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当前位置: 首页 > 文章 > 盐胁迫对沙芦草萌发特性影响及耐盐性评价 草业科学 2015,32 (8) 1252-1259
Position: Home > Articles > Effects of salt stress on germination characteristics of Agropyron mongolicum and salt-tolerance evaluation Pratacultural Science 2015,32 (8) 1252-1259

盐胁迫对沙芦草萌发特性影响及耐盐性评价

作  者：
周璐璐;伏兵哲;许冬梅;陈丽萍;吴小娟;高雪芹
单  位：
宁夏大学农学院草业科学研究所;宁夏大学科学技术处
关键词：
沙芦草;盐胁迫;种子萌发;综合评价
摘  要：
用不同浓度(0.00%、0.30%、0.60%、0.90%、1.20%)的Na Cl溶液对7份不同地区野生的沙芦草(Agropyron mongolicum)和对照蒙农1号蒙古冰草(Agropyron mongolicum cv.Mengnong No.1)进行种子萌发期盐胁迫试验,并采用隶属函数法对其耐盐性进行综合评价。结果表明,不同浓度的Na Cl溶液对沙芦草的各项指标均有影响,且随着胁迫强度的增强,发芽率、发芽势、发芽指数活力指数、苗长与根长均有明显下降;轻度盐胁迫(0.30%、0.60%)对沙芦草部分材料幼根的生长具有促进作用,重度盐胁迫(0.90%、1.20%)对幼根具有较强的抑制作用。隶属函数法评价结果表明,8份材料萌发期耐盐性排序为:冯记沟7号>新庄集5号>马儿庄4号>野湖井3号>四墩子1号>四墩子2号>蒙农1号蒙古冰草>罗山保护区6号,初步判定于冯记沟采集的沙芦草野生种耐盐性最强,于罗山保护区采集的野生种耐盐性最弱。
译  名：
Effects of salt stress on germination characteristics of Agropyron mongolicum and salt-tolerance evaluation
作  者：
ZHOU Lu-lu;FU Bing-zhe;XU Dong-mei;CHEN Li-ping;WU Xiao-juan;GAO Xue-qin;Grassland Science Institute,Agricultural College,Ningxia University;Science and Technology Department,Ning Xia University;
关键词：
Agropyron mongolicum;;salt stress;;seed germination;;comprehensive evaluation
摘  要：
The germination characteristics of 7 wild ecotypes of Agropyron mongolicum from different areas and cultivar Mengnong No. 1 under different Na Cl concentrations( 0. 00%,0. 30%,0. 60%,0. 90%,1. 20%) were measured and salt tolerance performances were comprehensive evaluated by membership function. The result showed the salt stress had obvious inhibition on each index because the germination percentage,germination potential,germination index,vitality index and relative seedling length and root length obviously decreased with the increase of salt stress. Light salt stress( 0. 30% and 0. 60%) promoted radicle growth for some materials and heavy salt stress( 0. 90% and 1. 20%) strongly inhibited radicle growth for all these 8 germplasms. Based on the membership function method,the salt stress tolerance of these studied 8 germplasms decreased in the following order:Fengjigou No. 7 > Xinzhuangji No. 5 > Ma'erzhuang No. 4 > Yehujing No. 3 > Sidunzi No. 1 > Sidunzi No. 2> Agropyron mongolicum cv. Mengnong No. 1 > Luoshan protection No. 6. Thus,the germplasms from Fengjigou had stronger salt tolerance and the germplasms from Luoshan natural reservation had weaker tolerance.

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