文献类型：期刊文献

中文题名：顶果木抗旱生理特性研究

英文题名：Study on Physiologic Characteristics in Drought Resistance of Acrocarpus fraxinifolius

作者：郝建[1] 全昭孔[1] 农志[1] 刘志龙[1] 马小峰[2] 郭文福[1]

第一作者：郝建

机构：[1]中国林科院热带林业实验中心;[2]凭祥出入境检验检疫局

年份：2014

卷号：30

期号：1

起止页码：16-19

中文期刊名：中国农学通报

外文期刊名：Chinese Agricultural Science Bulletin

收录：CSTPCD;;CSCD:【CSCD_E2013_2014】；

基金：中国林科院基本科研业务费专项项目"珍贵热带树种种质资源收集与保存"(CAFYBB2011005-8);广西科学研究与技术开发计划项目"广西望天树;顶果木快速繁殖技术研究与示范"(桂科攻10100012)

语种：中文

中文关键词：顶果木;干旱胁迫;耐旱性;生理特性

外文关键词：Acrocarpus fraxinifolius; drought stress; drought tolerance; physiologic characteristics

分类号：S662.2

摘要：为了评价顶果木（Acrocarpus fraxinifolius）的耐旱性,采取模拟自然极度干旱条件方法,利用盆栽方式,研究顶果木在干旱胁迫期间的生理特性。结果表明,在水分胁迫期间,顶果木叶片的叶绿素a、b含量出现先升高后降低的趋势,而类胡萝卜素含量出现增加趋势,叶绿素a的含量明显高于叶绿素b和类胡萝卜素的含量;顶果木叶片的可溶性糖、可溶性蛋白质、游离脯氨酸含量出现先增加后降低的趋势;受水分胁迫的影响,顶果木叶片质膜透性越来越大。干旱胁迫开始在停止供水后的第11~16天的某一天,干旱胁迫的临界土壤含水量在20%左右;第21天顶果木各种生理机能开始丧失,已经达到顶果木的萎蔫系数（12.99%）。
In order to evaluate the drought tolerance of Acrocarpus fraxinifolius,through mimicing natural extreme drought condition,researched the physiologic characteristics of A.fraxinifolius during the period of drought stress on using potting way.The results showed that：during the period of drought stress,the content of chlorophyll a and chlorophyll b of Acrocarpus fraxinifolius increased at first and then decreased,the content of the carotenoid tended to increase,and the of content of chlorophyll a was obviously higher than the chlorophyll b and carotenoid.The content of soluble sugar,soluble protein,free proline appeared trend of increasing first and decreasing afterwards;the plasm membrane permeability of Acrocarpus fraxinifolius appeared to be growing.Therefore,drought stress environment appeared 11thday later,and the critical soil water capacity was 20%.Physiological functions of Acrocarpus fraxinifolius began to lose 21thday later,the soil water capacity of 21thday（12.99%） might have reached the wilting coefficient.