菊叶薯蓣和盾叶薯蓣的光合特性初探

Preliminary Study on Photosynthetic Characteristics of Dioscorea camposita and Dioscorea zingiberensis

对陕西安康试验站引种的菊叶薯蓣和当地栽种的盾叶薯蓣光合速率、蒸腾速率、光响应曲线、水分利用率等生理特性测定和分析表明:同等条件下,菊叶薯蓣的光合速率、蒸腾速率、水分利用率均大于盾叶薯蓣。菊叶薯蓣、盾叶薯蓣的光饱和点分别为800、400μmol.m-2.s-1,菊叶薯蓣的光合能力较强。

Photosynthetic rate, transpiration rate, water use efficiency of two Apricot for Common Yam species were measured and ananlyzed in this paper. The results showed that in the same satuation photosynthetic rate, transpiration rate and the water use efficie nye. The light sat cal ability of juye uratl was on point（CO2）of them were about 800 higher. ncy of juye was higher than those of du .400μmol·m^-2·s^-1 ;so the physiologi