果实套袋对梨果台枝叶片光合作用的影响

Effect of Bagging Fruit on Photosynthesis of Fruit Spur Leaf of Pear

研究分析了果实套袋对华山、翠冠和丰水3个砂梨品种果台枝叶片光合作用的影响。结果表明:果台枝果实套袋后,枝上叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs)均显著下降,而胞间CO2浓度(C i)没有较大差异,可能与果实套袋后"库"力减弱有关。

The effect of fruit-bagging on the photosynthetic characteristics of fruit spur leaf of three pear varieties was studied.The results showed that the net photosynthetic rate(Pn),stomatal conductance(Gs) and transpiration rate(Tr) of fruit spur leaves all decreased significantly(P<0.05) after bagging the fruit,however the bagging fruit treatment had little influence on intercellular CO2 concentration(Ci).