected]

Thank You to Our Sustaining Members!

american journal of potato research

© 2023 Potato Association of America

American Journal of Potato Research

Number of papers164
H4-Index
TQCC
Average citations2.463
Median citations
Impact Factor1.200 (based on 2023)

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Impact Factor : 1.200 (based on Web of Science 2023)

  • # 34 / 78 (Q2) in Agronomy

Altmetric Attention Score: 10

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SciTechDaily

Unearthing History: Ancient Potatoes Reveal Indigenous Agricultural Genius

Tubers in Basket

Research confirms the Four Corners potato was historically cultivated by Indigenous groups in the Southwest, showing advanced agricultural techniques and the potato’s role in trade networks, significantly impacting plant diversity.

A study reveals that a native potato species , Solanum jamesii, was historically transported and cultivated by Indigenous peoples across the Southwestern U.S., contributing to the region’s agricultural heritage. This ‘lost sister’ crop, rich in nutrients and capable of producing hundreds of tubers rapidly, played a crucial role in ancient trade networks and winter diets.

New research led by Red Butte Garden and the Natural History Museum of Utah (NHMU) at the University of Utah reveals that ancient Indigenous people brought a native potato species to southern Utah, expanding the list of plant species domesticated by pre-contact cultures in the Southwestern U.S.

The researchers used genetic analysis to determine how and where tubers of the Four Corners potato ( Solanum jamesii ) had been collected, transported, and traded throughout the Colorado Plateau. The findings, recently detailed in the American Journal of Botany , indicate that the tuber is a “lost sister,” joining maize, beans, and squash—commonly known as the three sisters—as a staple of crops successfully cultivated across the region’s challenging terrains.

Four Corners Potato

Insights on Early Domestication

“Transport is one of the early crucial steps in the domestication of native plants into crops,” said Dr. Lisbeth Louderback, curator of archaeology for NHMU, associate professor of anthropology at the University of Utah, and co-author of the study. “Domestication can begin with people gathering and replanting propagules in a new location.”

The researchers collected DNA samples from modern Four Corners potato populations near archaeological sites and from non-archaeological populations within the potato’s natural range in the Mogollon Rim of central Arizona and New Mexico. The findings indicate that the potato was transported and cultivated, likely by the ancestors of modern Pueblo (Hopi, Zuni, Tewa, Zia), Diné, Southern Paiute, and Apache tribes.

Alastair Lee Bitsóí

Nutritional and Cultural Significance

“The Four Corners potato, along with maize, cacao, and agave, reflects the significant influence of humans on plant diversity in the landscape over millennia,” said Dr. Bruce Pavlik, former director of conservation at Red Butte Garden and lead author of the study.

S. jamesii has twice the protein, calcium, magnesium, and iron content as an organic red potato, and a single tuber can grow to yield up to 600 small tubers in just four months. The nutritious crop would have been a highly valued trade item and crucial in the lean winter months. While the unique distribution of the Four Corners potato came as a surprise to scientists and researchers, local Tribal members suspected this all along.

Map of Potato Population Ancestry

“The Southwest was an important, overlooked secondary region of domestication. Ancient Indigenous People were highly knowledgeable agriculturalists tuned into their regional ecological environs who traded extensively and grew the plants in many different environments,” said Wendy Hodgson, herbarium curator and research botanist at the Desert Botanical Garden. “Such studies highlight the need to learn from Indigenous Peoples’ perspectives, ethnographic reports, and to view landscapes and some plant species from a cultural, rather than ‘natural’, perspective.”

Genetic Diversity and Plant Distribution

The Mogollon Rim region encompasses southcentral Arizona, extending east and north into the Mogollon Mountains of New Mexico. Jagged limestone and sandstone cliffs break up the ponderosas, pinyons, and junipers scattered across the high-altitude terrain. S. jamesii is widely distributed across the Rim—the plants thrive in conifer woodlands, and thousands of small tubers can grow beneath a single pinyon pine canopy. These “non-archaeological” populations lack an association with artifacts, grow to be quite large, and are continuously distributed across the habitat.

