北海道，東北，北陸地方の良食味水稲品種および「越南242号」の低温土中出芽性の評価

日本作物学会紀事

関 正裕²  古畑 昌巳²  田野井 真¹  冨田 桂¹  小林 麻子¹ 

[1]福井県農業試験場

[2]農研機構中央農業総合研究センター北陸研究センター

关键词: Cold climate area;    寒冷地;    Coleoptile;    鞘葉;    Direct seeding in flooded paddy field;    湛水直播;    Germination;    発芽;    Rice;    水稲;    Rice cultivars with high eating quality;    良食味品種;    Seedling emergence rate;    出芽速度;    Seedling establishment;    苗立ち;   

DOI  :  10.1626/jcs.83.362

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Seedling emergence following direct seeding in a flooded paddy field at a low temperature was measured. Germination characteristics under aerobic conditions and coleoptile elongation under anaerobic conditions associated with seedling emergence were assessed. The rice cultivars used were 21 high eating quality rice cultivars from Hokkaido, Tohoku, and Hokuriku districts, and Etsunan 242, which has high eating quality and good seedling emergence. The speed of seedling emergence was positively correlated with the final seedling emergence rate. The speed of germination and the germination coefficient were not correlated with the speed of seedling emergence, suggesting that germination characteristics were not related to seedling emergence. The speed of coleoptile elongation, speed of seedling emergence, and final seedling establishment rate were higher in Etsunan 242 than in other rice cultivars with high eating quality. The speed of seedling emergence, final seedling emergence rate, final seedling establishment rate, and dry weight of above-ground plant parts were highest in the cultivars from Hokkaido followed by Tohoku and Hokuriku in this order.

【 授权许可】

Unknown