导　　师： 徐克章

学科专业： 0901

授予学位： 硕士

作　　者： ;

机构地区： 吉林农业大学

摘　　要： 栽培大豆属于中等耐盐性作物,盐浓度较高对栽培大豆的生长发育有着抑制作用。随着全球土壤盐渍化程度日趋严重,改良盐渍化土壤的成本太高,培育耐盐性作物以成为解决盐渍话土壤经济有效的方法。近年来,一些科研工作者对作物耐盐性的鉴定方法已经有些报道,通过这些方法,可以筛选出不同耐盐性的种质资源,但大部分研究只是针对某一个时期的研究报道,测定周期长。关于大豆品种整个生育期耐盐性的研究尚不多见。为了探索不同大豆品种间的耐盐性以及鉴定大豆耐盐程度的简易方法,了解不同生育期大豆品种耐盐性的表现,对99个栽培大豆种质材料用80mmol//L盐溶液胁迫培养72h后的发芽率进行了统计研究。依据栽培大豆种子在80mmol//L盐溶液胁迫培养72h发芽率的分级情况,并通过在萌发期以及整个生育期的盆栽盐胁迫实验,反应大豆品种的耐盐性。 本实验于2010年到2012年在吉林农业大学农学院进行。试验共分为三个部分： 实验1：在80mmol//L盐溶液的胁迫下对不同大豆品种材料吸水量与发芽率的研究,包括称量大豆种子的吸水量、种子干重、计算单位种子干重吸水量和发芽率。 实验2：当栽培大豆种子萌发以后,对不同耐盐性的大豆幼苗研究其形态特征,包括侧根数量、根的干重、鲜重和主根长度以及不同盐浓度胁迫后栽培大豆幼苗的存活率。 实验3：在整个生育期对沙培盆栽大豆进行盐分胁迫,观察栽培大豆植株的耐盐性表现,测定大豆的株高,叶面积以及植株中各器官的干重和鲜重。得出了以下的研究结果： 1盐分胁迫下不同品种大豆材料的发芽率和吸水量的变化 用光照培养箱对不同品种的大豆材料用80mol//L盐溶液进行培养,结果发现,栽培大豆的种子吸水量、干重、单位干物质吸水量与品种耐盐性不相关,不同品种间的� The cultivated soybean is moderate salt tolerance crop,high concentration salt has inhibitory effects on the growth and development of the cultivated soybeans. As the world's soil salinization extend is increasingly serious, and the costs of improved salinized soil is too high, nurturing the salt tolerance crops is an effective and economic method to solve soil salinization.In recent years, there were some reports about some scientists' method of identification crops' salinization, through these methods, you can select different salt resistance germplasm resources, but most of the researches is aimed at the study report in a certain period,and the measuring period is long. The Study of soybean varieties of salt resistance during whole growth period is still rare. In order to explore different soybean varieties' salt tolerance and the simple method to identify the salt tolerance level of soybean, understand the salt resistance performance of soybean varieties in different growth period, With80mmol//L salt solution to stress culture99germplasm materials of cultivated glycine max,after72h,statistics the germination rate.According to72h stress germination rate of classification the cultivated soybean seeds in80mmol//L salt solutiontrain, and through the germination and the growth period of potted plant salt stress experiment, reflect the salt resistance of soybean varieties. The experiment started from2010to2012in agronomy college of jilin agriculture university. Experiment is divided into three parts: Experiment1:the research of water absorption and germination rate of different glycine max varieties materials is under the stress of80mmol//L salt solution, including weigh the water absorbing capacity of glycine max seeds, seed dry weight, seed dry weight and water quantity calculation unit and the germination rate. Experiment2:After the seed of soybean germinated, study its morphological characteristics, including lateral root number, root dry weight, fresh weight and root length and after different s

关 键 词： 大豆 盐胁迫 发芽率 筛选 生物量

领　　域： [农业科学]