In contrast, “archaeological populations” of the potato occur within 300 meters of ancient habitation sites and tend to be smaller than in the species’ central distribution. The sparse, isolated populations across the Colorado Plateau exhibit a genetic makeup only explained by human gathering and transport.

“Tribes of the Four Corners region have nurtured a connection to food and landscape biodiversity since time immemorial,” said Alastair Lee Bitsóí (Diné), a Navajo journalist who grows and reports on the Four Corners potato. “I’ve grown spuds from Bears Ears, Grand Staircase and Mesa Verde region at my family’s farm in the Navajo Nation, and from them a new generation has been born. Like the ancestors, I am a dispersal agent for its transport and cultivation.”

To reproduce sexually-that is, to create viable seeds—flowers must receive pollen from a different plant with specific, compatible genetic factors. Without the right companion, plants will clone themselves by sprouting from underground stems to create a genetically identical daughter plant. Its cloning capability allows S. jamesii to persist even when conditions are far from ideal. It also provides a genetic stamp marking where each population originated. This signature is common in potatoes carried to locations with few other individuals and persists for hundreds of generations.

Archaeological Correlations and Genetic Diversity

Researchers collected DNA samples from 682 individual plants across 25 populations of the Four Corner potato—14 populations were near archaeological sites, while 11 were from non-archaeological areas in its natural distribution. The results showed that the most genetically diverse populations of S. jamesii were concentrated around the Mogollon Rim. Conversely, populations from archaeological sites exhibited reduced genetic diversity because the transported tubers may have only contained a fraction of the available genes.

The authors found that populations of S. jamesii in Escalante Valley in Southern Utah have two different origins—one directly from the Mogollon Rim region and one related to Bears Ears, Mesa Verde, and El Morro. These archaeological sites form a genetic corridor suggesting ancient people transported the tubers south to north.

Despite being close geographically, four archaeological populations around Escalante Valley show distinct origins. The genetic signatures could indicate that people transported potatoes to new locations multiple times in the distant past in a pattern likely corresponding to ancient trade routes.

“The potato joins a large assemblage of goods that were traded across this vast cultural landscape,” said Louderback. “For millennia, people of the southwest participated in social networks, migration and trade routes in the region.”

Conclusion and Future Research Directions

What is clear is that the species has been transported and grown far from its center of natural distribution. Scientists from the USDA Potato Gene Bank have been sampling the genetics of the Four Corners potato for decades and were intrigued by the diversity of genetic patterns along the geographic range.

“We used to wonder about the patterns of genetic diversity distribution of Solanum jamesii ,” said Dr. Alfonso del Rio, plant geneticist at the University of Wisconsin-Madison and the U.S. Department of Agriculture Potato Genebank and coauthor of the study. “It wasn’t clear to us that humans had altered its range, but now we have evidence confirming just that.”

The researchers interpret the transport of the Four Corners potato as early stages of domestication, however, they plan to analyze specific gene sequences to learn more about S. jamesii .

“We’d like to look at specific genetic markers for certain desirable traits such as taste, tuber size and frost tolerance,” said Pavlik. “It’s entirely possible that Indigenous people were preferring certain traits and thus trying to encourage favorable genes.”

Hodgson said: “Agave, the Four Corners potato, and other domesticated species are excellent candidates for arid land cultivation at a time when we are faced with many challenges including food security and water resource availability. As illustrated in this and other studies, protecting and understanding the distribution, and ecological and cultural roles of these plants require interdisciplinary collaboration between botanists, archaeologists, federal agencies and Indigenous Peoples.”

