Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

107899 Phenotyping and Genotyping of Ril Populations of Peanut for Gene Discovery and Marker Development.

Poster Number 204

See more from this Division: C01 Crop Breeding and Genetics
See more from this Session: Crop Breeding & Genetics Poster II

Tuesday, October 24, 2017
Tampa Convention Center, East Exhibit Hall

C. Corley Holbrook1, Peggy Ozias-Akins2, Ye Chu3, Thomas George Isleib4, Scott A. Jackson5, Albert K. Culbreath6, Tim Brenneman7, Charles Yiwu Chen8, Chris Butts9, Marshall Lamb10, Thomas R. Sinclair11, Barry L. Tillman12, Mark D. Burow13, Craig Kvien14, Josh Clevenger15, Baozhu Guo16, Carolina Chavarro17 and Renjie Cui6, (1)Crop Genetics and Breeding Research Unit, USDA-ARS, Tifton, GA
(2)Horticulture, University of Georgia, Tifton, GA
(3)2360 Rainwater Rd, University of Georgia, Tifton, GA
(4)North Carolina State University, Raleigh, NC
(5)Dept. of Crop & Soil Sciences, University of Georgia - Athens, Athens, GA
(6)Plant Pathology, University of Georgia, Tifton, GA
(7)UGA, Tifton, GA
(8)Auburn University, Auburn University, Auburn, AL
(9)National Peanut Research Laboratory, USDA-ARS, Dawson, GA
(10)1011 Forrester Dr SE, ARS-USDA, Dawson, GA
(11)Crop Science Department, North Carolina State University, Raleigh, NC
(12)North Florida Research and Education Center, University of Florida, Marianna, FL
(13)Texas A&M AgriLife Research, Lubbock, TX
(14)NESPAL, University of Georgia, Tifton, GA
(15)University of Georgia - Tifton, Tifton, GA
(16)Crop Protection and Management Research Unit, USDA-ARS, Tifton, GA
(17)Center for Applied Genetic Technologies, University of Georgia, Athens, GA
Abstract:
The development of molecular markers for economically significant traits should greatly improve the speed and efficiency of all peanut breeding programs. We have been genotyping and phenotyping several structured populations. SNP marker density ranges from 1000 to 2000 among five RIL populations. In addition, genetic markers for resistance to late leaf spot were validated by field trials and are being integrated into breeding programs. Phenotyping efforts have been carried out for resistance to early and late leaf spot, TSWV, white mold, and preharvest aflatoxin contamination. Phenotyping efforts have also been carried out for yield, grade, pod morphology, root traits, and drought tolerance. These efforts have resulted in the identification of numerous QTL that should be useful in MAS. Additional years of phenotyping data will be needed to improve the accuracy of genetic mapping. Construction of dense genetic maps for these populations and QTL mapping for traits of interests will yield additional markers that can be deployed by breeding programs for the development of improved cultivars.

See more from this Division: C01 Crop Breeding and Genetics
See more from this Session: Crop Breeding & Genetics Poster II