水稲の光合成速度に及ぼす二酸化硫黄の影響の適切な測定方法

日本作物学会紀事

長尾 祐一¹  梅崎 輝尚¹  谷山 鉄郎²  松井 昭博¹ 

[1] 三重大学;中部大学

关键词: Recovery rate;    光合成回復率;    Inhibitory rate;    光合成阻害率;    Photosynthesis;    光合成速度;    Rice;    水稲;    Sulfur dioxide;    二酸化硫黄;   

DOI  :  10.1626/jcs.72.443

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In order to establish an adequate method of examining the inhibitory effect of SO2 on photosynthesis in rice, we examined the effect of SO2 under various conditions differing in growth stage, CO2 concentration, light intensity, leaf position, leaf age and others. The rate of recovery from the inhibition was also examined. When whole (individual) plants were exposed SO2 between 8 : 00 and 14 : 00, light intensity and CO2 concentration scarcely influenced the inhibitory effect of SO2 on photosynthesis and recovery rate from the inhibition. When only a leaf blade was exposed to SO2, the inhibitory effect was the highest in the latest expanded leaf blade. The photosynthesis-inhibiting effect of SO2 in the flag leaf was higher at the heading stage than at 10 or 20 days after heading. However, the most stable results were obtained when the flag leaf was exposed to SO2 10 days after heading irrespective of the cultivation method.

【 授权许可】

Unknown