Indian Society of Genetics & Plant Breeding

Identification of QTLs for root and shoot traits in RIL population of rice (Oryza sativa L.)

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 In present study, quantitative trait loci (QTL) analysis was
carried out using 93 SSR and 11 SNP markers in F7
recombinant inbred lines derived from a cross between
two potential indica genotypes, Danteshwari and Dagad
Deshi. Fourteen putative QTLs identified for 7 root and
shoot traits on chromosomes 1, 2, 4, 5, 6 and 8, explained
3.77%-29.24% phenotypic variance at LOD score of > 2.5.
The number of putative QTLs was 2 for each root volume,
root dry weight, shoot length, shoot fresh weight and total
plant length, 1 for root/shoot fresh weight ratio and 3 for
root/shoot dry weight ratio. Identified putative QTLs for
root and shoot traits in this study provide insight into the
mode of drought tolerance, which will accelerate the rice
molecular breeding.

Keywords: Rice, Root, Marker, RIL, QTL


Year: 2015
Volume: 75
Issue: 1
Article DOI: 10.5958/0975-6906.2015.00005.X
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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