L. R. Joppa

2.2k total citations
47 papers, 1.7k citations indexed

About

L. R. Joppa is a scholar working on Plant Science, Agronomy and Crop Science and Molecular Biology. According to data from OpenAlex, L. R. Joppa has authored 47 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 47 papers in Plant Science, 9 papers in Agronomy and Crop Science and 8 papers in Molecular Biology. Recurrent topics in L. R. Joppa's work include Wheat and Barley Genetics and Pathology (40 papers), Plant Disease Resistance and Genetics (21 papers) and Chromosomal and Genetic Variations (11 papers). L. R. Joppa is often cited by papers focused on Wheat and Barley Genetics and Pathology (40 papers), Plant Disease Resistance and Genetics (21 papers) and Chromosomal and Genetic Variations (11 papers). L. R. Joppa collaborates with scholars based in United States, Canada and Australia. L. R. Joppa's co-authors include N. D. Williams, R. G. Cantrell, Gary A. Hareland, Shujun Xu, Gary E. Hart, R. W. Stack, E. M. Elias, J. Gorham, C. N. Law and R. G. Wyn Jones and has published in prestigious journals such as Theoretical and Applied Genetics, Plant Molecular Biology and Crop Science.

In The Last Decade

L. R. Joppa

46 papers receiving 1.5k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
L. R. Joppa United States 22 1.6k 351 285 253 175 47 1.7k
Harold E. Bockelman United States 21 1.1k 0.7× 373 1.1× 167 0.6× 156 0.6× 75 0.4× 56 1.1k
T. G. Fetch Canada 21 1.4k 0.9× 216 0.6× 251 0.9× 339 1.3× 220 1.3× 83 1.4k
B. W. Diers United States 18 1.8k 1.1× 300 0.9× 156 0.5× 245 1.0× 72 0.4× 30 1.8k
Gunter Backes Denmark 21 1.1k 0.7× 428 1.2× 123 0.4× 146 0.6× 55 0.3× 46 1.2k
E.E. Saari India 9 1.6k 1.0× 198 0.6× 343 1.2× 387 1.5× 129 0.7× 19 1.7k
Zhenglong Ren China 22 1.3k 0.8× 380 1.1× 203 0.7× 378 1.5× 72 0.4× 74 1.4k
Alfonso Cuesta‐Marcos United States 19 1.2k 0.7× 607 1.7× 186 0.7× 215 0.8× 42 0.2× 37 1.3k
W. R. Coffman United States 11 1.2k 0.7× 591 1.7× 57 0.2× 292 1.2× 35 0.2× 23 1.3k
I. Karsaï Hungary 22 1.7k 1.0× 530 1.5× 557 2.0× 270 1.1× 54 0.3× 88 1.8k
S. K. St. Martin United States 17 1.1k 0.7× 109 0.3× 96 0.3× 110 0.4× 78 0.4× 81 1.1k

Countries citing papers authored by L. R. Joppa

Since Specialization
Citations

This map shows the geographic impact of L. R. Joppa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by L. R. Joppa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites L. R. Joppa more than expected).

Fields of papers citing papers by L. R. Joppa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L. R. Joppa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by L. R. Joppa. The network helps show where L. R. Joppa may publish in the future.

