Additive Effects of QTLs/Genes on Rice Grain Size Traits Revealed by Genetic Comparisons

摘要

Grain size is controlled by many QTLs and/or genes.Despite intensive study,the genetic interactions between these QTLs/genes remain largely unclear.We previously found that the japonica large-grain rice cultivar TD70 with 1000-grain weight of 68.6 g carries superior alleles at the loci GW2,GS3,qGL3,GS5 and GW8,all of which are known to control grain size,while the indica rice variety Kasalath with 1000-grain weight of 19.1 g has normal alleles at these loci.