インド型イネにおける穂ばらみ期および開花期耐冷性の評価

日本作物学会紀事

笹原 英樹¹  重宗 明子¹  後藤 明俊¹  三浦 清之¹ 

[1] 中央農業総合研究センター

关键词: Indica;    インド型イネ;    Flowering stage;    開花期耐冷性;    Rice;    水稲;    Varietal difference;    品種間差異;    Cold tolerance;    穂ばらみ期耐冷性;    Booting stage;   

DOI  :  10.1626/jcs.77.167

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

We estimated cool tolerance in high yielding varieties bred in Hokuriku National Agricultural Experiment Station and their ancestral varieties, including indica varieties, for screening materials to breed high-yielding indica rice varieties suitable for cold weather. "Jou 344", "Hokuriku 193" and "GUIZHAO 2", which are indica varieties, had high cool tolerance at the booting stage. In the breeding process of "Jou 344", large transgressive segregation towards high cool tolerance occurred. This suggests that there is a combination of genetic factors, which is complementary and highly effective for cold tolerance at the booting stage in indica rice varieties. "Suweon 258" and "Jou 344", which are indica varieties, had high cool tolerance at the flowering stage. Because "Suweon 258" is the parental variety of "Jou 344", these varieties may have a genetic factor effective for cool tolerance at the flowering stage. It is useful to find the genetic factor for improving the cool tolerance at the flowering stage in indica varieties. No relationship was found between cool tolerance at the booting stage and cool tolerance at the flowering stage.

【 授权许可】

Unknown