黄河三角洲野生大豆种子和幼苗对盐胁迫的响应  

Responses of Seed and Seedling of Glycine soja in Yellow River Delta to Salt Stress

作　　者：赵春[1] 

机构地区：[1]东营职业学院,山东东营257091

出　　处：《大豆科学》2015年第1期71-74,共4页Soybean Science

基　　金：国家"十一五"科技支撑计划(2009BADA7B04;2008BAD95B12);东营职业学院院级课题

摘　　要：采用不同浓度的Na Cl盐溶液和混合盐溶液处理,考察了野生大豆种子在发芽和幼苗阶段对盐胁迫的反应,并利用发芽率、相对生长速率、干物质积累量等指标,对其耐盐性进行了分析和评价。结果表明:盐浓度低于50 mmol·L-1时,野生大豆种子的发芽率、相对发芽率、相对盐害率、幼苗干物质积累和相对生长率不受影响;随着盐浓度增高,种子发芽率逐渐下降,同时盐浓度对种子的萌发进程有明显滞后的影响。盐浓度高于100 mmol·L-1时,野生大豆幼苗干物质积累、相对生长率降低幅度明显,差异均达显著水平。结果还表明野生大豆对不同盐胁迫表现出的反应不同,受单盐胁迫的影响较大,对混合盐处理不敏感。Responses of seed and seedling of Glycine soja treated with sodium chloride and natural mixed salt solutions were studied,the salt tolerance was evaluated with parameters including the germination rate,relative growth rate and dry matter accumulation. The results showed that salt solution lower than 50 mmol·L^-1had no effects on germination rate,relative germination rate,relative salt-injury rate,dry matter and relative growth rate of seedling of Glycine soja. With salinity increasing,germination rate decreased gradually. At the same time,the germination process was lagged by the high salt concentration sharply. The relative growth rate and dry matter accumulation of Glycine soja seedlings decreased evidantly when salt solution higher than 100 mmol·L^-1,and significantly different compared to its control. The result also indicated that Glycine soja had different response to the different salt stress,and single salt stress had more influence than mixed salt solutions.

关 键 词：野生大豆 盐胁迫 耐盐性 

分 类 号：S565.1[农业科学—作物学]