Project Number: 3096-21000-022-11-R
Project Type: Reimbursable Cooperative Agreement
Start Date: Jan 1, 2018
End Date: Mar 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 fusarium wilt race 4 (FOV4) genetic/breeding effort in the San Joaquin Valley of California. Funding from this project will allow us to partially devote additional support (student or staff) who will be housed at USDA-ARS, PA, CSRL, Plant Stress and Germplasm Development Research Unit (PSGDRU), Lubbock, TX. The student will be traveling to California at least five time a year to work and coordinate the FOV4 breeding research efforts with the California group. Traditional breeding methods will be used to introgress, select, and develop breeding lines and germplasm resistant to FOV4. New breeding lines will target introgression of FOV4 resistance/tolerance genes from entries such as Pima-Resisitant/Tolerant sources, selected developed progeny, and selected introduction/accessions from the USDA-ARS Cotton Germplasm Collection or other breeding programs. 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 greenhouse and field test-evaluations will be examined using analysis of variance or ANOVA, or nonparametric analyses as appropriate. Field evaluations will use randomized complete block design or incomplete block designs with 3–4 replications using five plants as subsamples per replication. 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 of California cooperators.