干旱区研究2017，Vol.34Issue(3)：655-662,8.DOI:10.13866/j.azr.2017.03.23
NaCl胁迫下外源水杨酸对棉花幼苗叶片光合特性的影响
Effects of Exogenous Salicylic Acid on Photosynthetic Characteristics of Cotton Seedlings Leaves under Salt Stress
摘要
Abstract
In order to study the effects of exogenous SA on the photosynthetic characters of cotton seedlings under NaCl stress,the "Zhongrniansuo 41" and "Zhongmiansuo 49" were incubated in pot culture under NaCl concentration of 0.60％ with the way of SA soaking + foliar application so as to relieve from the photosynthetic pigment,photosynthetic gas exchange and chlorophyll fluorescence parameters.The results showed that the contents of chlorophyll a, chlorophyll b and carotenoid could be increased by the SA treatment under NaCl stress, SA treatment could be used to regulate the stomatal closure degree, change the photosynthetic mechanism, and improve the photosynthetic absorption, dissipation and energy captured.Finally, the net photosynthetic rates (Pn) of Zhongmiansuo 41 and Zhongmiansuo 49 were increased by 8.32％-18.76％ and 14.29％-25.19％,the 0.05 mmol · L-1 +0.2 mmol · L-1 soaking spraying was the best,and Pn could be increased by 18.76％-25.19％.关键词
水杨酸(SA)/盐胁迫/棉花幼苗/叶绿素荧光动力学/光合色素Key words
salicylic acid (SA)/salt stress/cotton seedling/chlorophyll fluorescence kinetics/photosynthetic pigment引用本文复制引用
王立红,李星星,孙影影,阿曼古丽·买买提阿力,李进,张巨松..NaCl胁迫下外源水杨酸对棉花幼苗叶片光合特性的影响[J].干旱区研究,2017,34(3):655-662,8.基金项目
国家“十二五”科技支撑项目(2014BAD11B02)资助 （2014BAD11B02）
