水稲品種オオチカラとその短根性準同質遺伝子系統IL-srt1の生理的特性

日本作物学会紀事

趙 仁貴¹  武田 真²  劉 建¹  塩津 文隆¹  楠谷 彰人²  一井 眞比古²  豊田 正範² 

[1] 愛媛大学大学院連合農学研究科;香川大学農学部

关键词: Bleeding rate;    出液速度;    IL-srt1;    Near isogenic line;    準同質遺伝子系統;    Oochikara;    オオチカラ;    Photosynthetic rate;    光合成速度;    Rice;    水稲;    Short-root gene;    短根遺伝子;   

DOI  :  10.1626/jcs.75.148

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The shoot and root characters, the bleeding rate and the photosynthetic rate in flag leaves of rice cultivar Oochikara were compared with its short-root near isogenic line IL-srt1 at the heading stage. The bleeding rate per plant in IL-srt1 was only 56% of that in Oochikara. The total root length and total root weight in IL-srt1 were 30% and 35% of those in Oochikara, respectively. On the other hand, the bleeding rate per total root length and that per total root weight in IL-srt1 were 188% and 163% of those in Oochikara, respectively, showing a significant difference between the two lines. Thus, although the root mass was larger in Oochikara than in IL-srt1, the bleeding rate per unit root mass was higher in IL-srt1 than in Oochikara. These results suggest that the physiological activities of total root in IL-srt1 were lower than that in Oochikara, due to the smaller root mass, and that IL-srt1 had higher physiological activities per unit root mass than Oochikara. There was no significant difference in photosynthetic rate between the two lines, suggesting that the short-root gene srt1 did not affect the photosynthesis.

【 授权许可】

Unknown