Marker-assisted selection for complex trait in common bean (Phaseolus vulgaris L.) using QTL-based index

Tar'an, B. and Michaels, T.E. and Pauls, K.P. (2003) Marker-assisted selection for complex trait in common bean (Phaseolus vulgaris L.) using QTL-based index. Euphytica, 130 (3). pp. 423-432.

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A procedure was developed for marker-assisted selection of complex traits for common bean (Phaseolus vulgarisL.) using an index based on QTL-linked markers and ultrametric genetic distances between lines and a target parent. A comparison of the mean seed yields of the top five lines selected by different schemes demonstrated that the highest yielding group was selected on the basis of a combination of phenotypic performance and a high QTL-based index,followed by groups identified by a high QTL-based-index, conventional selection,and a low QTL-based-index. This study demonstrated a simple way to use information obtained from QTL studies to make selection decisions. The study also showed that the use of the QTL-based-index in conjunction with the ultrametric genetic distance to the target parent would enablea plant breeder to select lines that retain important QTL in a desirable genetic background. Therefore, this type of MAS would be expected to be superior to the phenotypic selection.

Item Type: Article
Additional Information: SNNigam Collection
Uncontrolled Keywords: Common bean, Genetic distance, Marker-assisted selection, Quantitative trait loci
Author Affiliation: Department of Plant Agriculture, Crop Science Building, University of Guelph, Guelph, Canada.
Subjects: Crop Improvement
Divisions: Common Bean
Depositing User: Mr Arbind Seth
Date Deposited: 17 Apr 2013 08:29
Last Modified: 17 Apr 2013 08:29
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