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Analysis on Combining Ability in Grain Quality of G Ruanhua A

DAI Jun-hao;LIANG Jie-cai;XIAO Wu-ming;CHEN Xiong-hui;HUANG Yu-ting;LIANG Ke-qin;National Plant Space Breeding Engineering Technology Research Center,South China Agricultural University;Guangdong South China Agricultural University Seeds Co.,Ltd.;College of Agriculture,South China Agricultural University;  
The grain quality traits and their combining ability of five male sterile lines including G Ruanhua A were analyzed through the incomplete diallel design.The results showed that the quality traits of the F_1 hybrids were controlled by both additive and non-additive effects,and the additive effect played a more important role.Of the five tested MS lines,G Ruanhua A performed excellent in the combining ability of grain quality traits with highest effect of general combining ability(GCA) in gel consistency and head rice recovery,lowest effect of GCA in chalky grain rate and chalkiness,and lower effect of GCA in amylose content,indicating that G Ruanhua A is a great MS line in breeding of fine quality hybrid rice combinations.
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