World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
52
Citations
11428
World Ranking
1887
National Ranking
497

James Kolmer publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where James Kolmer sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 254 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

James Kolmer D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where James Kolmer sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 52 D-Index — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Gene
  • Genetics
  • Genome

His primary areas of investigation include Cultivar, Agronomy, Poaceae, Seedling and Botany. His Cultivar research integrates issues from Germplasm and Molecular marker. His study ties his expertise on Plant disease resistance together with the subject of Agronomy.

James Kolmer interconnects Common wheat, Wheat leaf rust, Puccinia triticina, Gene and Fungus in the investigation of issues within Poaceae. In Seedling, James Kolmer works on issues like Resistance, which are connected to Breed and Single-nucleotide polymorphism. He has included themes like Genetic variability, Genotype and Population genetics in his Botany study.

His most cited work include:

  • Genetics of resistance to wheat leaf rust. (295 citations)
  • PCR assays for the Lr37-Yr17-Sr38 cluster of rust resistance genes and their use to develop isogenic hard red spring wheat lines (225 citations)
  • Wheat leaf rust caused by Puccinia triticina (223 citations)

What are the main themes of his work throughout his whole career to date?

James Kolmer spends much of his time researching Agronomy, Cultivar, Winter wheat, Virulence and Botany. His Agronomy research incorporates themes from Plant disease resistance and Agricultural experiment station. His work deals with themes such as Germplasm, Poaceae, Fusarium and Seedling, which intersect with Cultivar.

His Wheat leaf rust and Puccinia triticina study, which is part of a larger body of work in Virulence, is frequently linked to Veterinary medicine, bridging the gap between disciplines. His Wheat leaf rust research is classified as research in Genetics. He combines subjects such as Microsatellite, Gene and Obligate parasite with his study of Botany.

He most often published in these fields:

  • Agronomy (53.06%)
  • Cultivar (40.31%)
  • Winter wheat (26.53%)

What were the highlights of his more recent work (between 2018-2021)?

  • Agronomy (53.06%)
  • Winter wheat (26.53%)
  • Genetics (28.06%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Agronomy, Winter wheat, Genetics, Virulence and Cultivar. His work in the fields of Agronomy, such as Yield gain, intersects with other areas such as Separable space. His study of Wheat leaf rust is a part of Virulence.

His Wheat leaf rust research is multidisciplinary, incorporating elements of Haplotype and Fungus. The Cultivar study combines topics in areas such as Rust and Agricultural experiment station. Quantitative trait locus is closely connected to Plant disease resistance in his research, which is encompassed under the umbrella topic of Seedling.

Between 2018 and 2021, his most popular works were:

  • Mapping of Novel Leaf Rust and Stem Rust Resistance Genes in the Portuguese Durum Wheat Landrace PI 192051. (8 citations)
  • Multilocus Genotypes of the Wheat Leaf Rust Fungus Puccinia triticina in Worldwide Regions Indicate Past and Current Long-Distance Migration. (8 citations)
  • Virulence of Puccinia triticina, the Wheat Leaf Rust Fungus, in the United States in 2017. (7 citations)

In his most recent research, the most cited papers focused on:

  • Gene
  • Genetics
  • Genome

James Kolmer mainly investigates Virulence, Genetics, Agronomy, Wheat leaf rust and Cultivar. His research investigates the link between Virulence and topics such as Rust that cross with problems in Locus, Resistance and Transgene. Gene and Inbred strain are the subjects of his Genetics studies.

His Agronomy research focuses on Agricultural experiment station and how it relates to Grain yield and Fusarium. His study explores the link between Wheat leaf rust and topics such as Fungus that cross with problems in Loss of heterozygosity and Urediniospore. James Kolmer works mostly in the field of Stem rust, limiting it down to topics relating to Plant disease resistance and, in certain cases, Common wheat, as a part of the same area of interest.

Best Publications

  • A North American system of nomenclature for Puccinia recondita f. sp. tritici.

    D. L. Long;J. A. Kolmer

  • Genetics of resistance to wheat leaf rust.

