The Study on Physiological and Biochemical Characteristics in Different Color Leaves of Parthenocissus quinquefolia in Autumn

The paper studied the physiological character of different leaves color in autumn.Three kinds of leaves colors were selected to measure the pigment content,enzyme activity and inclusion in the leaves.The results showed that it had lower chlorophyll content,higher PAL and POD activities and larger ratio of anthocyanin to chlorophyll in red leaves.These made the ratio of R/G heigh and the leaves appeared red color.The green leaves have higher chlorophyll content,lower PAL and POD activity and lower ratio of anthocyanin to chlorophyll.The ratio of R/G was low and the leaves appeared red color.Through the determination of soluble contents,the content of sugar and protein was relatively high in red leaves.The correlation coefficient between the ratio of anthocyanins to chlorophyll and soluble contents were all reach absolutely significance levels.These indicated that the accumulation of material contents was favorable in the synthesis of anthocyanin.