两种彩叶桂花新品种叶绿素和花青素的比较分析

Comparative Analysis of Chlorophyll and Anthocyanin in Two New Colorful Sweet Os-manthus Cultivars

摘要: 分别采用乙醇提取法、甲醇盐酸法对彩叶桂花新品种“紫嫣公主”和“虔南桂妃”叶绿素、花青素含量进行了测定。结果表明，“紫嫣公主”和“虔南桂妃”的叶绿素含量依次为中下部叶片 > 中上部叶片 > 未成熟叶片，其中“紫嫣公主”成熟叶的叶绿素含量峰值出现在6月和10月，“虔南桂妃”则为10月份，说明“紫嫣公主”全年有两个旺盛生长期，虔南桂妃则只有一个旺盛生长期。“紫嫣公主”和“虔南桂妃”未成熟叶花青素含量的年变化均有3个峰值即3月、5月和10月，为两种彩叶桂花的最佳观赏期。

Abstract: The contents of chlorophyll and anthocyanin in the new cultivars “Ziyan Gongzhu” and “Qiannan Guifei” were determined by ethanol extraction and methanol hydrochloric acid respectively. The results showed that the chlorophyll contents of “Ziyan Gongzhu” and “Qiannan Guifei” were middle and lower leaves > middle and upper leaves > immature leaves, and the peak chlorophyll content of mature leaves of “Ziyan Gongzhu” appeared in June and October, “Qiannan Guifei” was October, indicating that “Ziyan Gongzhu” has two vigorous growth periods throughout the year, and “Qiannan Guifei” has only one vigorous growth period. The annual changes in the content of immature leaves anthocyanin in “Ziyan Gongzhu” and “Qiannan Guifei” have 3 peaks in March, May and October, which is the best viewing period for the two colored osmanthus flowers.