干旱区生态环境知识资源中心(Arid): 3种滨藜属植物幼苗叶片对NaCl胁迫的生理响应

Arid

	3种滨藜属植物幼苗叶片对NaCl胁迫的生理响应
其他题名	Leaf physiological characteristics of seedlings of three Atriplex species under NaCl stress
	党晓宏 1; 高永1 ; 蒙仲举 1; 包蕾 2; 王珊 1; 高君亮 3; 余新春 3; 王祯仪 1
来源期刊	北京林业大学学报
ISSN	1000-1522
出版年	2016
卷号	38 期号:10 页码:38-49
中文摘要	以灰白滨藜变种1、灰白滨藜变种2和四翅滨藜的1年生实生幼苗为试验材料,采用沙土盆栽试验,对不同质量浓度(0、0.1%、0.3%、0.5%、0.7%和1.0%)NaCl单盐胁迫条件下3种滨藜属植物幼苗叶片盐害指数、耐盐阈值及生理特性等指标进行了测定。结果表明:盐胁迫提高了3种滨藜属植物幼苗各器官Na~+浓度,降低了K~+浓度,灰白滨藜变种2较其他2种植物各器官保持了相对较低的Na~+和较高K~+浓度,有利于维持较高的K~+/Na~+平衡;随着土壤盐浓度的增加,灰白滨藜变种2叶片受盐害起始浓度、耐盐阈值及耐盐极限浓度均高于灰白滨藜变种1和四翅滨藜,最终确定出灰白滨藜变种1、灰白滨藜变种2和四翅滨藜的耐盐阈值分别为0.59%、0.68%和0.63%;叶片丙二醛含量、细胞膜相对透性随着盐胁迫程度的加剧而增加。经隶属函数综合评价认为3种滨藜属植物耐盐性强弱顺序依次为:灰白滨藜变种2(0.686)>四翅滨藜(0.532)>灰白滨藜变种1(0.102);与灰白滨藜变种1相比,灰白滨藜变种2和四翅滨藜各项生理指标特征对盐土环境的适应能力更强。
英文摘要	Atriplex species, such as Atriplex canescens ssp. aptera, A. canescens ssp. canescens var. laciniata and A. canescens, as unique quasi-evergreen shrubs in arid and semi-arid desert area, are of high socio-ecological importance in controlling desertification, improving soil quality in saline land, and supporting local ecological balance. Here we measured salt injury index, salt-tolerant thresholds and physiological characteristics of the first-year seedlings by a salt-stress experiment conducted in pots. In the experiment, the pots were filled with sand and the six salt levels were adjusted to 0, 0.1%, 0.3%, 0.5%, 0.7%, and 1.0% NaCl. The results showed that: 1) Na~+ increased and K~+ decreased in each part of three Atriplex seedlings under salt stress. Compared with A. canescens ssp. aptera and A. canescens, the relatively lower Na~+ and higher K~+ contents were retained in each part of A. canescens ssp. canescens var. laciniata, which was conducive to keeping higher K~+/Na~+ balance. 2) The initial NaCl concentration with salt stress, salt-tolerance threshold and salt concentration limit of A. canescens ssp. canescens var. laciniata were higher than the other two plants. 3) The salt-tolerance thresholds of A. canescens ssp. aptera, A. canescens ssp. canescens var. laciniata and A. canescens were 0.59%, 0.68%, and 0.63%, respectively. 4) With salt stress increasing, MDA content and cytomembrane permeability were consistently increasing. 5) The salt-tolerance thresholds of the three species based on subordinate function comprehensive evaluation were in the order of A. canescens ssp. canescens var. laciniata (0.686)>A. canescens (0.532)>A. canescens ssp. aptera (0.102). It is suggested that A. canescens ssp. canescens var. laciniata has a stronger adaptability to saline soil than A. canescens and A. canescens ssp. aptera.
中文关键词	耐盐性 ; NaCl胁迫 ; 苗期 ; 生理响应 ; 滨藜属植物
英文关键词	salt tolerance NaCl stress seedling stage physiological response Atriplex species
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5837165
来源机构	内蒙古农业大学 ; 中国林业科学研究院沙漠林业实验中心
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233907
作者单位	1.内蒙古农业大学沙漠学院, 中央与地方共建风沙物理重点实验室; 2.通辽市城乡规划技术管理中心; 3.中国林业科学研究院沙漠林业实验中心
推荐引用方式 GB/T 7714	党晓宏,高永,蒙仲举,等. 3种滨藜属植物幼苗叶片对NaCl胁迫的生理响应[J]. 内蒙古农业大学, 中国林业科学研究院沙漠林业实验中心,2016,38(10):38-49.
APA	党晓宏.,高永.,蒙仲举.,包蕾.,王珊.,...&王祯仪.(2016).3种滨藜属植物幼苗叶片对NaCl胁迫的生理响应.北京林业大学学报,38(10),38-49.
MLA	党晓宏,et al."3种滨藜属植物幼苗叶片对NaCl胁迫的生理响应".北京林业大学学报 38.10(2016):38-49.