南京林业大学学报(自然科学版) ›› 2022, Vol. 46 ›› Issue (2): 103-110.doi: 10.12302/j.issn.1000-2006.202105048
收稿日期:
2021-05-29
接受日期:
2021-10-02
出版日期:
2022-03-30
发布日期:
2022-04-08
通讯作者:
方升佐
基金资助:
XU Zhanhong(), ZHU Ying, JIN Huiying, SUN Caowen, FANG Shengzuo()
Received:
2021-05-29
Accepted:
2021-10-02
Online:
2022-03-30
Published:
2022-04-08
Contact:
FANG Shengzuo
摘要:
【目的】青钱柳是多功能树种,通过比较分析两种不同叶色青钱柳叶片色素、黄酮和单宁两类多酚含量及其光合特性的差异,为青钱柳良种选育提供理论依据。【方法】按照季节动态分别采集红叶青钱柳和绿叶青钱柳的新叶和成熟叶,测定其花色素苷、叶绿素、类胡萝卜素、单宁和黄酮含量,定期测定4种类型叶的净光合速率(Pn)和PSⅡ最大光化学效率(Fv/Fm),并采用单因素方差分析比较不同类型叶间的差异。【结果】红叶青钱柳的新叶花色素苷含量显著高于其他3种类型叶(P<0.05),但叶绿素和类胡萝卜素含量显著低于红叶青钱柳和绿叶青钱柳的成熟叶片(P<0.05);红叶青钱柳和绿叶青钱柳的成熟叶片中的黄酮和单宁含量在多数采样时间均无显著差异(P> 0.05),但在秋季,红叶青钱柳成熟叶片的单宁含量显著高于绿叶青钱柳的成熟叶片(P<0.05);由于红叶青钱柳的新叶积累高花色素苷含量而使总叶绿素含量下降,但其Pn与绿叶青钱柳的新叶不存在显著差异(P> 0.05),红叶青钱柳和绿叶青钱柳成熟叶片的Pn也不存在显著差异(P> 0.05)。【结论】较高浓度的花色素苷是红叶青钱柳新叶呈现红色的主要原因;红叶青钱柳和绿叶青钱柳叶中单宁与黄酮的含量存在一定差异,但总体上差异不显著;红叶青钱柳新叶阶段叶多酚类物质含量较高,但在成熟叶阶段与绿叶青钱柳无显著差异(P> 0.05)。因此,红叶这一表型性状可为青钱柳药用优良单株的筛选提供一定参考,红叶青钱柳在7—8月叶片仍保持较高花色素苷含量而呈现红色,比绿叶青钱柳具有更高的观赏价值。
中图分类号:
徐展宏,朱莹,金慧颖,等. 不同叶色青钱柳叶片色素、多酚含量及光合特性的差异[J]. 南京林业大学学报(自然科学版), 2022, 46(2): 103-110.
XU Zhanhong, ZHU Ying, JIN Huiying, SUN Caowen, FANG Shengzuo. Variations in the contents of leaf pigments and polyphenols and photosynthesis traits in Cyclocarya paliurus with different leaf colors[J].Journal of Nanjing Forestry University (Natural Science Edition), 2022, 46(2): 103-110.DOI: 10.12302/j.issn.1000-2006.202105048.
表1
青钱柳叶色素含量与多酚类物质含量的相关性分析(n=60)"
因子 factors | 花色素苷含量 anthocyanin content | 类胡萝 卜素含量 carotenoid content | 叶绿素含量 chlorophyll content | 单宁含量 tannin content |
---|---|---|---|---|
类胡萝卜素含量 carotenoid content | -0.385** | |||
叶绿素含量chlorophyll content | -0.351** | 0.856** | ||
单宁含量tannin content | 0.221** | -0.289** | -0.223** | |
黄酮含量flavonoid content | 0.233** | -0.345** | -0.325** | 0.506** |
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