中华金叶榆复绿过程中叶片呈色变化及其相关生理指标分析  

The Coloring and Physiological index During the Regreening of Ulmus pumila‘Jinye’

作　　者：胡亚梅 徐蓓萱 荆亚楠 杨姚倩 代嵩华 张国君[1] HU Yamei;Xu Beixuan;JING Yanan;YANG Yaoqian;DAI Songhua;ZHANG Guojun(College of Horticultural Science&Technology/Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization/Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066000,China)

机构地区：[1]河北科技师范学院园艺科技学院/河北省特色园艺种质挖掘与创新利用重点实验室/河北省高校特色园艺植物生物育种应用技术研发中心,河北秦皇岛066000

出　　处：《河北科技师范学院学报》2024年第3期16-21,共6页Journal of Hebei Normal University of Science & Technology

基　　金：河北省重点研发计划项目现代种业科技创新专项(项目编号:21326301D);河北省现代农业产业技术体系建设专项资金(项目编号:HBCT2024200202):河北科技师范学院研究生创新资助项目(项目编号:CXZZ202303);河北省级专业学位研究生培养实践基地项目(项目编号:202018)。

摘　　要：为探讨中华金叶榆叶片复绿过程中叶片呈色变化及其相关生理指标,以河北科技师范学院昌黎校区内自然条件下生长的不同方向及不同时期的金叶榆叶片为试验材料,对不同时期(S1,金色;S2~S5,黄绿色;S6,绿色)和4个方向(东、南、西、北)的叶片颜色进行对比,发现不同时期对金叶榆叶色变化影响显著,不同方向对金叶榆叶色没有影响。根据比色卡的对比结果和叶色参数,挑选出金叶榆复绿的S1、S5和S6等3个关键时期,并测定这3个关键时期叶片的叶绿素、类胡萝卜素、花色素苷的质量分数。结果表明,金叶榆复绿与花色素苷的质量分数无关,与叶绿素和类胡萝卜素的质量分数有关,且金叶榆由金色复绿为绿色的过程中叶绿素与类胡萝卜素的质量分数升高比例发生变化。为进一步探究金叶榆复绿过程中呈色变化的相关生理指标,对这3个关键时期叶片进行光合速率、可溶性糖质量分数、pH测定,发现金叶榆叶片呈色与pH无关,且光合速率在S5时期最高,可溶性糖质量分数在S5时期最低。说明金叶榆由金色复绿为绿色是由于叶绿素和类胡萝卜素质量分数增加,比例发生变化而引起的,且S5时期是金叶榆复绿的关键时期。Taking Ulmus.pumila‘Jinye’leaves of different leaf color periods and different directions growing under natural conditions as experimental materials,the leaf colors of different leaf color periods(S1,Golden;S2~S5,Yellowgreen;S6,Green)and four directions(east,south,west,and north)was compared to study the coloring and physiological index during the regreening of Ulmus pumila‘Jinye’.The result showed that periods had a significant impact on the color change of U.pumila‘Jinye’,while directions had not.Mass fractions of chlorophyll,carotenoids,and anthocyanin glycosides were determined at the regreening stages(S1,S5,and S6)based on the changes in leaf color of U.pumila‘Jinye’.The results showed that the mass fractions of chlorophyll and carotenoids had effect on the regreening of Ulmus pumila‘Jinye’,while anthocyanin glycosides had not,and the mass fractions of chlorophyll and carotenoids increased during the regreening of Ulmus pumila‘Jinye’.The photosynthetic rate,the soluble sugar content and the pH were determined to study the physiological index of the regreening of Ulmus pumila‘Jinye’.The studies showed that the photosynthetic rate was highest and the soluble sugar content is lowest during the S5.These results indicating that the regreening of Ulmus pumila‘Jinye’was caused by the increased mass fractions of chlorophyll and carotenoids,and S5was the crucial period.

关 键 词：金叶榆 叶绿素 类胡萝卜素 生理生化 

分 类 号：S722.3[农业科学—林木遗传育种]