关键词：
黄金枸骨;叶绿素;类胡萝卜素;花色素苷;色素含量;叶色表现
摘 要：
为研究黄金枸骨叶色在遮荫下变色的问题,通过盆栽试验,利用人工遮荫使叶色变化,观测叶色转变期的色素变化。结果表明:叶色由黄变绿的过程中,叶色参数L,a,b值显著下降(P<0.05),花色素苷含量呈显著上升的趋势(P<0.05);叶色、叶绿素a、叶绿素b、总叶绿素和花色素苷之间呈显著正相关性(P<0.05),类胡萝卜素与其他指标为负相关性,说明这些指标的变化最终决定或影响了叶色的变化。通过分析各生理指标的变化情况,发现黄金枸骨叶色转变的根本原因是叶绿素与类胡萝卜素比值的变化,叶片中叶绿素含量增多,提高了叶绿素与类胡萝卜素的比值,使叶色变绿。
译 名：
Leaf color research during discoloration period of Ilex × attenuata ‘Sunny Foster’
作 者：
Su Jin;Huang Jing;Zhou Peng;Zhang Min;Sun Tiru;Jiangsu Academy of Forestry;College of Biology and the Environment, Nanjing Forestry University;
关键词：
Ilex × attenuata ‘Sunny Foster';;Chlorophyll;;Carotenoids;;Anthocyanin;;Pigment content;;Leaf color performance
摘 要：
In order to study the discoloration of the leaf color of Ilex × attenuata ‘Sunny Foster' under artificial shading, pot trials were conducted to observe the change of leaf color, and then the change of pigments during the period of leaf color change was dynamically observed. The results showed that the leaf color parameters L, a and b decreased significantly(P<0.0.5) during the process of yellowing and greening, however the anthocyanin content also increased significantly(P<0.05). There was a significant linear relationship among leaf color, chlorophyll a, chlorophyll b and total chlorophyll(P<0.05). By the comprehensively analyzing the changes of various physiological indexes, we found the fundamental reason for the change of leaf color of Ilex × attenuata ‘Sunny Foster' was the change of the ratio of chlorophyll to carotenoids, that was, the increase of chlorophyll content in leave caused the ratio increase of chlorophyll to carotenoids and made the leaf color green. This study provided a theoretical basis for its scientific and rational application.
