[1]杨峰,胡景江,武杭菊.外源壳聚糖对苹果幼苗生长及抗旱性的影响[J].西北林学院学报,2007,22(03):60-63.
 YANG Feng,HU Jingjiang,WU Hangju.Effects of Exogenous Chitosan on Growth and Drought Resistance of Apple Seedlings[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2007,22(03):60-63.
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外源壳聚糖对苹果幼苗生长及抗旱性的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第22卷
期数:
2007年03期
页码:
60-63
栏目:
森林生物学
出版日期:
2007-06-30

文章信息/Info

Title:
Effects of Exogenous Chitosan on Growth and Drought Resistance of Apple Seedlings
作者:
杨峰胡景江武杭菊
西北农林科技大学 生命科学学院,陕西 杨陵 712100
Author(s):
YANG Feng HU JingjiangWU Hangju
College of Life Sciences, Northwest A F University, Yangling, Shaanxi 712100, China
关键词:
苹果幼苗壳聚糖 生长抗旱性
Keywords:
apple seedingchitosangrowthdrought resistance
分类号:
S718.43
文献标志码:
A
摘要:
采用盆栽控水的方法研究了干旱条件下壳聚糖(chitosan)对苹果幼苗生长及抗旱性的影响。结果表明在中度干旱条件下,叶面喷施壳聚糖能提高叶绿素含量和光合速率,增强碳素同化能力,促进游离氨基酸、可溶性糖和脯氨酸等有机渗透调节物质的积累,增强渗透调节能力。壳聚糖能维持或提高保护酶(SOD、CAT)活性,防止或降低细胞膜脂过氧化作用,由此维持正常代谢水平,促进植物的生长,提高抗旱性。壳聚糖对苹果幼苗生长及抗旱性的效应与浓度有关,一定浓度范围内,随壳聚糖浓度增加其效应增强,适宜浓度为 100 mg·L-1,再增加浓度其作用效果不再增大。
Abstract:
Effects of exogenous chitosan on growth and drought resistance of the apple seedlings studied under water stress was studied using potculture experiments simulating soil drought status). The results showed that Treated with exogenous chitosan can raise content of chlorophyll and photosynthetic rate and water use efficiency(WUE), and increase content of organic osmotica (Pro, amino acid and sugars) under middle level drought condition. The activity of SOD and CAT decreased and relative permeability of plasma membrane and content of MDA increased under water stress, but treated with exogenous chitosan gave rise to increasing of SOD and CAT activity and decreasing of MDA content and membrane lipid peroxidation under water stress. This indicated that under water stress chitosan can improve photosynthetic function and maintain normal metabolism and promote growth and enhance drought resistace of the apple seedings.

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相似文献/References:

[1]刘彦超,左仲武,胡景江,等.外源多胺对苹果幼苗生长及抗旱性的影响[J].西北林学院学报,2010,25(01):39.

备注/Memo

备注/Memo:
收稿日期:20060510修回日期:20060628基金项目:国家重点基金“西北旱地优质高效栽培技术生理生态研究”(30230230)作者简介:杨峰(1981),男,山西晋城人,硕士研究生,主要从事植物水分与抗性生理研究。*通讯作者:胡景江(1957),男,陕西定边人,教授,主要从事植物逆境生理研究工作。
更新日期/Last Update: 2010-05-04