干旱区生态环境知识资源中心(Arid): 杨柴种子萌发对环境因子的响应研究

Arid

	杨柴种子萌发对环境因子的响应研究
其他题名	Response of seed germination of Hedysarum leave to environmental factors
	王志恒; 杨秀柳; 胡韩; 徐中伟; 周吴艳; 黄思麒; 帕提古丽·热合曼; 魏玉清
来源期刊	西北农林科技大学学报. 自然科学版
ISSN	1671-9387
出版年	2021
卷号	49 期号:9 页码:99-109
中文摘要	【目的】阐明光照和温度、土壤含水量和沙埋深度、渗透势及盐碱环境等因子对杨柴种子萌发的影响特征,为提高其飞播种子萌发率提供依据。【方法】在室内控制条件下,设置2个光照和5个变温复合处理、5个土壤含水量和6个沙埋深度复合处理以及各11个干旱胁迫、NaCl和NaHCO_3处理,研究杨柴种子萌发对光照和温度、土壤含水量和沙埋深度以及干旱、盐碱胁迫的响应。【结果】黑暗环境对杨柴种子萌发具有促进作用,20~30 ℃下,杨柴种子萌发快速且集中;光照条件下30/25 ℃为杨柴种子的最适萌发温度,黑暗条件下25/20 ℃为杨柴种子的最适萌发温度。5%和10%土壤含水量条件下,杨柴种子沙埋深度为1 cm时萌发情况最好,土壤含水量与沙埋深度呈现显著负互作效应。渗透势为-0.30~0 MPa时种子发芽率均高于80%,渗透势为-0.50 MPa时发芽率低于20%;NaCl水平在0~0.6%时种子发芽率超过70%,当其水平为2.0%时发芽率显著下降,仅为20%;NaHCO_3水平在0~0.08%时种子发芽率超过70%,0.24%水平下发芽率低于20%。【结论】杨柴种子萌发阶段对温度较为敏感,黑暗环境对杨柴种子萌发具有促进作用,20~30 ℃下种子萌发快速且集中。适宜土壤含水量条件下,沙埋深度为1 cm时萌发情况较好;杨柴种子萌发对碱性盐胁迫的敏感程度高于干旱胁迫和中性盐胁迫。
英文摘要	【Objective】 In order to improve seed germination of Hedysarum leave in desert area,influences of light,temperature,soil water content,sand depth,osmotic potential and saline-alkali environment on seed germination were explored in the experiment.【Method】 The characteristics and responses of H.leave seed germination to light,temperature,soil water content,sand depths,drought,NaCl and NaHCO_3 were studied.The treatments included compound treatments of 2 light levels and 5 temperature levels,compound treatments of 5 soil water contents and 6 sand depths,and single treatments of drought,light and temperature,and drought,NaCl and NaHCO_3 at 11 levels to study responses and interaction effect on seed germination of H.leave.【Result】 Continuous darkness promoted germination of H.leave seeds.H.leave seeds germinated quickly and concentratedly at 20-30 ℃.The optimal germination temperature was 30/25 ℃ in normal light group and 25/20 ℃ in continuous darkness group.With 5% and 10% soil water contents,the germination was better when seed buried depth was 1 cm,and there was a significant negative interaction effect between buried depth and soil water content.When osmotic potential was-0.30-0 MPa,the germination rate was higher than 80%.When osmotic potential was-0.50 MPa,the germination rate was lower than 20%.The seed germination rate was over 70% when NaCl levels were 0-0.6%,it significantly decreased to 20% when NaCl level was 2.0%.The germination rate of seeds was more than 70% when NaHCO_3 was within 0-0.08%,and it was less than 20% at 0.24%.【Conclusion】 H.leave was sensitive to temperature in seed germination stage.Continuous darkness promoted seed germination and it was rapid and concentrated at 20-30 ℃.The germination was better when sand depth was 1 cm with suitable soil water content.The sensitivity to alkaline salt stress was higher than that to drought stress and neutral salt stress.
中文关键词	杨柴 ; 种子萌发 ; 环境因子 ; 逆境胁迫
英文关键词	Hedysarum leave seed germination environmental factors stress of adversity
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:7042365
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377988
作者单位	王志恒, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 杨秀柳, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 胡韩, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 徐中伟, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 周吴艳, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 黄思麒, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 帕提古丽·热合曼, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.; 魏玉清, 北方民族大学生物科学与工程学院, 国家民委生态系统模型及应用重点实验室, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	王志恒,杨秀柳,胡韩,等. 杨柴种子萌发对环境因子的响应研究[J],2021,49(9):99-109.
APA	王志恒.,杨秀柳.,胡韩.,徐中伟.,周吴艳.,...&魏玉清.(2021).杨柴种子萌发对环境因子的响应研究.西北农林科技大学学报. 自然科学版,49(9),99-109.
MLA	王志恒,et al."杨柴种子萌发对环境因子的响应研究".西北农林科技大学学报. 自然科学版 49.9(2021):99-109.