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Effect of Copper Ion Concentration on Physiological and Biochemical Characteristics of Loropetalum Chinense var.rubrum
Author(s): LI Yan-lin, TANG Qian-rui, ZHANG Hong-zhi, LI Da, XIONG Xing-yao, YU Xiao-ying
Pages: 65-
68
Year: 2009
Issue:
1
Journal: Nonwood Forest Research
Keyword: 经济林; 红檵木; Cu2+浓度; 生理生化特性;
Abstract: 采用沙培法研究了不同浓度Cu2+对红橙木生理生化特性的影响.结果表明:不同浓度的cu2+对红檵木叶片中叶绿素、类胡萝卜素、花色素苷、脯氨酸和MDA含量等生理生化指标的影响均达到极显著水平;当Cu2+浓度介于0~5.207 9×10一stool·L-1之间时.随Cuz2+浓度增加,色索类含量增加,SOD酶活性提高,膜质过氧化作用减小;当Cu2+浓度超过5.207 9×10-8tool·L-1时,随着Cu2+浓度增加.色素类、可溶性糖含量及SOD酶活性降低,而膜质过氧化作用、相对电导率、MDA、脯氨酸和可溶性蛋白的含量增加.同时幼叶生长明显减弱,成熟叶也由鲜艳的亮紫红色渐渐变为浅红色或淡黄色,失去原有的光泽.
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