孙健, 张鸿翎, 韩涛. 4种彩叶树春季叶片转色期色素含量变化研究[J]. 西南林业大学学报(自然科学), 2022, 42(6): 158–163 . DOI: 10.11929/j.swfu.202108009
引用本文: 孙健, 张鸿翎, 韩涛. 4种彩叶树春季叶片转色期色素含量变化研究[J]. 西南林业大学学报(自然科学), 2022, 42(6): 158–163 . DOI: 10.11929/j.swfu.202108009
Sun Jian, Zhang Hongling, Han Tao. A Study on Changes of Pigment Content in Leaves of 4 Color-leafed Species During Color Changing Period in Spring[J]. Journal of Southwest Forestry University, 2022, 42(6): 158-163. DOI: 10.11929/j.swfu.202108009
Citation: Sun Jian, Zhang Hongling, Han Tao. A Study on Changes of Pigment Content in Leaves of 4 Color-leafed Species During Color Changing Period in Spring[J]. Journal of Southwest Forestry University, 2022, 42(6): 158-163. DOI: 10.11929/j.swfu.202108009

4种彩叶树春季叶片转色期色素含量变化研究

A Study on Changes of Pigment Content in Leaves of 4 Color-leafed Species During Color Changing Period in Spring

  • 摘要: 以金叶复叶槭、红叶榆叶梅、金叶榆和紫叶李4种彩叶树种为研究材料,对其在春季转色期的光合色素含量、花色素苷、叶色参数以及细胞液pH值进行了测定分析。结果表明:叶片光合色素含量方面,红叶树种整体色素含量水平均高于2种金叶树种,且二者叶绿素与类胡萝卜素整体含量随时间推移呈现出较为规律的高—低—高变化,金叶树种变化不显著。金叶树种花色素苷含量一直处于平缓下降趋势,而红叶树种花色素苷含量整体呈高—低—高—低的‘M’型走势。除红叶榆叶梅外3种彩叶植物的L*值均在五月初达到最高水平,2种红叶树种a*值也在五月份到达顶峰,而后逐渐下降;2种金叶树种的a*值含量则随时间推移缓慢上升;4种树种的b*值变化与a*值相反。4种彩叶树种的pH最高值均出现在生长初期,随时间推移整体呈下降趋势。春季叶片转色初期金叶树种叶绿素含量低,类胡萝卜素和花色素苷的含量高,在它们共同作用下使金叶树种在生长初期叶片呈现出金黄色;红叶树种生长初期叶绿素、类胡萝卜素合成较低,花色素苷占主导地位,而细胞液pH对花色素苷呈色有促进作用,使叶片呈现出紫红色。

     

    Abstract: Taking 4 color-leafed plants of Acer negundo, Amygdalus triloba, Ulmus pumila and Prunus cerasifera as experimental materials. The variation of photosynthetic pigment contenst, anthocyanin, leaf color parameters and pH value of leaves cytosol during the color changing period in spring were measured and analyzed in this study. The results showed that in terms of leaf photosynthetic pigment content, the total pigment content level of tree species with red leaf was higher than that of 2 tree species with golden leaf, and the total contents of chlorophyll and carotenoid showed regular High-low-high variation over time, but the variation of tree species with golden leaf is in a small range. The anthocyanin content of tree species with golden leaf showed a gentle downward trend, while the anthocyanin content of tree species with red leaf showed a 'M' trend which experienced high-low-high-low variation. The L*values of the 3 color-leaf plants reached the highest level in early May, except A. triloba. The a*values of the 2 trees species with red leaf also reached the peak in May, and then decreased gradually. The a*value of the 2 golden leaf species increased slowly with time. The variation of b*value of 4 tree species was opposite to that of a*. The highest pH value of all the trees species appeared growth in the early stage and then showed a downward trend. In the early stage of spring, the chlorophyll content of the trees with golden leaf was low, while the content of carotenoids and anthocyanins was high. Under their joint action, the leaves of trees with golden leaf showed golden yellow in the early stage. In the early growth stage of trees with red leaf, the synthesis of chlorophyll and carotenoid was low, and anthocyanin was dominant, while the pH value of cell fluid promotes the color of anthocyanin, which made the leaves appear prunosus.

     

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