Co-authorship network of co-authors of L. R. Joppa

This figure shows the co-authorship network connecting the top 25 collaborators of L. R. Joppa. A scholar is included among the top collaborators of L. R. Joppa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with L. R. Joppa. L. R. Joppa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kianian, Shahryar F., et al.. (2002). Genetic dissection of a major Fusarium head blight QTL in tetraploid wheat. Plant Molecular Biology. 48(5-6). 625–632. 98 indexed citations
2.
Stack, R. W., E. M. Elias, J. Mitchell Fetch, J. D. Miller, & L. R. Joppa. (2002). Fusarium Head Blight Reaction of Langdon Durum- Chromosome Substitution Lines. Crop Science. 42(2). 637–637. 36 indexed citations
3.
4.
Dubcovsky, Jorge, Mercedes Echaide, Sandra Giancola, et al.. (1997). Seed-storage-protein loci in RFLP maps of diploid, tetraploid, and hexaploid wheat. Theoretical and Applied Genetics. 95(7). 1169–1180. 58 indexed citations
5.
Joppa, L. R., Eviatar Nevo, & Avigdor Beiles. (1995). Chromosome translocations in wild populations of tetraploid emmer wheat in Israel and Turkey. Theoretical and Applied Genetics. 91(5). 713–719. 13 indexed citations
6.
Riede, Carlos Roberto, N. D. Williams, J. D. Miller, & L. R. Joppa. (1995). Chromosomal location of genes for stem rust resistance derived from ‘Waldron’ wheat. Theoretical and Applied Genetics. 90(7-8). 1158–1163. 3 indexed citations
7.
Xu, Shujun & L. R. Joppa. (1995). Mechanisms and inheritance of first division restitution in hybrids of wheat, rye, and Aegilops squarrosa. Genome. 38(3). 607–615. 55 indexed citations
8.
Joppa, L. R. & R. G. Cantrell. (1990). Chromosomal Location of Genes for Grain Protein Content of Wild Tetraploid Wheat. Crop Science. 30(5). 1059–1064. 134 indexed citations
9.
Gorham, J., C Hardy, R. G. Wyn Jones, L. R. Joppa, & C. N. Law. (1987). Chromosomal location of a K/Na discrimination character in the D genome of wheat. Theoretical and Applied Genetics. 74(5). 584–588. 168 indexed citations
10.
Cros, D. L. du, L. R. Joppa, & C.W. Wrigley. (1983). Two-dimensional analysis of gliadin proteins associated with quality in durum wheat: chromosomal location of genes for their synthesis. Theoretical and Applied Genetics. 66-66(3-4). 297–302. 21 indexed citations
11.
Joppa, L. R., Khalil Khan, & N. D. Williams. (1983). Chromosomal location of genes for gliadin polypeptides in durum wheat Triticum turgidum L.. Theoretical and Applied Genetics. 64(4). 289–293. 38 indexed citations
12.
Joppa, L. R., et al.. (1983). Chromosomal Location of Genes for Resistance to Greenbug in ‘Largo’ and ‘Amigo’ Wheats1. Crop Science. 23(1). 91–93. 58 indexed citations
13.
Deckard, Edward L., N. D. Williams, James Hammond, & L. R. Joppa. (1982). Chromosomal Control of Nitrate Reductase Activity in Hexaploid Wheat1. Crop Science. 22(1). 85–88. 2 indexed citations
14.
15.
Joppa, L. R. & N. D. Williams. (1977). D‐Genome Substitution‐Monosomics of Durum Wheat1. Crop Science. 17(5). 772–776. 16 indexed citations
16.
Joppa, L. R., J. A. Bietz, & C. L. McDonald. (1975). DEVELOPMENT AND CHARACTERISTICS OF A DISOMIC-1D ADDITION LINE OF DURUM WHEAT. Canadian Journal of Genetics and Cytology. 17(3). 355–363. 5 indexed citations
17.
Joppa, L. R., et al.. (1974). Quality Characteristics of Tall and Semidwarf Near‐Isogenic Lines of Durum Wheat1. Crop Science. 14(3). 420–422. 3 indexed citations
18.
Joppa, L. R.. (1973). Agronomic Characteristics of Near‐Isogenic Tall and Semidwarf Lines of Durum Wheat1. Crop Science. 13(6). 743–746. 17 indexed citations
19.
Quick, J. S., et al.. (1972). Registration of D6647, D6654, D6659, and D6660 Durum Wheat Germplasm1 (Reg. Nos. GP 29 to GP 32). Crop Science. 12(5). 721–721. 3 indexed citations
20.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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