干旱区生态环境知识资源中心(Arid): 凝结水对盐穗木(Halostachys caspica)叶绿素荧光参数及水分利用效率的影响

Arid

	凝结水对盐穗木(Halostachys caspica)叶绿素荧光参数及水分利用效率的影响
其他题名	Influence of Dew on Fluorescence Parameter and Water Use Efficiency of Halostachys caspica in Different Salinity Habitats
	王恒方 1; 周耀治 1; 秦璐 2; 龚雪伟 1; 吕光辉3
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:5 页码:1124-1132
中文摘要	为明确凝结水对不同盐生境下盐穗木(Halostachys caspica)的生态作用,以生长于不同盐渍化生境(S_0、S_1、S_2)的盐穗木为研究对象,综合分析有凝结水(W_1)和无凝结水(W_0)对盐穗木的叶绿素荧光参数和水分利用效率的影响。结果表明:①W_0处理时,不同盐渍化程度的盐穗木群落的PSII反应中心的激发能捕获效率(Fv’/Fm’)、实际光化学效率(PhiPSII)和电子传递速率(ETR)3个叶绿素荧光参数均显著降低(P<0.05),S_2盐穗木群落的光下最大荧光(Fm’)和非光化学猝灭系数(qN)及S_1盐穗木群落的最小初始荧光(Fo)、暗适应下最大荧光(Fm)、Fm’、最大光化学效率(Fv/Fm)和qN参数也显著降低(P<0.05)。②S_0群落中,W_1可以提高叶片水势,然而W_0处理却降低叶片水势;S_1群落中,W_0和W_1处理时均能提高叶片水势,而W_1处理则能更大的提高植物叶片水势;S_2群落中,W_0和W_1处理均能提高植物叶片水势,而W_0处理能更大的提高植物叶片水势。③不同盐渍化梯度下,W_1和W_0处理时盐穗木净光合速率(Pn)日变化均为单峰曲线。仅S_2盐穗木群落存在不明显的午休现象;S_0和S_1盐穗木群落的Pn日均值W_1和W_0处理时差异显著(P <0.05)。④S_2盐穗木群落的水分利用效率(WUE)在W_1和 W_0处理时均高于S_0和S_1盐穗木群落;W_0处理可以提高S_2盐穗木群落的WUE,降低S_0和S_1盐穗木群落的 WUE。
英文摘要	To evaluate the ecological effect of dew to Halostachys caspica in 3 different salinity habitats,the chlorophyll fluorescence and water use efficiency under presence and absence dew were measuered and analyzed. The results showed that :① In 3 different salinity habitats community of Halostachys caspica,W_0 could significantly reduce theirs Fv’/Fm’ ,PhiPSII and ETR(P <0. 05 ) . In S_2 community of Halostachys caspica W_0 would significantly reduce its Fm’, and qN(P <0. 05 ). In S_1 community of Halostachys caspica W_0 would significantly reduce its Fo, Fm,Fv/Fm,Fm’,and qN(P <0. 05).② In S_0 community,W_1 can improve the leaf water potential,however W_0 treatment decreased leaf water potential ; In S_1 community ,W_1 and W_0 treatment could improve the leaf water potential, W_1 treatment can enhance the plant leaf water potential ; In S_2 community, W_0 and W_1 treatment could improve the leaf water potential of plants, and the treatment of W_0 can enhance the plant leaf water potential.③ The overall performance of the net photosynthetic rate (Pn) of presence and absence dew in 3 different salinity habitats are single-peaked curve. A subtle photosynthetic noon-break phenomenon was only found in S_2 community. The Pn of S_0 and S_1 community is significantly difference between W_0 and W_1 (P<0.05).④ The plant water use efficiency of S_2 community of Halostachys caspica ( WUE) is greater than S_0 and S_1 community of Halostachys caspica. Absence condensation can improve the WUE of S_0 and S_2 Halostachys caspica community, while reduce the WUE of S_1 Halostachys caspica community.
中文关键词	凝结水 ; 盐穗木(Halostachys caspica) ; 叶绿素荧光参数 ; 水分利用效率 ; 干旱区
英文关键词	water Halostachys caspica chlorophyll fluorescence parameter WUE arid area
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:6073536
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236016
作者单位	1.新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国; 2.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国; 3.新疆大学干旱生态环境研究所, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	王恒方,周耀治,秦璐,等. 凝结水对盐穗木(Halostachys caspica)叶绿素荧光参数及水分利用效率的影响[J]. 新疆大学,2017,34(5):1124-1132.
APA	王恒方,周耀治,秦璐,龚雪伟,&吕光辉.(2017).凝结水对盐穗木(Halostachys caspica)叶绿素荧光参数及水分利用效率的影响.干旱区研究,34(5),1124-1132.
MLA	王恒方,et al."凝结水对盐穗木(Halostachys caspica)叶绿素荧光参数及水分利用效率的影响".干旱区研究 34.5(2017):1124-1132.