Analysis of genomic regions for crude protein and fractions of protein using a recombinant inbred population in Rice (Oryza sativa L.)

Abstract

The improvement for grain seed storage proteins (SSPs) is integral for rice breeding to achieve superior nutritional quality. In present investigation, a sum of 44 QTLs for PC, GLU, GLO, ALB and PRO were detected on all 12 chromosomes, with single QTL explaining 3.70–12.47 % of phenotypic variation. The majority of detected QTLs located in the region of RM7158-RM3414 including Waxy (Wx) gene along with qPC1. The highly positive significant correlation showed traits under investigation are related to each other. Three QTLs (qPC6, qPC7 and qGLU6) had shown relatively higher rate of phenotypic contribution suggesting influence of environmental conditions. Whereas, a pair of epistatic QTLs, GLO and PRO were also detected meanwhile, the M-QTLs were the primary genetic basis for PC, GLU and ALB, respectively. The outcome of present study will help to unearth the genetic foundation of protein and fractions of protein for future grain nutritional quality improvement programs.

Keywords

• qtls mapping
• waxy
• marker-assisted selection
• nutritional quality