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生态学杂志 ›› 2010, Vol. 29 ›› Issue (08): 1548-1553.

• 研究报告 • 上一篇    下一篇

矮壮素缓解杨梅酸雨胁迫效应

刘建福**,徐泽玮   

  1. 华侨大学生物工程与技术系| 福建厦门 361021
  • 出版日期:2010-08-06 发布日期:2010-08-06

Alleviative effects of chlorocholine chloride on acid rain stress to Myrica rubra cv. Dongkui.

LIU Jian-fu, XU Ze-wei   

  1. Department of Bioengineering, Huaqiao University, Xiamen 361021, Fujian, China
  • Online:2010-08-06 Published:2010-08-06

摘要: 试验对7年生东魁杨梅先进行模拟酸雨(pH 3.5)胁迫处理,1周后喷施矮壮素溶液,研究东魁杨梅花芽孕育期间,矮壮素缓解酸雨胁迫的生理效应。结果表明:酸雨胁迫下喷施低浓度矮壮素有利于提高杨梅叶片SOD、POD和CAT活性,增强细胞清除活性氧能力,缓解膜脂过氧化程度,降低丙二醛含量和质膜相对透性,提高叶片抗酸雨能力;同时,矮壮素可以缓解酸雨胁迫对叶绿体的破坏,低浓度矮壮素显著提高叶绿素和类胡萝卜素含量,增强叶片光合机能,显著提高净光合速率,从而增加花芽分化前期可溶性糖和蛋白质的累积,升高花芽分化后期C/N比值,促进杨梅的成花诱导,提高枝条成花率和座果数。

关键词: 土壤水解酶, 动力学, 特征

Abstract: In this paper, chlorocholine chloride was sprayed on 7-year old Myrica rubra cv. Dongkui after 1-week simulated acid rain (pH 3.5) stress, aimed to study the alleviative effects of chlorocholine chloride on the acid rain stress to the floral bud formation and differentiation of the plant. Spraying low concentration chlorocholine chloride promoted the leaf superoxidase (SOD), peroxidase (POD), and catalase (CAT) activities, alleviated the peroxidation of membrane lipid, decreased the accumulation of malondialdehyde (MDA) and the relative permeability of cell membrane, and thus, enhanced the leaf resistance to acid rain. Meanwhile, chlorocholine chloride eased the degradation of chlorophyll and carotenoid, increased the transpiration, stomatal conductance, and net photosynthetic rate remarkably, and accordingly, increased the leaf soluble protein and sugar contents and promoted the floral bud differentiation and blooming and fruit-setting rates.

Key words: Soil hydrolase, Kinetics, Properties