【摘 要】
：
葛枣猕猴桃叶片颜色在生长期内呈现白、绿相间，本研究通过观测其叶片结构特征和光谱学特性，以期阐明葛枣猕猴桃彩叶呈色原因。结果显示：葛枣猕猴桃白色叶片较绿色叶片其栅栏组织细胞分散排列，可见大量气室，而正常绿色叶片栅栏组织细胞呈圆柱形紧密排列。反射光谱数据显示，白叶近轴面反射在485-1000 nm区间均高于绿色叶片，但当叶片返绿后，其反射谱类似于绿叶。在远轴表面，白色叶片在450-750 nm区间与绿
【机 构】
：
中国农业科学院特产研究所 山东农业大学生命科学学院作物生物学国家重点实验室
论文部分内容阅读
葛枣猕猴桃叶片颜色在生长期内呈现白、绿相间，本研究通过观测其叶片结构特征和光谱学特性，以期阐明葛枣猕猴桃彩叶呈色原因。结果显示：葛枣猕猴桃白色叶片较绿色叶片其栅栏组织细胞分散排列，可见大量气室，而正常绿色叶片栅栏组织细胞呈圆柱形紧密排列。反射光谱数据显示，白叶近轴面反射在485-1000 nm区间均高于绿色叶片，但当叶片返绿后，其反射谱类似于绿叶。在远轴表面，白色叶片在450-750 nm区间与绿叶的反射光谱相似，但在750-1100 nm区间的反射光谱显著高于绿色叶片。白叶近轴面叶绿素含量显著低于远轴面和绿色叶片。结论：葛枣猕猴桃彩叶属于结构型彩叶，白叶主要归因于光反射结构的存在和栅栏组织细胞叶绿素的亏缺。
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