《植物生理学报》 2016, 52(12): 1921-1926

狗枣猕猴桃彩叶色素含量和结构共同影响叶色

王振兴¹, 曹建冉¹, 秦红艳¹, 赵滢¹, 陈丽², 艾军^1,*, 刘涛³

¹中国农业科学院特产研究所, 长春130112; ²吉林农业大学园艺学院, 长春130112; ³集安市特产局, 吉林集安134200

通信作者：艾军；E-mail: aijun1005@163.com

摘　要：

以狗枣猕猴桃彩叶和绿叶为实验材料, 通过叶片结构及光谱学特性探讨了彩叶的呈色原因。结果显示: (1)尽管彩叶(白色和粉红色)与绿叶的颜色差异很大, 但彩叶仍保持较高的叶绿素含量; (2)所有彩色叶表均无特殊结构, 但其叶肉结构更疏松且与正常叶片差异显著; (3)白色叶片对红、绿和蓝光的反射均很强, 而粉红色叶片对红光反射较强。此外, 叶片两侧的光谱学特性也存在一些差异。基于上述研究, 我们认为狗枣猕猴桃叶片呈现白色不是由于叶绿素的严重缺失, 而是与特殊叶片结构导致的光反射有关; 粉红色叶片的叶色一方面取决于较高的花青素含量, 另一方面叶片结构可能对其叶色也有影响。

关键词：狗枣猕猴桃; 彩叶; 结构特征; 反射光谱

收稿：2016-07-25   修定：2016-10-21

资助：吉林省科技公关计划(20140204034NY)。

Common effect of pigment content and leaf structure on leaf color in Actinidia kolomikta

WANG Zhen-Xing¹, CAO Jian-Ran¹, QIN Hong-Yan¹, ZHAO Ying¹, CHEN Li², AI Jun^1,*, LIU Tao³

¹Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; ²College of Horticulture, Jilin Agricultural University, Changchun 130112, China; ³Ji’an Special Product Bureau, Ji’an, Jilin 134200, China

Corresponding author: AI Jun; E-mail: aijun1005@163.com

Abstract:

Coloring reason of variegated leaves in Actinidia kolomikta was studied on the base of leaf structure and spectrum characteristics. The results showed: (1) Although variegated leaf color (white and pink) have significantly differed with green leaf, chlorophyll content of variegated leaf still retained higher level; (2) All kind of variegated leaves had no special leaf epidermis structure, but their mesophyll cells were loose, and structure difference of variegated and green leaf was very greatly; (3) White leaf reflected more red, green and blue light, but pink leaf reflected more red light. In addition, reflectance rate of variegated leaves in adaxial and abaxial surface also exit difference. In conclusion, white leaves were not the result of chlorophyll deficiency, it may be due to internal reflection structure; pink leaves were due to anthocyanin accumulation, and leaf structure may also affect leaf color to some degree.

Key words: Actinidia kolomikta; variegated leaf; structural characteristic; reflection spectrum