ゴマ （Sesamum indicum L.） のセサミンおよびセサモリン含量に関するダイアレル分析

日本作物学会紀事

加藤 晶子¹  大潟 直樹¹ 

[1]農業･食品産業技術総合研究機構作物研究所

关键词: 遺伝率;    ゴマ;    セサミン;    セサモリン;    相加分散;    ダイアレル分析;    優性分散;    Additive variance;    Diallel analysis;    Dominance variance;    Heritability;    Sesame;    Sesamin;    Sesamolin;   

DOI  :  10.1626/jcs.85.302

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The promotion of domestic sesame requires the development of sesame varieties with a high lignan content, which inevitably necessitates the elucidation of the genetic factors affecting sesamin and sesamolin contents. Therefore, in this experiment, the F1 and F2 plants of seven genetic resources crossed in the half-diallel manner were cultivated in the field, and the sesamin and sesamolin contents of their seeds were analyzed. Based on the Vr /Wr graph, the results fit an additive-dominant model without the influence of epistasis. The additive variance exceeded the dominance variance in both contents—the average degree of dominance was 0.58–0.88. Most of the dominance effects reduced these contents. The narrow sense heritability was 0.859–0.903, which was higher than that estimated from the other traits of sesame. Since no major differences were observed between the F1 and F2 plants in the sesamin and sesamolin contents, and a statistically significant positive correlation was observed between the sesamin and sesamolin contents in each generation, the contents of both sesamin and sesamolin would be controlled by a common polygenic system. The seed parents artificially pollinated with other pollen parents had sesamin and sesamolin contents similar to the self-pollinated seeds. These results clearly showed that selection based on the phenotype in early generations should be effective for breeding higher contents of sesamin and sesamolin.

【 授权许可】

Unknown