Dr. Klein's research focuses on developing the genomic tools and resources in crops to enable map base cloning of economically important genes, and to understand the underlying mechanisms that plants use to withstand biotic and abiotic stress. Dr. Klein conducts genetic studies on several plant species including sorghum, rose, and pecan. In 2012, Dr. Klein was awarded the College of Agriculture and Life Sciences Dean's Outstanding Achievement Award for excellence as a member of the Sorghum Bioenergy Breeding and Genomics Interdisciplinary Research Team.

education and training
selected publications
Academic Articles94
  • Fonseca, J., Perumal, R., Klein, P. E., Klein, R. R., & Rooney, W. L. (2022). Mega-environment analysis to assess adaptability, stability, and genomic predictions in grain sorghum hybrids. EUPHYTICA. 218(9), 128.
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  • Borrell, A. K., Wong, A., George-Jaeggli, B., van Oosterom, E. J., Mace, E. S., Godwin, I. D., ... Jordan, D. R. (2022). Genetic modification of PIN genes induces causal mechanisms of stay-green drought adaptation phenotype.. J Exp Bot. erac336.
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  • Fonseca, J., Klein, P. E., Crossa, J., Pacheco, A., Perez-Rodriguez, P., Ramasamy, P., Klein, R., & Rooney, W. L. (2021). Assessing combining abilities, genomic data, and genotype environment interactions to predict hybrid grain sorghum performance.. Plant Genome. 14(3), e20127.
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  • Fonseca, J., Perumal, R., Klein, P. E., Klein, R. R., & Rooney, W. L. (2021). Combining abilities and elite germplasm enhancement across US public sorghum breeding programs. CROP SCIENCE. 61(6), 4098-4111.
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  • Lovell, J. T., Bentley, N. B., Bhattarai, G., Jenkins, J. W., Sreedasyam, A., Alarcon, Y., ... Randall, J. J. (2021). Four chromosome scale genomes and a pan-genome annotation to accelerate pecan tree breeding.. Nat Commun. (1), 4125.
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Conference Papers3
  • Byrne, D. H., Klein, P. E., Hall, C., Windham, M., Ochoa-Corona, F. M., Olson, J., ... Pemberton, H. B. (2019). Combating Rose rosette disease US national project. VII INTERNATIONAL SYMPOSIUM ON ROSE RESEARCH AND CULTIVATION. 1232(1232), 203-212.
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  • Grauke, L. J., Klein, R., Grusak, M. A., & Klein, P. (2015). The Forest and the Trees: Applications for Molecular Markers in the Repository and Pecan Breeding Program. I INTERNATIONAL SYMPOSIUM ON PECANS AND OTHER CARYA IN INDIGENOUS AND MANAGED SYSTEMS. 1070(1070), 109-126.
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  • Harris, K., Subudhi, P. K., Borrell, A., Jordan, D., Rosenow, D., Nguyen, H., ... Mullet, J. (2007). Sorghum stay-green QTL individually reduce post-flowering drought-induced leaf senescence.. J Exp Bot. 58(2), 327-338.
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chaired theses and dissertations
First Name
Last Name
mailing address
Texas A&M University; Horticultural Sciences; 2133 TAMU
College Station, TX 77843-2133