软枣猕猴桃雌雄株光合特性差异研究

为了比较软枣猕猴桃雌雄株间光合特性差异，以野生软枣猕猴桃成龄雌雄株为试材，利用CI-340便携式光合测定仪测定了光合特性。结果表明：软枣猕猴桃雌株的净光合速率日变化曲线为双峰型，而雄株为三峰型，雌雄株均出现“午睡”现象；软枣猕猴桃雌株蒸腾速率日变化曲线是单峰型，而雄株为双峰型，雌雄株“午睡”现象不太明显；雌株气孔导度日变化曲线为双峰型，而雄株为三峰型；雌雄株细胞间隙CO2浓度日变化曲线趋势基本一致，均出现3次高峰，但出现的时间和峰值具有显著差异；雌雄株叶面温度日变化均为双峰型，但高峰出现的时间和峰值均有较显著差异。软枣猕猴桃雌雄株间光和特性日变化在趋势和数值上均具有显著差异，可以作为性别鉴定的有效方法。

Study on Difference of Photosynthetic Characteristics Between Female and Male Actinidia arguta (Seib.et Zucc.) Plangch.ex Miq

[Objective][Method]In order to compare the difference of photosynthetic characteristics between female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq, the wild female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex of mature plant were used as materials and the photosynthetic characteristics were measured by the CI-340 portable photosynthetic system. [Result]The results stated that: the daily variation of net photosynthesis rate of female Actinidia arguta( Seib. et Zucc. )Plangch. ex Miq. appeared a bimodal peak, on the contrary, the male Actinidia arguta( Seib. et Zucc. )Plangch. ex Miq. showed a triple one. However, both of female and male showed obvious characteristics of photosynthesis mid-nap; the daily variation of transpiration rate of female Actinidia arguta( Seib. et Zucc. )Plangch. ex Miq. revealed a unimodal peak while a bimodal peak could be seen in the male Actinidia arguta( Seib. et Zucc. )Plangch. ex Miq. Nevertheless, both of female and male showed less obvious characteristics of transpiration mid-nap; the diurnal variations of stomatal conductance of female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq demonstrated the same phenomenon as net photosynthesis rate; the curvilinear trend of diurnal variations of internal CO2 between female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq was basically consistent. And both of them showed three peaks whose time and values were different; the diurnal variations of leaf temperature of female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq both showed a bimodal peak, but the time and value of it occupied significant differences. [Conclusion]The photosynthetic characteristics of female and male Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq have a significant difference which is not noly the the daily variation of tendency,but also the value of the peak,so it can be used as an effective method with sex identification of Actinidia arguta ( Seib.et Zucc.)Plangch.ex Miq