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红花槭‘艳红’与‘金色秋天’叶色 相关化学成分的比较研究
任杰,陈竹,唐菲,宣云,杨帆,陆小雨,傅松玲
0
(1 安徽省农业科学院农业工程研究所,合肥 230031; 2 安徽农业大学林学与园林学院,合肥 230036)
摘要:
‘艳红’、‘金色秋天’均是从红花槭实生群体中选育得到的良种,其秋叶分别呈现艳红色和金黄色。为了揭示红花槭秋季叶片变红或变黄的生化水平代谢机制,以这两个无性系良种为试材,分别在5个不同发育阶段对叶片中的叶绿素、花青素苷、类胡萝卜素、可溶性糖的含量及叶片pH值进行测定,并对变色后的花青素苷的成分进行定量分析。在转色期,两者叶片的叶绿素含量均呈下降趋势,其中‘金色秋天’在转色末期叶片的叶绿素含量仅为0.06 mg·g-1;在相同时期,两者叶片中的类胡萝卜素含量差异不显著,其含量随变色过程呈下降趋势;两者可溶性糖的含量均呈现先上升后下降的趋势,在转色中期达到峰值;叶片pH值变化不显著;分光光度法检测表明,变色后,‘艳红’的花青素苷含量上升约3倍,而‘金色秋天’的花青素苷含量上升幅度较小。液相色谱(HPLC)分析表明,两个良种叶片中花青素苷均以矢车菊素为主,占95%以上,另含少量飞燕草色素;叶片转色后,‘艳红’中的矢车菊素含量是‘金色秋天’的2.6倍。结果显示,叶绿素含量的降低与矢车菊素类花青素苷的合成是红花槭叶片秋季呈色的主要决定因素,其中红叶的形成与矢车菊素含量的倍增密切相关。
关键词:  红花槭  花青素苷  叶绿素  叶色
DOI:10.13610/j.cnki.1672-352x.20190716.007
基金项目:安徽省自然科学基金(1708085MC57), 国家自然科学基金(31600543)和安徽省农业科学院团队项目(2019YL055)共同资助。
Study on leaf color related chemicals components based on comparing Acer rubum L. cv. ‘Yanhong’ and ‘Jinseqiutian’
REN Jie,CHEN Zhu,TANG Fei,XUAN Yun,YANG Fan,LU Xiaoyu,FU Songling
(Institute of Agricultural Engineering, Anhui Academy of Agricultural Sciences, Hefei 230031; School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036)
Abstract:
The red leaf line ‘Yanhong’ and the yellow leaf line ‘Jinseqiutian’ are excellent horticultural varieties of red maple (Acer rubum L.). To reveal?the biochemical metabolic mechanism of the leaf color transition to yellow or red for red maple, the contents of chlorophyll, anthocyanin, carotenoid, soluble sugar and pH value in the leaves at 5 development stages in autumn were surveyed. Moreover, the anthocyanin composition in colored leaves was quantified. The content of chlorophyll was declined in different lines during the leaf color formation phase. Chlorophyll content in ‘Jinseqiutian’ reduced to 0.06 mg·g-1 in the middle of November. There was no difference in the carotenoid content between the 2 lines in the same time points. The carotenoid content was decreased slightly, when the leaf turned color. During the five stages, the content of soluble sugar increased in the early autumn and then decreased slightly in both lines, peaked at the midst of leaf coloring period. The change of pH value in leaf was not significant. The analysis of spectrophotometric showed that the anthocyanins content in ‘Yanhong’ had a rise about 3 times, while that of the yellow group increased a little. The HPLC analysis result showed that cyanidin accounted for more than 95% of anthocyanins, with a little of delphinidin being quantified in both lines. And the cyanidin was detected in ‘Yanhong’ at a concentration of 2.6 times higher than that in ‘Jinseqiutian’ in the colored leaves. These results suggested that the degradation of chlorophyll and the synthesis of cyanidin were the two major determinants for
Key words:  Acer rubum L.  anthocyanins  chlorophyll  leave color

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