Days to heading, controlled by the heading date genes, Hd1 and DTH8, limits rice yield-related traits in Hokkaido, Japan

DOI Web Site Web Site 被引用文献2件 参考文献22件 オープンアクセス
  • Fujino Kenji
    Hokkaido Agricultural Research Center, National Agricultural Research Organization

書誌事項

タイトル別名
  • Days to heading, controlled by the heading date genes, <i>Hd1</i> and <i>DTH8</i>, limits rice yield-related traits in Hokkaido, Japan

この論文をさがす

説明

<p>A key aspect of rice breeding programs is the optimization of days to heading (DTH) for maximizing grain productivity in cultivation areas. Here, the effects of genotypes for heading date on yield-related traits in rice (culm and panicle length (CL and PL), panicle number (PN), and total number of seeds) were investigated. Heading date 1 (Hd1) and Days to heading 8 (DTH8) are the main controllers of the variation in heading date in the rice population of Hokkaido, Japan. Thus, an F2 population (n = 192) derived from a cross between Kitaibuki (Hd1dth8) and Akage (hd1DTH8) was developed. Significant differences in DTH were found among all combinations. Each genotype for heading date showed variations in the yield-related traits without a significant difference. However, DTH exhibited high positive coefficient values (more than 0.709) with the yield-related traits except for PN, which had a negative coefficient value of –0.431. A later heading date resulted in a longer growth duration and a higher yield with a combination of longer PL and CL and lower PN. These results suggest that DTH limits the yield-related traits rather than the genotype for heading date.</p>

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (22)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