福島県内の農家水田において栽培されたコシヒカリとひとめぼれの 玄米外観品質の高温反応の比較

日本作物学会紀事

藤田 智博¹  藤村 恵人¹ 

[1] 福島県農業総合センター作物園芸部

关键词: Cultivar;    品種;    Fukushima prefecture;    福島県;    High temperature stress;    高温登熟障害;    Rice;    イネ;    Transparency;    白未熟;   

DOI  :  10.1626/jcs.81.207

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Differences in ripening capability at high temperatures were examined for Koshihikari and Hitomebore in farmers' fields in Fukushima prefecture. Mean daily average temperatures during 20 days, mean daily lowest temperatures during 20 days and cumulative temperatures above 30 °C for daily highest temperature during 10 days around heading were calculated and the effects of temperature on rice grain qualities were analyzed. The average incidence of milky white kernel, white-back & white-belly kernel and white-based kernel for the two cultivars was 8.2%, 4.6% and 1.2%, respectively. The incidences of white-back & white-belly kernels and white-based kernel were significantly higher in Koshihikari than in Hitomebore. The incidence of white-back & white-belly kernel was significantly and positively correlated with mean daily average temperatures in Koshihikari and the correlation was highest with the average temperature during 8 to 27 days after heading. The average temperatures during this period were similar in Koshihikari and Hitomebore, which indicated that ripening capability at high temperatures was higher in Hitomebore than in Koshihikari.

【 授权许可】

Unknown