Analysis of Characteristics and Genes of Quality Traits of Hybrid Rice Main Sterile Lines in South China
The three-line sterile lines bred and promoted in Guangdong and Guangxi are divided into three types:high-yield type(early stage),high-quality type(mid stage),and high-quality and high-yield type(late stage).High yield type sterile lines include Bo A,Y huanong A,Tianfeng A,Wufeng A,etc.High quality type sterile lines include Yuefeng A,Yexiang A,Taifeng A and Guang 8A,etc.High quality and high yield type sterile lines include Gui A,Xianghe A,Gengxiang A,etc.The quality traits of three types of sterile lines were analysed and the quality genes of different sterile lines were detected by PARMS-SNP detection technology in order to improve quality rice breeding.The results showed that,most high yield sterile lines have the following characteristics:amylose content between 22.4％and 26.9％,the grain ratio of length to width ≤3.0,the level of transparency≥2,and carry unfavorable quality genes such as ALK,Chalk5,Wx-a,GS3,etc.High quality sterile lines have the following characteristics:amylose content between 12.0％and 18.0％,the grain ratio of length to width between 3.6 and 4.3,gel consistency ≥62 mm,the level of transparency≤2,and processing high quality genes such as Wx-b,fgr,GW5,GL7,GW8,etc.High quality and high yield sterile lines have the following characteristics:the amylose content between 13.0％and 16.0％,the grain ratio of length to width between 3.3 and 3.6,gel consistency≥60 mm,chalkiness between 0 and 1.5％,possessing high quality genes Wx-b and GW5 and high yield.
hybrid ricethree-line sterile linesquality traitsquality genesSouth China
万方数据
维普
