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ARS Home » Research » Publications at this Location » Publication #128266
Title: SOYBEAN QTL MAPPING OF AGRONOMIC AND SEED QUALITY TRAITS IN AN 'ESSEX X 'WILLIAMS' RIL POPULATION.

Author
item HYTEN, DAVID - UNIV. OF TENNESSEE
item PANTALONE, V - UNIV. OF TENNESSEE
item SAMS, C - UNIV. OF TENNESSEE
item SAXTON, A - UNIV. OF TENNESSEE
item SCHMIDT, M - SOUTHERN ILLINOIS UNIV.
item Cregan, Perry

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 10/22/2001
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Quatitative Trait Loci (QTL) in agronomic crops contribute to the majority of important traits. Finding the genetic basis for these traits is an area of great interest to many researchers. A recombinant inbred population containing 131 lines was created from a cross between the soybean cultivars 'Essex' and 'Williams' which are found in the parentage of many current elite line cultivars. Soybean traits such as yield, seed protein content, seed oil content, and other agronomic traits were measured for one year at multiple locations. Simple sequence repeat (SSR) markers were used to map 131 F6:8 lines to create a molecular linkage map of the 20 consensus molecular linkage groups. Using QTL Cartographer (2001) SSR markers identified the location of a number of OTLs. Major additive QTL (r2>10%) were found for almost all of the traits measured. Also, several minor additive QTL (r2<10%) for all the traits measured were found in this population. This project has confirmed existing QTL along with finding new QTL for yield, seed protein content, seed oil content, and other agronomic traits. This information can be used to help identify QTL in current elite cultivars so that new QTL from exotic germplasms can be incorporated to improve agronomic traits in soybeans.