不同叶色红栌叶片中色素含量、酶活性及内含物差异的研究

为明确秋季不同叶色美国红栌叶片的生理差异，以秋季同一植株上红色、中间色、绿色三种颜色的美国红栌叶片为试材，测定了叶片中色素物质含量、酶活性以及叶片可溶性内含物的含量，结果表明：在红色叶片中，叶绿素含量较低，PAL、POD酶活性较高，花青素苷/叶绿素的比值较大，从而使叶色显现红色；而在绿色叶片中，叶绿素含量较高，PAL、POD酶活性较小，花青素苷/叶绿素的比值较低，叶片显现绿色。通过可溶性内含物测定可知，在红色叶片中的可溶性糖和蛋白质含量相对较高，均与花青素苷/叶绿素的比值达到显著相关水平，表明这些内含物的积累有利于花色素苷的合成。

The Enzyme Activities,Pigment and Inclusion Contents in Different Leaves Color of Cotinus coggygria 'Royal Purple' in Autumn

The physiological character of different leaves color in autumn was studied. 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. The green leaves have higher chlorophyll content，lower PAL and POD activity and lower ratio of anthocyanin to chlorophyll. 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.