Single leaf Photosynthesis of Rice Plants under Field Conditions : VI. The degree of depression in single-leaf photosynthesis induced by water shortage estimated by an ambient air humidifying treatment

Japanese Journal of Crop Science

Eiki KURODA¹  Atsuhiko KUMURA¹ 

关键词: Ambient air humidifying treatment;    外囲空気加湿処理;    Rice plants;    気孔伝導度;    Single-leaf photosynthesis;    個葉光合成;    Stomatal conductance;    水稲;    Water shortage;    水不足;   

DOI  :  10.1626/jcs.59.120

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Single leaf photosynthesis (CER) always rose by the treatment in which the ambient air around single leaves was temporarily humidified. This fact suggested CER was habitually depressed by water shortage even under the flooded conditions. Based on the extent of CER increase by the treatment, the degree of depression in CER by water shortage was estimated at various times of a day and at various growth stages after anthesis. The extent of increase by the treatment in flag leaves increased with time after anthesis ranging from ca. 5% (in the morning at anthesis) to ca. 40% (in the afternoon at full maturity). From the above mentioned results, it was concluded that the degree of depression in CER by water shortage increased with time after anthesis.

【 授权许可】

Unknown