Identification, Characterization and Mapping of QTLs related to Grain Fe, Zn and Protein Contents in Rice (Oryza sativa L.)

  • Girish Chandel Department of PMBB, COA IGKV Raipur
  • Atul B Indurkar
  • Sanjay Majgahe
  • Vikrant K Sahu
  • Ashish K Vishwakarma
  • Vinay Premi
  • Pankaj Shrivastava
  • Mahima Dubey
Keywords: Micronutrients, Protein, QTLs, Rice, SSR,

Abstract

The improvement of grain quality, such as Zn/Fe and grain protein content  has been a major concern of rice breeders. In the present study, grain zinc (Zn), iron (Fe) and protein contents were analyzed  in 60 F7 RILs derived from Swarna X Moroberekan a recombinant inbred line (RIL) population to detect quantitative trait loci (QTLs) and their interactions. Using 20 polymorphic SSR markers showed 4 QTLs on chromosomes 1, 10, 6, significantly linked to iron and protein. Analysis reveals that  QTL’s for grain protein content (qgpc-1) on chromosome 6 and (qgpc-2) and (qgpc-3) on chromosome 10 and one QTL’s for Fe content in rice grain are identify (qFe1.1) on chromosome 1.  Three markers was associated to Zn content in rice grain on chromosome 2,3,11. The flanking markers for grain zinc and protein content can be further used in maker assisted selection for advanced breeding line in biofortification programs.

Published
19-02-2016
Section
Research Article