Pyramiding QTL for yield-related traits and grain shape in rice using single-segment substitution lines

作者:Zhao, Fang Ming*; Zhang, Gui Quan; Yang, Zheng Lin; He, Guang Hua
来源:INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 2014, 74(4): 496-498.
DOI:10.5958/0975-6906.2014.00875.X

摘要

In this study, six Secondary Single-segment substitution lines (SSSLs) and five double-segment substitution lines (DSSLS) that had higher yield were produced by selective crossing of seven primary SSSLs. The DSSL-D3 had significantly higher (by 9.44%) yield than Huajingxian74, the recurrent parent. With pyramided QTL gGL3, gGWT3, gPN and the Waxy locus, the DSSL D2 showed a higher yield (by 8.70%) combined with long and high-quality grain. These results indicated that pyramiding of favourable QTL using SSSLs is feasible to improve rice yield and quality.