イネの耐酸性機構に関する研究

日本作物学会紀事

姜 東鎮¹  石井 龍一¹ 

[1] 東京大学大学院

关键词: Oryza glaberrima Steud;    アフリカイネ;    Aluminum;    アルミニウム耐性;    Oryza sativa L.;    イネ;    Photosynthesis;    光合成;    Acid soil tolerance;    酸性土壌耐性;    Rice;   

DOI  :  10.1626/jcs.72.171

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The purpose of the present paper is to identify morphological and physiological traits of acid soil tolerant varieties of rice plants (Oryza sativa L.) in Narathiwat Province of Southern Thailand where the yield reduction of rice plants due to acid soil is markedly severe. Six tolerant varieties selected from 48 grown under artificially prepared acid soil (pH 4.0) for 4 weeks after transplanting, and 3 intolerant varieties as a control were used in the present study. Tolerant varieties had longer roots and a larger leaf area than intolerant varieties in acid soil conditions. Aluminum (Al) concentration in the leaves was significantly lower in tolerant varieties than in intolerant varieties. Leaf photosynthesis (LPS) of tolerant varieties was significantly higher than that of the intolerant varieties in acid soil conditions. These results indicate that transportation of Al from the root to the leaf is prevented by some mechanism in the tolerant varieties, which may be a mechanism of acid soil tolerance.

【 授权许可】

Unknown