Actinidia kolomikta leaf colour and optical characteristics

文献类型： 外文期刊

第一作者： Wang, Z. -X.

作者： Wang, Z. -X.;Fan, S. -T.;Chen, L.;Zhao, Y.;Yang, Y. -M.;Ai, J.;Li, X. -Y.;Liu, Y. -X.;Qin, H. -Y.

作者机构：

关键词： anthocyanin;chlorophyll;leaf anatomy;reflectance;spectrum characteristics;variegated leaves

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Actinidia kolomikta (Rupr. & Maxim.) Maxim. leaves showed dramatic colour changes during plant growth phases, and we studied structure and optical properties of variegated leaves. Leaf surface cells were smooth, and there were no surface appendages (wax or trichomes) observed in variegated leaves. Palisade tissue cells in white and pink leaves were looser and contained relatively fewer chloroplasts. White leaves contained many intercellular spaces between the epidermal and mesophyll cells or within the palisade cell layer. Variegated leaves had three distinct radiation reflection patterns: a bright white area, a spotted pattern, and a polygonal pattern. Reflectance at 450 - 1100 nm from the adaxial surface of white leaves was greater than that of green leaves, but anthocyanin accumulation in pink leaves decreased the reflectance at 500 - 600 nm. When variegated leaves turned green, the reflectance at 500 - 600 nm increased. On abaxial surfaces, the reflectance of variegated leaves was similar to green leaves at 450 - 700 nm. In conclusion, reflection patterns and the formation of variegated leaves of A. kolomikta were significantly correlated with the leaf anatomy. The white and pink colours of leaves were a result of an internal reflection between air spaces and cells in the leaves, chlorophyll deficiency in palisade tissue, and anthocyanin accumulation. Variegated leaves turned green when the chlorophyll content in palisade tissue increased.

分类号： Q94

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