TY - JA AU - Vikram,P. AU - Mallikarjuna Swamy,B.P. AU - Dixit,S. AU - Trinidad,J. AU - Sta Cruz,T. AU - Maturan,P.C. AU - Amante,M. AU - Arvind Kumar TI - Linkages and interactions analysis of major effect drought grain yield QTLs in rice PY - 2016/// CY - San Francisco, USA : PB - Public Library of Science KW - Quantitative Trait Loci KW - AGROVOC KW - Rice KW - Abiotic stress KW - Chromosome mapping KW - Drought tolerance KW - Spermatophyta N1 - Open Access; Peer review N2 - Quantitative trait loci conferring high grain yield under drought in rice are important genomic resources for climate resilient breeding. Major and consistent drought grain yield QTLs usually co-locate with flowering and/or plant height QTLs, which could be due to either linkage or pleiotropy. Five mapping populations used for the identification of major and consistent drought grain yield QTLs underwent multiple-trait, multiple-interval mapping test (MT-MIM) to estimate the significance of pleiotropy effects. Results indicated towards possible linkages between the drought grain yield QTLs with co-locating flowering and/or plant height QTLs. Linkages of days to flowering and plant height were eliminated through a markerassisted breeding approach. Drought grain yield QTLs also showed interaction effects with flowering QTLs. Drought responsiveness of the flowering locus on chromosome 3 (qDTY3.2) has been revealed through allelic analysis. Considering linkage and interaction effects associated with drought QTLs, a comprehensive marker-assisted breeding strategy was followed to develop rice genotypes with improved grain yield under drought stress UR - http://hdl.handle.net/10883/18143 T2 - PLoS One DO - https://doi.org/10.1371/journal.pone.0151532 ER -