中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 干旱胁迫对台湾栾树幼苗生长和生理生化指标的影响 中国水土保持科学 2014,12 (5) 52-56
Position: Home > Articles > Effects of drought stress on the growth and physiological and biochemical characteristics of Koelreuteria elegans seedlings Science of Soil and Water Conservation 2014,12 (5) 52-56

干旱胁迫对台湾栾树幼苗生长和生理生化指标的影响

作  者：
林武星;黄雍容;朱炜;聂森
单  位：
福建省林业科学研究院
关键词：
台湾栾树;干旱胁迫;生长;生理生化指标
摘  要：
采用称量控水方法,设置正常供水(CK)、轻度干旱胁迫(LD)、中度干旱胁迫(MD)和重度干旱胁迫(SD)4种水分处理,研究不同程度干旱胁迫对1年生台湾栾树盆栽苗生长和生理生化指标的影响,探讨台湾栾树耐旱机制。研究发现:随干旱胁迫程度的加剧,台湾栾树幼苗高生长量和生物量逐渐降低,但根冠比显著提高;台湾栾树幼苗叶丙二醛浓度、可溶性糖及脯氨酸质量分数增加,K+和Ca2+质量分数在LD处理略有升高后缓慢下降,Mg2+质量分数则只有轻微减少;而叶可溶性蛋白质质量分数及CAT、POD、SOD、APX等活性表现为先增加后降低的规律,且在MD处理均达到最大。结果表明:干旱胁迫下台湾栾树膜脂过氧化加剧和生长受到抑制,但其能通过提高抗氧化酶系统的活性和积累可溶性糖、脯氨酸及可溶性蛋白质等渗透调节物质来保护膜结构,使其保持正常的生理活动,从而表现出较强的抗旱能力。
译  名：
Effects of drought stress on the growth and physiological and biochemical characteristics of Koelreuteria elegans seedlings
作  者：
Lin Wuxing;Huang Yongrong;Zhu Wei;Nie Sen;Fujian Academy of Forestry;
关键词：
Koelreuteria elegans;;drought stress;;growth;;physiological and biochemical characteristics
摘  要：
Controlled by weighing the soil and pots,one-year-old Koelreuteria elegans seedlings were potted under four levels of drought stress including optimal water content( CK),mild drought stress( LD),moderate drought stress( MD) and severe drought stress( SD) to study the growth and physiological and biochemical characteristics under drought stress. The mechanism of drought-tolerance in K. elegans was discussed. The results showed that the height and biomass of the seedlings decreased significantly but the root /shoot biomass ratio increased obviously,and the contents of MDA,soluble sugar and proline added up; the contents of K+and Ca2 +had a slight increase in the treatment of LD and then slowly decreased,while the content of Mg2 +in leaves had no obvious difference at four levels of drought stress,while the content of protein and activity of CAT,POD,SOD and APX,which were the biggest at the level of MD,increased firstly and then decreased with drought stress becoming more severe. The above results indicated that the drought stress leads to more serious peroxidation of membrane of K.elegans,which inhibited its growth. However,K. elegans could protect its membrane structure and keep normal physiological activities through improving the activity of antioxidant enzymes system and accumulating osmotic regulators such as soluble sugar,proline and soluble protein,which leads to the good performance of K. elegans to tolerate drought.

相似文章

导出引用
计量
文章访问数: 20
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46