    J. A. Kolmer

  • Wheat leaf rust caused by Puccinia triticina

    Melvin D. Bolton;James A. Kolmer;David F. Garvin

  • PCR assays for the Lr37-Yr17-Sr38 cluster of rust resistance genes and their use to develop isogenic hard red spring wheat lines

    M. Helguera;M. Helguera;I. A. Khan;J. Kolmer;D. Lijavetzky

  • Tracking wheat rust on a continental scale.

    James A Kolmer

  • Powdery mildew resistance and Lr34/Yr18 genes for durable resistance to leaf and stripe rust cosegregate at a locus on the short arm of chromosome 7D of wheat

    W. Spielmeyer;R. A. McIntosh;J. Kolmer;E. S. Lagudah

  • Analysis of the Lr34/Yr18 Rust Resistance Region in Wheat Germplasm

    James A. Kolmer;Ravi P. Singh;David F. Garvin;Libby Viccars

  • The wheat Sr50 gene reveals rich diversity at a cereal disease resistance locus.

    Rohit Mago;Peng Zhang;Sonia Vautrin;Hana Šimková

  • Effect of gene Lr34 in the enhancement of resistance to leaf rust of wheat

    S. E. German;J. A. Kolmer

  • Leaf Rust of Wheat: Pathogen Biology, Variation and Host Resistance

    James Kolmer

  • Genome Wide Association Study of Seedling and Adult Plant Leaf Rust Resistance in Elite Spring Wheat Breeding Lines.

    Liangliang Gao;M. Kathryn Turner;Shiaoman Chao;James Kolmer;James Kolmer

  • Wheat leaf and stem rust in the United States

    James Kolmer;Yue Jin;D. L. Long

  • Virulence and molecular polymorphism in Puccinia recondita f. sp. tritici in Canada

    J. A. Kolmer;J. Q. Liu;M. Sies

  • A five-transgene cassette confers broad-spectrum resistance to a fungal rust pathogen in wheat

    Ming Luo;Liqiong Xie;Soma Chakraborty;Aihua Wang

  • Lr34-mediated leaf rust resistance in wheat: transcript profiling reveals a high energetic demand supported by transient recruitment of multiple metabolic pathways.

    Melvin D. Bolton;James A. Kolmer;Wayne W. Xu;David F. Garvin

  • Postulation of leaf rust resistance genes in selected soft red winter wheats

    J. A. Kolmer

  • Physiologic Specialization of Puccinia triticina on Wheat in the United States in 2003.

    James Kolmer;D. L. Long;M. E. Hughes

  • PCR markers for Triticum speltoides leaf rust resistance gene Lr51 and their use to develop isogenic hard red spring wheat lines

    M Helguera;L Vanzetti;M Soria;I A Khan

  • Molecular characterization of durum and common wheat recombinant lines carrying leaf rust resistance (Lr19) and yellow pigment (Y) genes from Lophopyrum ponticum.

    Wenjun Zhang;Adam J. Lukaszewski;Jim Kolmer;Marcelo A. Soria

  • Association mapping of leaf rust response in durum wheat.

    Marco Maccaferri;Maria C. Sanguineti;Paola Mantovani;Andrea Demontis

  • Virulence and molecular polymorphism in international collections of the wheat leaf rust fungus Puccinia triticina

    James Kolmer;J. Q. Liu

Frequent Co-Authors

Yue Jin
Yue Jin US Department of Agriculture
Guihua Bai
Guihua Bai United States Department of Agriculture
Xianming Chen
Xianming Chen Washington State University
James A. Anderson
James A. Anderson University of Minnesota
Ming-Shun Chen
Ming-Shun Chen Kansas State University
Robert L. Bowden
Robert L. Bowden US Department of Agriculture
Scott D. Haley
Scott D. Haley Colorado State University
Frank B. Peairs
Frank B. Peairs Colorado State University
Gina Brown-Guedira
Gina Brown-Guedira North Carolina State University
Matthew N. Rouse
Matthew N. Rouse US Department of Agriculture

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