干旱区生态环境知识资源中心(Arid): 盐分、干旱及其交互胁迫对黑果枸杞发芽的影响

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	盐分、干旱及其交互胁迫对黑果枸杞发芽的影响
其他题名	Salt and Drought Stress Effect and Their Interaction on Germination of Lycium ruthenicum Murr.
	宗莉 1; 甘霖 2; 康玉茹 1; 王爱勤 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2015
卷号	32 期号:3 页码:499-503
中文摘要	为了研究土壤盐分和水分对黑果枸杞(Lycium ruthenicum Murr.)萌发的影响,通过单因素等渗试验测定了PEG处理和NaCl处理对发芽率的影响。结果表明:黑果枸杞种子在水分胁迫下的临界值和极限值分别为-0.39 MPa和-0.75 MPa,而在盐分胁迫下分别为-0.46 MPa和-0.8 MPa。以水分胁迫、NaCl胁迫和发芽温度为试验因子,以种子萌发率为响应值,运用中心组合试验设计(CCD)法,进行3因素5水平的响应面(RSM)分析试验。结果表明:3个因素对黑果枸杞种子发芽率的影响为:PEG>NaCl>温度。试验结果表明:黑果枸杞在盐分和干旱双重胁迫下,极限耐受值范围为干旱胁迫-0.3~-0.5 MPa,盐分胁迫-0.6~-0.7 MPa。
英文摘要	Seed germination period is the weakest link of resistance in life cycle of plant,which determines some plants survive in the drought,saline environment or not. In arid and semiarid regions,soil salinization has stress effect on seed germination,temperature and moisture was two key ecological factors affecting the seed germination additionally. To study the influences of salt concentration and moisture content in the soil profile on seeds germination of Lycium ruthenicum Murr.,the germination of seeds was measured under iso-osmotic potentials of NaCl and PEG processing. The regression equation and result showed that the seed critical value was-0.39 MPa and maximum value was-0.75 MPa under PEG treatment,while they were-0.46 MPa and-0.8 MPa under NaCl treatment. Based on central composite design response surface methodology,germination percentage was investigated with respect to PEG,NaCl solution and temperature,and a quadratic polynomial model was established. According to the results,the influence on germination from strong to inferior is PEG,NaCl and temperature. Comprehensive result show that seeds of Lycium ruthenicum Murr. under salt and drought stress,the limited parameters were water stress,- 0.3-0.5 MPa,and NaCl stress,- 0.6-0.7 MPa. Comparing the seed germination response of single stress and double stress,discussing the adaptive strategy of Lycium ruthenicum Murr. ,will provide a scientific basis for vegetation restoration and reconstruction in desert region.
中文关键词	黑果枸杞(Lycium ruthenicum Murr.) ; 等渗胁迫 ; 盐分胁迫 ; 干旱胁迫 ; 曲面响应法
英文关键词	Lycium ruthenicum Murr. iso-osmotic stress salt stress drought stress response surface methodology
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5433754
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232716
作者单位	1.中国科学院兰州化学物理研究所环境与生态化学发展中心, 兰州, 甘肃 730000, 中国; 2.阿拉善盟科技信息研究所, 阿拉善左盟, 内蒙古 750306, 中国
推荐引用方式 GB/T 7714	宗莉,甘霖,康玉茹,等. 盐分、干旱及其交互胁迫对黑果枸杞发芽的影响[J],2015,32(3):499-503.
APA	宗莉,甘霖,康玉茹,&王爱勤.(2015).盐分、干旱及其交互胁迫对黑果枸杞发芽的影响.干旱区研究,32(3),499-503.
MLA	宗莉,et al."盐分、干旱及其交互胁迫对黑果枸杞发芽的影响".干旱区研究 32.3(2015):499-503.