Effect of quantitative trait loci for seed shattering on abscission layer formation in Asian wild rice <i>Oryza rufipogon</i>

• DOI: 10.1270/jsbbs.64.199
• Publication Date: 2014-09-17T01:59:38Z
• Authors: Than Myint Htun; Chizuru Inoue; Orn Chhourn; Takashige Ishii; Ryo Ishikawa
• Keywords: Oryza rufipogon; Abscission; Trait; Oryza

Asian cultivated rice Oryza sativa L. was domesticated from its wild ancestor, O. rufipogon. During domestication, the lost seed-shattering behaviour. Previous studies have shown that two major quantitative trait loci (QTLs; qSH1 and sh4) are responsible for degree. Here, we produced introgression lines carrying non-functional alleles 'Nipponbare' at QTLs in genetic background of rufipogon W630, examined effects on seed shattering abscission layer formation. The lines, with Nipponbare either or both loci, showed complete partial formation, respectively, indicating other unknown might be involved enhancing rice. We detected a single QTL named qSH3 regulating degree using an F2 population between line QTLs. Although generated alone, no were observed. However, significant effect observed QTLs, suggesting important role coordination