アズキ極晩生遺伝資源の開花着莢障害耐冷性評価法の開発

日本作物学会紀事

青山 聡¹  島田 尚典¹ 

[1] 北海道立総合研究機構十勝農業試験場

关键词: Azuki bean;    アズキ;    Cool tolerance;    耐冷性;    Extremely late;    極晩生;    Flowering;    開花;    Genetic resource;    遺伝資源;    Pod setting;    着莢;   

DOI  :  10.1626/jcs.83.326

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The breeding of azuki bean tolerant to damage by cool shading is indispensable for stable production of azuki bean in Hokkaido. However, it was difficult to evaluate cool tolerance of extremely late-flowering genetic resources because of the need to control flowering. We established a method for evaluating the cool tolerance in flowering and pod setting damage. Firstly, we examined the cool tolerance of Buchi-syoryu No.1, which is the most cool tolerant among the existing resources, and 97 genetic resources. The flowering stages were made uniform by short-day treatment. The number of flowers and pods setting were counted from day 6 to 10 after the 7-day cool shading treatment (high/low, 15/10°C, 50ï¼… shading) from the flowering stage. We evaluated the cool tolerance by the number of flowers and pod setting rate as compared with Buchi-shoryu No.1 which is considered “medium”, and found that 4 resources including Acc2265 are tolerant and 22 resources are moderately tolerant. Secondly, the effect of cool shading treatment for 7 and 10 days was compared. In either treatment, Acc2265 surpassed Buchi-syoryu No.1 in the number of flowers, and pod setting rate. Ten-day treatment was more definite than 7-day treatment. Hence, we propose a method to select the cool-tolerant resources based on the number of flowers from day 5 to 9 after the 10-day treatment, and then based on the number of pods setting from day 10 to 13 after the treatment, for evaluation of many materials.

【 授权许可】

Unknown