Reference: “Evidence for human-caused founder effect in populations of Solanum jamesii at archaeological sites: II. Genetic sequencing establishes ancient transport across the Southwest USA” by Bruce M. Pavlik, Alfonso del Rio, John Bamberg and Lisbeth A. Louderback, 11 July 2024, American Journal of Botany . DOI: 10.1002/ajb2.16365

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Kamala Harris leans into her Indian, Black heritage to energize voters

american journal of potato research

During this election year, Nalini Rau had been praying to the Hindu mother Goddess Devi for leaders who look out for everyone.

“For women, for minorities, for everyone,” said Rau, who moved from India in the 1980s and now teaches Indian classical dance in New York.

But even as she volunteered to register new voters, she wasn't feeling very optimistic about the presidential race until Kamala Harris , whose middle name is Devi, became a candidate.

Vice President Harris, the daughter of an Indian immigrant mother and a Jamaican immigrant father, has leaned into that heritage to help energize voters.

Harris will need to assemble a broad coalition to win in November, including a substantial percentage of independent and unaffiliated white voters in the suburbs of battleground states, said Laura Tamman, an assistant professor of Political Science at New York's Pace University.

After all, Harris will be facing off against former President Donald Trump , the Republican nominee. Trump received 55% of the white vote in 2020.

“She doesn’t have to win a majority of white voters, but she must come pretty close to President Joe Biden’s success in winning 43% of white voters in 2020,” Tamman said.

Harris is making strategic decisions to appeal to this broad group, including white voters, she said. "You see this in her choice of (Minnesota Gov.) Tim Walz as a running mate, but also in the issues she is focusing on and the places where she is traveling to hold campaign events," Tamman said.

With reproductive issues on the ballot in many states and abortion driving many women to the polls, Shekar Narasimhan, founder of the AAPI Victory Fund, thinks even more white women will vote this fall than in 2020.

He may be right.

More than 164,000 women met on Zoom to build support among white women for Harris’ campaign. There were so many participants that the platform crashed several times, according to published reports . The meeting, featuring singer P!nk and the actor Connie Britton, among others, raised $8.5 million.

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But people of color, and perhaps especially Asian Americans, will also be key, Narasimhan said.

Asian Americans have been the fastest-growing group of eligible voters in the United States over roughly the  past two decades . Their number has grown by 15%, or about 2 million eligible voters in just the past four years. That’s faster than the 3% growth rate for all eligible voters during that timeframe, according to Pew Research.

Still, voter registration among Asian Americans and Pacific Islanders has been 10% below the national average .

In battleground states such as Arizona, Georgia, Nevada, North Carolina and Pennsylvania, the number of Asian Americans who cast their ballot in 2020 exceeded the presidential margin of victory, according to AAPI Data.

Turning them out this year could put Harris in the White House, Narasimhan said.

For Rau, Hindu symbolism is already on Harris' side.

Trump's running mate JD Vance has mocked Harris as a childless cat lady (though she actually has two stepchildren). In many of the stories about Hindu mythology, a Devi vanquishes an egotistical opponent. Often, she’s riding a lion or a tiger ‒ in other words, a big cat, Rau said, chuckling at the parallels.

“It’s tremendous justice that a powerful woman who's bright, who's intelligent, who's together, who's confident, who knows right from wrong and who is multicultural would be taking him on,” Rau said.

Can she be both Black and Indian?

Although Trump, speaking to a group of Black journalists, recently questioned how Harris could be both Black and Asian , more than 10% of the U.S. population now identifies as multiracial.

MR Rangaswami is a father of two biracial children. He’s an Indian immigrant married to a Greek American. He says he was puzzled by Trump’s comment , which implied that Harris was identifying as Black for votes.

Being biracial is “a major strength,” he said. “You have to navigate two cultures and dual identities. When my children are with their Greek relatives, they relate to that side of it and when they are with my Indian relatives, they feel Indian.  They are both. It’s fluid and nuanced.”

In fact, Harris has always embraced both sides of her heritage.

She grew up singing in a Black church choir and joined a Black sorority at her historically Black college, Howard University.

