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Position: Home > Articles > Study on salt tolerance of wild black medic germplasm Pratacultural Science 2007,24 (5) 27-33

天蓝苜蓿野生种质的耐盐性研究

作  者:
冯毓琴;曹致中;贾蕴琪;徐智明;周玉雷
单  位:
甘肃农业大学草业学院
关键词:
天蓝苜蓿;野生;生态型;耐盐性;筛选
摘  要:
以主要采集于甘肃、陝西、四川等不同生态条件下的28份野生天蓝苜蓿Medicago lupulina生态型和2种栽培一年生蒺藜苜蓿M.trunculata、蜗牛苜蓿M.scuttelata为材料,用0.3%、0.5%、0.7%和0.9%NaCl溶液进行盐胁迫处理,观察记录处理5、10、15 d的盐害程度;以0.5%作为抗盐指标测定的处理浓度,分别测定胁迫前和胁迫1、5、9 d的超氧化物歧化酶活性(SOD)、丙二醛(MDA)和脯氨酸(Pro)的含量,运用隶属函数法筛选评价它们的抗盐性。结果表明:青海循化、贵州花溪、四川简阳、四川剑阁4个生态型和蒺藜苜蓿耐盐性最好,居参试类型的前五位;蜗牛苜蓿居16位,其耐盐性属参试30份材料的中间类型;天蓝苜蓿各生态型的耐盐性存在较大的差异,临夏甘南和天水生态型是甘肃省内耐盐性较强的两大类型。
译  名:
Study on salt tolerance of wild black medic germplasm
作  者:
FENG Yu-qin1,2,CAO Zhi-zhong1,JIA Yun-qi1,XU Zhi-ming1,ZHOU Yu-lei1(1.College of Grassland Science,Gansu Agricultural University,Lanzhou 730070,China;2.Agricultural Product Storage and Processing Institute,Gansu Academy of Agricultural Science,Lanzhou 730070,China)
关键词:
Black medics;wild;ecotype;salt tolerance;screening
摘  要:
Salt tolerance of 28 ecotypes of black medics,2 accessions of Medicago scuttelat and M.trunculata was tested at seedling stage by 0.3%,0.5%,0.7% and 0.9% NaCl salinity.The damage was measured at 5,10 and 15 d after the treatment.The content of SOD,MDA,Proline before and after 1,5 and 9 d of 0.5% salinity stress was measured,subjection function was used to assess their salt tolerance.The results showed that Qinghai Xunhua,barrel medic,Guizhou Huaxi,Sichuan Jianyang and Sichuan Jiange were the most salt tolerant;snail medic ranked 16th,in the middle of the 30 materials.Great difference in salt resistance was observed among wild black medics;ecotypes from lingxia,Gannan and Tianshui were the salt tolerant germplasm in Gansu province.

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