干旱区生态环境知识资源中心(Arid): 盐分胁迫对骆驼刺幼苗叶片性状的影响

Arid

	盐分胁迫对骆驼刺幼苗叶片性状的影响
其他题名	Effects of salt stress on leaf traits of Alhagi sparsifolia
	赵生龙; 曾凡江; 张波; 刘波; 高欢欢; 罗瀚林
来源期刊	草业科学
ISSN	1001-0629
出版年	2016
卷号	33 期号:9 页码:1770-1778
中文摘要	气候变化与人为干扰使得干旱区盐渍化加剧,引发了严重的生态问题。因此,研究干旱区植物叶片性状对盐胁迫的响应具有重要意义。本研究以当年生的骆驼刺(Alhagi sparsifolia)为研究对象,采用盆栽控制试验,设置不同浓度(50、100、200、400 mmol·L~(-1))的盐处理,分析盐胁迫对骆驼刺叶片性状的影响。结果表明,1)盐胁迫降低了骆驼刺的光合能力,其净光合速率和蒸腾速率显著减小,而水分利用效率则显著增大(P<0.05);其荧光参数F_v/F_0和F_v/F_m在盐处理下均低于对照处理;2)随盐浓度的增大,叶片的比叶面积逐渐减小,其干物质含量则是先减小后增大,且均低于对照;3)随盐浓度增大,单位质量叶片氮含量(N_(mass))和单位面积叶片氮含量(N_(area))先降低后升高再降低,单位质量叶片磷含量(P_(mass))先降低后升高,单位面积叶片磷含量(P_(area))则是先不变后升高,说明骆驼刺对盐分环境有一定的适应性。
英文摘要	Desert region salinization is being accelerated because of climate change and anthropogenic disturbance, resulting in major ecological problems.Studying the leaf traits response of desert species to salt stress is of great importance to understand its adaptation to salinization.A pot experiment were applied to study the effect of different salt concentrations(50,100,200,400 mmol·L~(-1))on leaf traits of Alhagi sparsifoliain the first growing season.The results showed that:(1)Salt stress reduces the photosynthetic capacity of A.sparsifolia,the net photosynthetic rate and transpiration rate were significantly decreased,while water use efficiency is on the rise as salt stress increasing.The fluorescence parameters of F_v/F_0 and F_v/F_min the salt treatment were lower than the control.(2)With the increase of salt stress,the specific leaf area of A.sparsifoliagradually reduced,the leaf dry matter content reduced first and then increased,and all of them were lower than the control.(3)With the increase of salt stress,N_(mass) and N_(area) in leaves declined first and then ascended, and reduced again.P_(mass) decreased first and then increased.However,Parea showed less change first and increased later.These results showed that the A.sparsifoliacould adapt to saline environment morphologically and physiologically.
中文关键词	荒漠区 ; 盐胁迫 ; 骆驼刺 ; 叶片性状 ; 适应策略
英文关键词	Lysimachia davurica drought stress rewatering morphological indicators physiological indices
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5826452
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233986
作者单位	中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室;;新疆策勒荒漠草地生态系统国家野外科学观测实验站;;中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	赵生龙,曾凡江,张波,等. 盐分胁迫对骆驼刺幼苗叶片性状的影响[J]. 中国科学院新疆生态与地理研究所,2016,33(9):1770-1778.
APA	赵生龙,曾凡江,张波,刘波,高欢欢,&罗瀚林.(2016).盐分胁迫对骆驼刺幼苗叶片性状的影响.草业科学,33(9),1770-1778.
MLA	赵生龙,et al."盐分胁迫对骆驼刺幼苗叶片性状的影响".草业科学 33.9(2016):1770-1778.