More than 44,000 Black women joined a call in support of Harris the night she announced her candidacy and helped raise more than $1.5 million.

A similar virtual call, South Asian Women for Harris, launched by actresses Mindy Kaling and Poorna Jagannathan, both of Indian descent, was attended by 9,000 women and raised $250,000.

While a California senator and briefly a presidential candidate four years ago, Kaling invited Harris into her kitchen to make dosa, south Indian lentil and rice crepes. Harris talked about growing up eating yogurt rice, “lots of idli,” potato curry and dal ‒ the ultimate South Indian comfort food staples.

When Harris married Doug Emhoff in 2014, she placed a flower garland around his neck and had a mangalasutra, a sacred thread worn by Hindu brides, around hers. Both were nods to her Indian heritage. The ceremony, at a courthouse in Santa Barbara, ended with the breaking of a glass, marking his Jewish roots. (Coincidently, Harris will be the featured keynote speaker and close out the Democratic National Convention in Chicago on Aug. 22, on their 10th wedding anniversary).

The most effective communicators and leaders fully embrace their own life story and connect it to a larger story, in this case, the story of America, said Terry Szuplat , a former Obama speechwriter and the author of "Say It Well," a forthcoming book on public speaking.

History ‒ including Barack Obama ' s two elections ‒ shows that voters want leaders who are proud of who they are, where they come from, and the life experiences that have made them who they are, he said.

In this sense, Harris’ heritage is part of what makes her such a compelling leader to so many Americans.

“Her family’s story embodies America at our best ‒ a unique place in the world that truly welcomes all people into a diverse, inclusive democracy,” Szuplat said.

The more she shares her inspiring life story, the more people will see her journey as a reflection of their own.

“The kind of deep, emotional connection that leads people to volunteer and donate and knock on doors, which, in a close election, can make all the difference,” he said.

Daigre Thomas, who migrated from Jamaica 20 years, says she felt an instant connection to Harris.

“I know she loves music because she’s always dancing, always smiling,” Thomas said. “Jamaican people are happy people. No matter what we are going through, we probably laugh it off.”

Harris’ intersectionality also appeals to Hermian Charles who moved to the U.S. from Grenada at age 21 to attend Baruch College in New York City.

Seeing the daughter of a fellow Caribbean islander’s meteoric ascent has made her proud.

“I am so excited for the history making possibility of the first female president and that the first woman of color as president could be of Caribbean heritage,” she said.

As a Black mother of a 20-year-old daughter, she said representation was important to her.

“It’s going to make such a huge difference for people of color to have seen first Barack Obama and now have Kamala as president of the United States,” Charles said. “The ancestors are smiling.”

Does party still matter?

A growing number of Asian Americans now identify as independent ‒ 31% compared to 25% in 2020 ‒ according to the 2024 Asian American Voter Survey, conducted in partnership with AAPI Data.

That presents an opportunity for outreach to communities that have typically not been courted, said Narasimhan.

Thomas said she was "undecided" on whether she'd vote this election until Harris was nominated. But now, "I'm ready to vote," she said.

She believes Harris is well equipped to understand what wealth disparity means and how it can affect a country.

"In Jamaica, we have the poor side and the wealthy side," she said. "So I think she's exposed to all of that. We don't have to explain it to her because she understands."

Rau, for her part, believes the fact that two Hindu festivals, one dedicated to the goddesses Lakshmi, Saraswati and Durga, called Navaratri, and other, Diwali, falling just before the election is another good sign.

“They both mark the victory of good over evil,” she said.

Swapna Venugopal Ramaswamy is a White House correspondent for USA TODAY.   You can follow her on X, formerly Twitter, @SwapnaVenugopal

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    A peer-reviewed journal that publishes original research, review papers, and short communications on potato science, Solanum spp. The journal is affiliated with the Potato Association of America and offers open access articles and funding opportunities.

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