安徽农业大学学报2011，Vol.38Issue(1)：106-109,4.DOI:CNKI:34-1162/S.20110107.1519.013
东魁与荸荠种杨梅叶片春季光合特性比较
Comparison of leaf photosynthetic characteristics between two Chinese bayberry cultivars in spring season
摘要
Abstract
Under the field conditions in spring season, diurnal changes in photosynthetic parameters, specific leaf dry weight, contents of chlorophyll and carbohydrate in leaves were compared between Dongkui and Biqi Chinese bayberry with Li-6400 photosynthetic instrument. The results showed that their diumal changes of net photosynthetic rate (Pn) exhibited dual-peak curves because of midday depression. Pn, water use efficiency (WUE) and stomatal conductance (Gs) of Dongkui cultivar were significantly higher than those of Biqi, but its transpiration rate (Tr) was significantly lower. The increase in stomatal limitation (Ls) and the decrease in intercellular CO2 concentration (Ci) accompanied a reduction of Pn at noon indicated that the depression of photosynthetic rate was mainly due to the stomatal limitations. The contents of chlorophyll and Chl (a/b) of Dongkui were slightly lower than those of Biqi. The specific leaf dry weight, contents of soluble sugar, reducing sugar and starch of Biqi cultivar were significantly higher than those ofDongkui cultivar.关键词
杨梅/光合作用/叶绿素/比叶重/可溶性糖Key words
Chinese bayberry/ photosynthesis/ chlorophyll/ specific leaf dry weight/ soluble sugar分类
农业科技引用本文复制引用
程晓建,谷镜,张敏,王白坡..东魁与荸荠种杨梅叶片春季光合特性比较[J].安徽农业大学学报,2011,38(1):106-109,4.基金项目
国家科技成果转化重点项目(2006GB2C200113)和浙江省科学技术重大项目(021102537)共同资助. （2006GB2C200113）
