Thursday, 5 January 2006 - 1:45 PM

Usefulness Criteria for Selection of Generations for Interspecific Introgression from G. tomentosum and G. mustelinum

Brian W. Gardunia1, David Stelly1, C. Wayne Smith1, and Osman A. Gutierrez2. (1) Texas A&M University, Soil and Crop Sciences, College Station, TX 77843-2474, (2) USDA-ARS, P.O. Box 5367, Mississippi State, MS 39762

As part of a project with the purpose of introgression of beneficial traits from the wild species Gossypium tomentosum and G. mustelinum into Upland cotton, G. hirsutum., we have created a series of backcross, selfed, and random-mated populations. Determining which population is ideal for breeding is an important question for interespecific introgression. Breeding using exotic parents presents unique challenges because good alleles are often masked by negative traits that are linked or epistatic to them. These interactions make recovery and discovery of beneficial alleles difficult from these populations. We demonstrate how the fiber qualities and agronomic characteristics of each population can be used to determine its usefulness for selection and breeding.

[ Recorded presentation ] Recorded presentation

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See more of The Beltwide Cotton Conferences, January 3-6 2006