中国农业大学学报2011，Vol.16Issue(5)：71-76,6.
不同光强下DA-6对草莓光合作用及抗氧化酶活性的影响
Effects of DA-6 on leaf photosynthesis and antioxidant enzyme activities of strawberry under different light intensities
摘要
Abstract
In order to elucidate the regulation effects of DA-6 on the photosynthesis of strawberry under different light intensities,DA-6 of 20 mg/L,was sprayed on the leaves of the seedlings of ＇Sweet Charlie strawberry under 100%, 70% and 50% sunlight. The leaf gas exchange parameters, activities of Rubisco and FDPase, antioxidant enzyme activities were measured. The results showed that under shade condition, the leaf photosynthetic rate （Pn）, stomatal conductance （Gs）, transpiration rate （Tr）, Rubisco and FDPase activities decreased, but the intercellular CO2 concentration （Ci） increased. It is thus clear that the decrease of Pn under low light intensity is mainly due to the non stomatal limitation and closely related to the decrease of Rubisco and FDPase. However, foliar spraying of DA-6 increased the leaf Pn, Gs, Tr and activities of Rubisco, FDPase, SOD,CAT and APX, but reduced the O2-production rate. The improvement of photosynthesis was much more significant under 50% sunlight.关键词
草莓/光强/DA-6/光合作用/抗氧化酶Key words
strawberry/light intensities/DA-6/photosynthesis/antioxidant enzyme activities分类
农业科技引用本文复制引用
梁艳萍,牟红梅,王晶晶,刘国杰,赛买提·玉素甫..不同光强下DA-6对草莓光合作用及抗氧化酶活性的影响[J].中国农业大学学报,2011,16(5):71-76,6.基金项目
公益性行业（农业)科研专项（3-37) （）
