干旱区生态环境知识资源中心(Arid): 外源钙对干旱胁迫下木豆种苗生理特性的影响

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	外源钙对干旱胁迫下木豆种苗生理特性的影响
其他题名	Effects of Exogenous Calcium on the Physiological Characters of Cajanus cajan under Drought Stress
	陈莹 1; 王普昶 1; 赵丽丽 2; 杨春燕 1; 宋高翔 2
来源期刊	草地学报
ISSN	1007-0435
出版年	2014
卷号	22 期号:5 页码:1051-1055
中文摘要	通过模拟贵州岩溶地区土壤富钙的生境(CK和50 mmol·L~(-1)CaCl_2),以岩溶地区常见饲用灌木木豆(Cajanus cajan)为材料,研究外源钙对干旱胁迫(CK,5%,10%,20%PEG-6000)下木豆种子的萌发率、保护性酶活性(SOD,POD,CAT)及可溶性蛋白质和GSH含量的变化。结果表明:木豆种子萌发随着干旱胁迫的增强而呈显著线性下降趋势(P<0.01),施加外源钙对其无显著影响;随着干旱胁迫的增强保护酶SOD和POD成指数关系,CAT成负二次关系;施加外源钙能显著提高低浓度干旱胁迫下木豆种子SOD和POD活性;可溶性蛋白质和GSH含量随着干旱胁迫的增强呈现指数和二次曲线关系,施加外源钙显著提高了木豆种子可溶性蛋白质和GSH含量(P<0.05)。表明外源钙的施加能缓解木豆种子受到的干旱伤害,提高木豆苗期抗旱性。
英文摘要	The arid environments in the karst area of Guizhou were simulated using exogenous Ca~(2+) (CK and 50 mmol ? L~(-1)) and the different concentrations of PEG 6000 (CK, 5%, 10% and 20%). The effects of exogenous calcium on the seed germination, soluble protein and GSH contents, SOD, POD and CAT activities of Caj anus cajan under different drought stresses were investigated. The results showed that seed germination presented declining tendency with the increase of the PEG concentration (P<0. 01),and there was no significant effect by applying exogenous calcium. SOD and POD activities revealed exponential changes (P<0. 01),and CAT activity, soluble protein and GSH contents presented negative quadratic curve with the increase of drought stress. Exogenous calcium significantly improved soluble protein and GSH contents (P<0. 05). The experimental results show that exogenous calcium can alleviate damage from drought stress and improve the drought resistance of C. cajan.
中文关键词	外源钙 ; 干旱胁迫 ; 木豆 ; 生理特性
英文关键词	Exogenous calcium Drought stress Cajanus cajan Physiological characters
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:5302132
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230826
作者单位	1.贵州省草业研究所, 贵阳, 贵州 550006, 中国; 2.贵州大学动物科学学院, 贵阳, 贵州 550025, 中国
推荐引用方式 GB/T 7714	陈莹,王普昶,赵丽丽,等. 外源钙对干旱胁迫下木豆种苗生理特性的影响[J],2014,22(5):1051-1055.
APA	陈莹,王普昶,赵丽丽,杨春燕,&宋高翔.(2014).外源钙对干旱胁迫下木豆种苗生理特性的影响.草地学报,22(5),1051-1055.
MLA	陈莹,et al."外源钙对干旱胁迫下木豆种苗生理特性的影响".草地学报 22.5(2014):1051-1055.