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Discovery of QTL for root traits and water use efficiency in rice (Oryza sativa L.) and their validation - A combined approach of association analysis and linkage mapping

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Title Discovery of QTL for root traits and water use efficiency in rice (Oryza sativa L.) and their validation - A combined approach of association analysis and linkage mapping
 
Creator B. R, Raju
 
Contributor M. S, Sheshshayee
 
Subject vegetative propagation, grain, rice, yields, irrigation, developmental stages, biological phenomena, planting, genetics, weather hazards
 
Description Introgression of water mining and water use efficiency (WUE) traits on to a
single elite genetic background is needed while developing aerobic worthy rice
cultivars. Considering the complexity of inheritance of these traits, a focused
molecular breeding is a promising approach.
A set of 173 diverse indica rice accessions were phenotyped for these traits and
significant variability was noticed which was consistent across seasons, indicating a
strong genetic control. Assessment of molecular diversity using 291 SSR markers
detected a total of 2,615 alleles with an average of 8.95 allele per locus and an
average PIC value of 0.6. Population structure analysis identified six main subgroups
which corresponded to the diversity analysis derived from neighbour joining method.
Of the 108 significant marker-trait associations (MTAs) identified using mixed linear
model, 51 were highly significant (P
 
Date 2016-05-20T13:55:13Z
2016-05-20T13:55:13Z
2013-08-24
 
Type Thesis
 
Identifier Th-10606
http://krishikosh.egranth.ac.in/handle/1/66171
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru