Distribution and Effect Analysis of Grain Size Genes GL7,GS3,gw5,LGY3 and tgw6 in Indica and Geng Rice Varieties
LI Fan
GUO Xinya
CHEN Chun
WANG Feifei
CHEN Weijun
Abstract：Grain size of rice is an important determinant of rice yield and quality.In order to clarify the distribution and regulating effects of different grain size genes in japonica and indica rice varieties,five genes(GS3,GL7,GW5,lgy3 and TGW6)in 90 geng rice varieties and 50 indica rice varieties were detected with molecular markers.The grain length and grain width of rice varieties with different gene types were measured and analyzed.The results showed that the GL 7 long-grain genotype existed in both geng and indica rice with 4.4％and 18.0％.GL7 long-grain genotype significantly increased grain length and length-width ratio of geng rice and indica rice,but shortened the grain width at the same time.GS3 long-grain genotype existed in geng rice with a proportion of 2.2％,but existed in indica rice with 94.0％.GS3 long-grain genotype increased grain length ratio of indica rice,but the difference was not statistically significant.GW5 wide-grain genotype was common in geng rice with 87.8％,but not detected in indica rice.GW5 wide grain genotype significantly increased grain width,but shortened grain length and length-to-width ratio significantly.lgy3 long-grain genotype was not detected in neither geng and indica rice varieties.TGW6 long-grain genotype existed in indica rice varieties with a small proportion of 4.0％,but was not detected in tested geng rice varieties.
Keywords：Grain size geneIndica riceGeng riceDistributionRegulating effect
Publication Date：2025-06-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 7-16 )