RRC ID 31824
著者 Htun TM, Inoue C, Chhourn O, Ishii T, Ishikawa R.
タイトル Effect of quantitative trait loci for seed shattering on abscission layer formation in Asian wild rice Oryza rufipogon.
ジャーナル Breed Sci
Abstract Asian cultivated rice Oryza sativa L. was domesticated from its wild ancestor, O. rufipogon. During domestication, the cultivated rice lost its seed-shattering behaviour. Previous studies have shown that two major quantitative trait loci (QTLs; qSH1 and sh4) are responsible for the seed-shattering degree. Here, we produced introgression lines carrying non-functional alleles from O. sativa 'Nipponbare' at the two major QTLs in the genetic background of wild rice O. rufipogon W630, and examined the effects of the two QTLs on seed shattering and abscission layer formation. The introgression lines, with Nipponbare alleles at either or both loci, showed complete or partial abscission layer formation, respectively, indicating that other unknown loci might be involved in enhancing seed shattering in wild rice. We detected a single QTL named qSH3 regulating seed-shattering degree using an F2 population between Nipponbare and the introgression line carrying Nipponbare alleles at the two QTLs. Although we generated an introgression line for qSH3 alone, no effects on seed shattering were observed. However, a significant effect on seed-shattering degree was observed for the introgression line carrying Nipponbare alleles at qSH3 and the two QTLs, suggesting an important role of qSH3 on seed shattering in coordination with the two QTLs.
巻・号 64(3)
ページ 199-205
公開日 2014-9-1
DOI 10.1270/jsbbs.64.199
PII 64_199
PMID 25320554
PMC PMC4154608
IF 1.865
引用数 14
WOS 分野 AGRONOMY PLANT SCIENCES
リソース情報
イネ W0630