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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #419212
Research Project: Characterization and Introgression of Nematode Resistance into Upland Cotton

Location: Crop Genetics Research

Title: Evaluating reniform nematode management practices with reniform-resistant cotton cultivars and breeding lines containing USDA germplasm

Author
item CORSER, JONATHAN - Mississippi State University
item ALLEN, THOMAS - Mississippi State University
item TRIPATHI, SUBINA - Mississippi State University
item TADLOCK, NICHOLAS - Mississippi State University
item WILKERSON, TESSIE - Mississippi State University
item Stetina, Salliana - Sally
item McCarty, Jack

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: 11/6/2023
Publication Date: 4/18/2024
Citation: Corser, J.K., Allen, T.W., Tripathi, S., Tadlock, N., Wilkerson, T.H., Stetina, S.R., McCarty Jr, J.C. 2024. Evaluating reniform nematode management practices with reniform-resistant cotton cultivars and breeding lines containing USDA germplasm. National Cotton Council Beltwide Cotton Conference. 1:84-86.

Interpretive Summary:

Technical Abstract: In Mississippi, cotton yield can be severely reduced in situations where soil populations of reniform nematode, Rotylenchulus reniformis, exceed economic thresholds (= 1,000/pint of soil in spring and = 5,000/pint of soil post-harvest). Resistant cultivars provide management options in fields with historically high populations of reniform nematodes. The specific objective of this trial was to determine the benefits of cultivars, with tolerance to the reniform nematode, for reniform nematode management. Field trials were established during 2022 and included reniform-resistant cotton germplasm compared to commercial resistant cultivars and a susceptible commercial standard. Soil was sampled at three different timings during the season to confirm treatment efficacy in managing the nematode. In most years reniform populations increased during the season, and were consistently above threshold at harvest sampling regardless of treatment combination. Across years, numerically, up to an 8% average increase in seed cotton was observed reniform tolerant cotton lines/cultivars when compared to the commercial susceptible checks. Reniform nematode-resistant cultivars provide a management option to reduce the losses due to the reniform nematode.