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ARS Home » Plains Area » Lubbock, Texas » Cropping Systems Research Laboratory » Plant Stress and Germplasm Development Research » Research » Research Project #436615

Research Project: Continuing Efforts of Maintaining Fusarium Wilt Race 4 (FOV4) Resistance/Tolerance of Cotton Germplasm for California Through Genetics and Breeding

Location: Plant Stress and Germplasm Development Research

Project Number: 3096-21000-022-25-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Apr 1, 2019
End Date: Dec 31, 2019

Assist in progeny development, breeding and coordination of seed increases of selected breeding lines for Upland cotton germplasm release with improved resistance to fusarium wilt race 4 (FOV4) resistance/tolerance

USDA-ARS continues to support the FOV4 genetic/breeding effort in the San Joaquin Valley of California. Funding from this project will allow us to partially devote additional resources and staff-support located at USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research Unit (PSGDRU), Lubbock, TX. The funds will provide support for traveling to California at least four times a year to work and coordinate the FOV4 breeding research efforts with the California group. Traditional breeding and molecular methods will be used to introgress, select, and develop breeding lines and germplasm resistant to Fusarium wilt race 4 (FOV4). New developed progeny or breeding lines will target introgression of FOV4 resistance/tolerance genes from known sources of reported resistance such as Gossypium barbadense L. - Pima-S6, selected developed progeny, and selected introduction/accessions from the USDA-ARS Cotton Germplasm Collection. Also, entries of interest identified from ongoing screening and selection efforts at the USDA-ARS, PSGDRU in Lubbock, TX and/or other germplasm sources will be evaluated as appropriate for FOV resistance. To Evaluate for FOV4 resistance/tolerance, responses from field test-evaluations will be examined using plant survival, foliar, and vascular staining of roots and analysis of variance or nonparametric statistical analyses as appropriate. Activities involved in this project include progeny-germplasm development, identification, selection, seed increase, and protocol/method development for pathogen-infection evaluations and cotton genetics/breeding in collaboration with University cooperators.