文献类型：期刊文献

中文题名：不同年龄沙地柏生理生态特性差异研究

英文题名：Comparison on Several Physiological Characteristics in Sabina vulgaris Seedlings of Different Ages

作者：刘建锋[1] 赵秀莲[1] 江泽平[1]

第一作者：刘建锋

机构：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室

年份：2011

卷号：26

期号：3

起止页码：17-20

中文期刊名：西北林学院学报

外文期刊名：Journal of Northwest Forestry University

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：国家林业局"948"项目"杂交柏优良种质材料及培育技术的引进"(2006-4-55)

语种：中文

中文关键词：沙地柏;不同年龄;生理生态

外文关键词：Sabina vulgaris ; different age; eco-physiological characteristic

分类号：S718.43

摘要：在正常供水条件下,对1、3、5 a生沙地柏的生理指标进行了研究,结果表明:叶保水力、细胞膜透性、水分利用效率、羧化效率在各年龄段间差异显著(p<0.05)。随着苗龄的增加,沙地柏枝叶保水力逐渐增强;而细胞膜透性和羧化效率表现出降低的趋势。瞬时水分利用效率以3 a生沙地柏最高。净光合速率、蒸腾速率、气孔导度和表观量子效率等指标在各年龄段间无显著差异,表明正常供水条件下,3个年龄的沙地柏幼苗的光合物质积累差异不显著。
In this paper, under normal soil water conditions, several eco-physiological indicators were inves- tigated on Sabina vulgaris seedlings with three different ages, 1-year, 3-year and 5-year. The results showed that： leaf water holding ability, membrane permeability, water use efficiency and carboxylation ef- ficiency among groups were significantly different （P^0.05）. With the growth of the seedlings, the leaf water holding ability gradually increased, but membrane permeability and carboxylation efficiency showed a decreasing trend. Instantaneous water use efficiency of 3-year seedlings was the highest. Net photosyn thetic rates, transpiration rate, stomatal conductance, and apparent quantum efficiency were similar in all age groups with no significant difference. So under the normal water supply conditions, matter accumulation in the selected three age seedlings did not show manifesting differences.