Leaf color changes in Acer palmatum ‘Atropurpureum’ and relations to pigment content
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摘要: 为探讨红枫Acer palmatum Atropurpureum的春季叶色变化规律，发掘红枫叶色表现与叶片色素质量分数之间的内在关联，通过用分光光度计和叶色扫描测定了红枫春季叶色变化过程中不同叶位的叶绿素、类胡萝卜素和花色素苷与叶色的明度参数L，色相参数a*和b*值。结果表明：随春季时间推移，各叶位叶片叶绿素质量分数均逐渐上升，类胡萝卜素质量分数则呈现先上升后下降的变化规律。上位叶和中位叶中花色素苷相对含量先略有上升然后下降，而花色素苷相对含量与总叶绿素质量分数的比值变化则与下位叶一致，呈逐渐下降的变化规律。与上位叶相比，下位叶的叶色红色程度a*值随花色素苷的下降而下降很快，即叶色转为绿色的时间较早，影响植株的整体观赏性。图6表1参15Abstract: To determine regular patterns of leaf color change for Acer palmatum Atropurpureum in spring and to explore linkages between leaf color expression and leaf pigment，a spectrophotometer and leaf scanning were used to measure the chlorophyll，carotenoids and anthocyanins，as well as the hue value，brightness and purity of leaf color. Results showed that，as time passed，the chlorophyll content for the upper，mid-level and lower leaf positions increased gradually; whereas variation in the carotenoid content first increaed and then decreased. Anthocyanin in the upper and mid-level leaves increased slightly at first and then overall decreased. For the lower leaves，change in the ratio of anthocyanin to chlorophyll gradually decreased. Compared with the upper leaves，the a* value，representing the red color in lower leaves，declined rapidly with the deline of anthocyanin. Thus，leaf color turned green too early，which could affect the ornamental value of the plant.［Ch，6 fig. 1 tab. 15 ref.］
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Key words:
- horticulture /
- Acer palmatum ‘Atropurpureum’ /
- photosynthetic pigments /
- anthocyanin /
- leaf color parameter /
- relations
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.05.016
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