《植物生理学报》 2018, 54(1): 127-132

叶面喷施水杨酸对3种色系榉树秋季叶片呈色的影响

张亚平^1,2, 曾艳¹, 刘晓玲¹, 邢文¹, 金晓玲^1,*

¹中南林业科技大学风景园林学院, 长沙410004; ²贵州农业职业学院农艺工程系, 贵阳551400

通信作者：金晓玲；E-mail: jxl0716@hotmail.com

摘　要：

以秋季转色期叶色表现为红色、黄色、绿色的3种色系榉树叶片为材料, 通过不同浓度水杨酸叶面喷施处理, 测定并分析其叶片的颜色参数及花青素、叶绿素等色素含量的变化。结果表明: 喷施0.5 mmol·L^-1水杨酸能促进红色系榉树叶片花青素的合成, 加速其叶绿素的降解, 加深叶片红色程度; 喷施0.5 mmol·L^-1水杨酸延长黄色系榉树的绿色期, 推迟变色期; 喷施1.0 mmol·L^-1水杨酸能使黄色、绿色系榉树叶片变黄, 提前变色期。

关键词：榉树; 水杨酸; 叶色; CIEL*a*b*

收稿：2017-06-05   修定：2017-11-28

资助：中央财政林业科技推广项目([2015]XT008)、国家林业局重点学科资助项目(林人发[2016]21号)和湖南省“十二五”重点学科(风景园林学) (湘教发[2011]76号)。

Effects of foliage spray of salicylic acid on leaf color in three leaf-color types of Zelkova schneideriana in autumn

ZHANG Ya-Ping^1,2, ZENG Yan¹, LIU Xiao-Ling¹, XING Wen¹, JIN Xiao-Ling^1,*

¹College of Landscape Architecture, Central South University of Forestry and Technology, Changsha 410004, China; ²Department of Agricultural Engineering, Guizhou Vocational College of Agriculture, Guiyang 551400, China

Corresponding author: JIN Xiao-Ling; E-mail: jxl0716@hotmail.com

Abstract:

Using foliar spray of different concentrations of salicylic acid, we analyzed the pigments composition and the contents of anthocyanin and chlorophyll in three different leaf color (red, yellow or green) types of Zelkova schneideriana. The results showed that in red leaf type of Z. schneideriana, 0.5 mmol·L^-1 SA could promote the anthocyanin synthesis, accelerate the degradation of chlorophyll, and enhance red degree of leaves. And in yellow leaf type of Z. schneideriana, 0.5 mmol·L^-1 SA prolonged the green period and delayed leaf color change. 1.0 mmol·L^-1 SA could make leaves turn yellow, the color phase in advance in both yellow and green types of Z. schneideriana.

Key words: Zelkova schneideriana; salicylic acid; leaf color; CIEL*a*b*