文献类型：期刊文献

中文题名：NaCl胁迫对薄壳山核桃幼苗生长及光合生理特性的影响

英文题名：Effects of Salt Stress on Growth and Photosynthetic Characteristics of Carya Illinoemis

作者：赵靖明[1,2] 孙凡[1] 姚小华[2] 常君[2] 王开良[2]

第一作者：赵靖明

机构：[1]西南大学资源环境学院,重庆400716;[2]中国林业科学研究院亚热带林业研究所,浙江富阳311400

年份：2012

期号：12

起止页码：93-97

中文期刊名：西南师范大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：林业公益性行业科研专项基金资助项目《薄壳山核桃良种筛选与配置技术研究与示范》(201204404);浙江省省院合作林业科技基金资助项目《薄壳山核桃品种配置技术研究》(2011SY09)

语种：中文

中文关键词：NaCl胁迫;薄壳山核桃;生长;光合作用

外文关键词：salt stress;Carya illinoensis;growth;photosynthesis

分类号：Q949.735

摘要：采用1年生薄壳山核桃实生苗为研究材料,以盆栽加盐的方式来人工模拟盐胁迫环境,设置0(对照,不加NaCl),0.1%,0.2%,0.3%,0.4%,0.5%,0.6%,0.7%和0.8%共9个盐梯度,研究在不同盐梯度下薄壳山核桃幼苗的存活率、生长量(相对苗高生长、相对地茎生长、相对鲜质量、相对干质量)以及光合生理特性.结果表明:①0.1%NaCl对薄壳山核桃幼苗生长量和光合作用没有显著影响;②当NaCl质量分数超过0.2%时,随着NaCl质量分数的增大,薄壳山核桃幼苗的生长量和光合作用显著下降;③当NaCl质量分数超过0.7%时,薄壳山核桃幼苗的生长几乎停滞,光合作用极其微弱,存活率低于22.2%.④低质量分数(NaCl质量分数低于0.4%)限制光合速率主要是气孔限制因素,高质量分数(NaCl>0.4%)主要是非气孔限制因素.
The potted one-year old seedlings of Carya illinoensis have been used to study the effect of salt stress on growth and photosynthetic characteristics.And the growth,survival rate and photosynthesis are determined by the treatment of different NaCl concentration with 0,0.1%,0.2%,0.3%,0.4%,0.5%,0.6%,0.7% and 0.8%,respectively.The results show that there is no significant effect of 0.1% NaCl concentration on the growth and photosynthesis of Carya illinoensis seedlings.While the growth and photosynthesis are significantly decreased when the NaCl concentration was over 0.2%,and the higher the NaCl concentration is,the lower the growth and photosynthesis show.The growth of pecan seedlings almost ceased and the photosynthesis became quite weak under the treatment of NaCl concentration over 0.7%.And the survival rate dropped to 22.2%,even lower.In addition,the stomatal limitation might be the main factor restricted the photosynthesis under the treatment of lower NaCl concentration(≤0.4%),while the higher NaCl concentration(>0.4%) affected the photosynthesis usually by non-stomatal limitation factor.