干旱区生态环境知识资源中心(Arid): 模拟干旱与盐胁迫对半枝莲种子萌发的影响

Arid

	模拟干旱与盐胁迫对半枝莲种子萌发的影响
其他题名	Effect of simulated drought stress and salt stress on seed germination of Scutellaria barbata
	赵杏锁; 孙海博; 刘一心; 和建云; 董娇; 杨秀云
来源期刊	草业科学
ISSN	1001-0629
出版年	2018
卷号	35 期号:6 页码:1496-1502
中文摘要	以半枝莲(Scutellaria barbata)种子为试验材料,研究干旱和盐胁迫对种子萌发和幼苗生长状况的影响。采用聚乙二醇(PEG)模拟干旱胁迫,NaCl、Na_2SO_4、MgCl_2、复合盐(2NaCl+Na_2SO_4)溶液模拟盐胁迫。结果表明,1)干旱胁迫下,5%、10%浓度对种子萌发和幼苗生长影响不大,15%、20%浓度对种子萌发和幼苗生长有显著的抑制作用(P< 0.05),25%浓度处理下的种子没有萌发。2)盐胁迫下Na_2SO_4、复合盐处理组的发芽率、发芽指数在浓度为0~0.3%时降低,0.3%~0.6%升高,高于0.6%呈降低趋势;NaCl、MgCl_2盐胁迫下,发芽率、发芽指数与盐浓度呈负相关关系; NaCl盐胁迫下,幼苗无法生长;幼苗叶面积与Na_2SO_4、MgCl_2、复合盐浓度呈负相关关系;胚芽长在0.3%浓度 Na_2SO_4、MgCl_2和复合盐受到促进作用,在浓度高于0.6%时受到抑制作用;胚根长在Na_2SO_4、MgCl_2盐胁迫下随浓度的升高而降低,复合盐胁迫下随浓度的升高呈先升后降的趋势。干旱和盐胁迫对半枝莲种子萌发和幼苗生长的各项指标影响不同。
英文摘要	Scutellaria barbata seeds were used as an experimental model to study the effects of drought and salt stress on seed germination and seedling growth.Polyethylene glycol(PEG)was used to simulate drought stress,and mixed solutions of NaCl,Na_2SO_4,MgCl_2,and(2NaCl+Na_2SO_4)was used to simulate salt stress. The results show that:1)Draught stress induced by 5%and 10%PEG solutions did not cause an effect on seed germination and seedling growth,but the 15% and 20% PEG solutions had significant inhibitory effects on seed germination and seedling growth(P<0.05),and the seeds did not germinate under stress induced by 25% PEG treatment.2)Under salt stress,with increasing concentrations of Na_2SO_4 the germination rate and germination index showed afall-rise-falltrend.With NaCl+MgCl_2 salt stress,germination rate and germination index were negatively correlated with salt concentration.With NaCl salt stress,seedings did not grow.The seedling leaf area showed a negative correlation with the concentration of a Na_2SO_4+MgCl_2 composite salt solution. A 0.3%concentration of Na_2SO_4,MgCl_2,and compound salt showed a germination promoting effect, while concentrations higher than 0.6% had an inhibitory effect.Radicle length under the Na_2SO_4,MgCl_2 salt stress,reduced with the increase of concentration;with the increase of composite salt concentration radicle length presented arise-falltrend.These indicators of S.barbata seed germination and seedling growth showed different effects of drought and salt stress on seed germination and seedling growth.
中文关键词	园林地被植物 ; 半枝莲 ; 干旱与半干旱地区 ; 盐胁迫 ; 种子萌发 ; 幼苗生长
英文关键词	PEG landscape cover plant Scutellaria barbata arid and semi-arid regions polyethylene glycol salt stress seed germination seedling growth
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:6275339
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237331
作者单位	赵杏锁, 山西农业大学林学院, 太谷, 山西 030801, 中国.; 孙海博, 山西农业大学林学院, 太谷, 山西 030801, 中国.; 刘一心, 山西农业大学林学院, 太谷, 山西 030801, 中国.; 和建云, 山西农业大学林学院, 太谷, 山西 030801, 中国.; 董娇, 山西农业大学林学院, 太谷, 山西 030801, 中国.; 杨秀云, 山西农业大学林学院, 太谷, 山西 030801, 中国.
推荐引用方式 GB/T 7714	赵杏锁,孙海博,刘一心,等. 模拟干旱与盐胁迫对半枝莲种子萌发的影响[J],2018,35(6):1496-1502.
APA	赵杏锁,孙海博,刘一心,和建云,董娇,&杨秀云.(2018).模拟干旱与盐胁迫对半枝莲种子萌发的影响.草业科学,35(6),1496-1502.
MLA	赵杏锁,et al."模拟干旱与盐胁迫对半枝莲种子萌发的影响".草业科学 35.6(2018):1496-1502.