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著者 | Zhou H., Xia D., Zeng J., Jiang G., He Y. | |
タイトル | Dissecting combining ability effect in a rice NCII-III population provides insights into heterosis in indica-japonica cross. | |
Abstract: Combining ability is a measure for selecting elite parents that make the highest contributions to hybrid performance. However, the genetic bases of combining ability and how they contributed to heterosis is seldomly known. We constructed a both NCII and NCIII population derived from an indica-japonica cross to study the relationship among parental performance, combining ability and hybrid performance of 11 agronomic traits. Among them, specific combining ability is more important to grain yield than parental performance and general combining ability. We performed linkage analyses to phenotypic values and combining ability of all 11 traits in Doubled haploid lines and its two backcross populations and identified 108 QTLs in total. Among these QTLs, four known loci, Sd1, Ghd7, Ghd8 and DEP1 contribute a lot to GCA effects of agronomic traits except grain yield and seed setting rate. Three QTLs, Ghd8, S5 and qS12, contribute a lot to SCA effects of grain yield and present overdominace. Our study provides insights into the genetic bases of combining ability and heterosis and will promote the improvements of indica-japonica hybrid breeding. |
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掲載誌 | Rice (N Y) | |
Country | China | |
刊数 | 10(1) | |
ページ | 39 | |
発刊年 | 2017 | |
PubMed ID | 28853048 | |
PubMed Central ID | - | |
DOI | 10.1186/s12284-017-0179-9 | |
URL | - | |
関連情報 | ||
遺伝子 | DEP1 GHD7 HD5 S5 SD1 | |
INSD | - | |
系統 |
野生イネ コアコレクション |
- |
突然変異系統(遺伝研 Collection) | - | |
種子不稔系統 | - | |
致死変異体系統 | - | |
組織別発生段階 - 突然変異系統(遺伝子) |
- | |
栽培イネ品種(遺伝研 Collection) | - | |
組織別発生段階 | - |