寒冷地における乾田直播水稲の出芽・苗立ちに関連した形質の評価

日本作物学会紀事

古畑 昌巳¹ 

[1] 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;    Direct sowing culture of paddy rice on well-drained paddy field;    乾田直播;    Germination;    発芽;    Rice;    イネ;    Seedling emergence;    出芽;    Variety;    品種;   

DOI  :  10.1626/jcs.84.418

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Seedling emergence was examined in direct sowing culture on well-drained paddy fields at low temperatures. Germination characteristics were assessed under aerobic conditions and coleoptile elongation under anaerobic conditions associated with seedling emergence. The experiments included 138 domestic and foreign rice cultivars. The speed of seedling emergence was positively correlated with the final seedling emergence rate and early plant growth. The speed of coleoptile elongation under anaerobic conditions was not correlated with the speed of seedling emergence, suggesting that coleoptile elongation under anaerobic conditions was not related to seedling emergence. The speed of germination was positively correlated with the speed of seedling emergence, suggesting that the speed of germination affects the speed of seedling emergence and consequently the final seedling emergence rate and early plant growth. I concluded that early germination was important for seedling emergence and establishment in direct sowing culture on well-drained paddy fields at low temperatures.

【 授权许可】

Unknown