Shorter Days to Heading Increased Dry Weight Per Panicle of Short-Panicle Rice Cultivars

日本作物學會紀事

article

中込 弘二¹  藤本 寛¹  松下 景²  笹原 英樹¹  重宗 明子¹  出田 収³ 

[1] 農研機構西日本農業研究センター;農研機構次世代作物開発研究センター;農研機構管理本部

关键词: Days to heading (DTH);    Rice;    Seed production;    Short panicle;    SP1;    Whole crop silage.;   

DOI  :  10.1626/jcs.89.317

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

To elucidate the factors that affect seed yield of rice cultivars with a short-panicle (SP) caused by a mutation in the SP1 gene, we grew 64 SP cultivars in paddy fields in 2015 to 2018 and transplanted 4 SP cultivars (‘Chugokushi224’, ‘Chugokushi225’, ‘Tsukisuzuka’ and ‘Tsukikotoka’) on 3 dates in 2018 in paddy fields at the Western Region Agricultural Research Center. We recorded days to heading (DTH), dry weight per panicle, panicle number and panicle dry weight per m 2 . Dry weight per panicle contributed to panicle dry weight per m 2 , but panicle number did not. Dry weight per panicle had strong negative correlations with DTH in all SP cultivars and in all transplanting dates when DTH, 80: dry weight per panicle increased with shorter DTH.

【 授权许可】

Unknown