干旱区生态环境知识资源中心(Arid): PEG模拟干旱胁迫下5种紫花苜蓿萌发期抗旱性的评估

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	PEG模拟干旱胁迫下5种紫花苜蓿萌发期抗旱性的评估
其他题名	Drought resistance of 5 alfalfa species at germination period under PEG simulated drought stress
	程波; 胡生荣; 高永; 樊璐; 翟波; 刘湘杰; 张慧敏
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	2019
卷号	47 期号:1 页码:53-59
中文摘要	【目的】分析5种紫花苜蓿种子萌发期的抗旱性,以选育适合在内蒙古半干旱地区种植的紫花苜蓿品种。【方法】以内蒙古半干旱地区常用的5个紫花苜蓿品种(金皇后、中苜一号、阿尔冈金、威尔纳、冰驰)种子为材料,利用不同渗透势的PEG-6000溶液(0,-0.03,-0.10,-0.24,-0.42,-0.94MPa)模拟干旱环境,测定5种紫花苜蓿品种种子萌发期的发芽率、发芽势、发芽指数、单日发芽数、抗旱指数5项指标,并利用隶属函数法对5种紫花苜蓿的抗旱性进行综合评价。【结果】不同渗透势的PEG溶液对5种紫花苜蓿种子的萌发均有抑制作用,且抑制效果随着渗透势的降低而增强,当渗透势达到-0.94MPa时,只有金皇后的发芽率在50%以上,具备正常的发芽能力。在渗透势从0下降到-0.42MPa时,5种紫花苜蓿种子的发芽高峰期不同程度向后推移5 d左右,且发芽高峰期的最大发芽数也随之下降10~20粒,当渗透势达到-0.94MPa时,5种紫花苜蓿种子单日发芽数都不足5粒。依据隶属函数法,评判出5种紫花苜蓿种子萌发期抗旱性强弱依次为:金皇后>威尔纳>阿尔冈金>中苜一号>冰驰。【结论】在内蒙古半干旱地区,最适宜种植的紫花苜蓿品种为金皇后,其次为威尔纳。
英文摘要	【Objective】This study analyzed drought resistance of 5 alfalfa seeds in the germination period to breed alfalfa varieties suitable for the semi-arid areas in Inner Mongolia.【Method】The seeds of 5 alfalfa varieties(Golden Empress,Zhongmu No.1,Algonquin,Werner,and Bingchi)were used for test under the arid environment simulated with different osmotic potentials of PEG-6000 solution(0,-0.03,-0.10, -0.24,-0.42,and-0.94MPa)to determine the 5 indexes of germination rate,germination potential, germination index,germination number per day and drought resistance index at germination stage.Comprehensive evaluation of drought resistance was also conducted.【Result】The PEG solution with different osmotic potentials inhibited the germination of 5 alfalfa seeds,and the inhibition effect was enhanced with the decrease of osmotic potential.When the osmotic potential was-0.94MPa,only the germination rate of Golden Empress was above 50% and maintained normal germination ability.When the osmotic potential decreased from 0MPa to-0.42MPa,the peak germination period of all the 5 alfalfa seeds was delayed by about 5 days,and the maximum number of germinating peaks at the germination peak was dropped by 10-20.When the osmotic potential reached-0.94MPa,the number of generation seeds of all alfalfa varieties were less than 5 per day.Based on the membership function method,the drought resistance during the germination period was in the order of Golden Empress>Werner>Algonquin>Zhongmu No.1>Bingchi. 【Conclusion】In the semi-arid region in Inner Mongolia,the most suitable alfalfa variety for planting was Golden Empress,followed by Werner.
中文关键词	紫花苜蓿 ; 种子萌发 ; 抗旱性 ; 内蒙古半干旱地区
英文关键词	Medicago sativa L. seed germination drought resistance semi-arid area of Inner Mongolia
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:6410914
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239607
作者单位	程波, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 高永, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 樊璐, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 翟波, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 刘湘杰, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 张慧敏, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 胡生荣, 内蒙古自治区环境工程评估中心, 呼和浩特, 内蒙古 010011, 中国.
推荐引用方式 GB/T 7714	程波,胡生荣,高永,等. PEG模拟干旱胁迫下5种紫花苜蓿萌发期抗旱性的评估[J]. 内蒙古农业大学,2019,47(1):53-59.
APA	程波.,胡生荣.,高永.,樊璐.,翟波.,...&张慧敏.(2019).PEG模拟干旱胁迫下5种紫花苜蓿萌发期抗旱性的评估.西北农林科技大学学报. 自然科学版,47(1),53-59.
MLA	程波,et al."PEG模拟干旱胁迫下5种紫花苜蓿萌发期抗旱性的评估".西北农林科技大学学报. 自然科学版 47.1(2019):53-59.