资源描述：
《盐胁迫对油菜种子萌发的影响毕业论文》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、摘要摘要本试验选用哈尔滨市农信油菜种子和黑龙江省盛鸿油菜种子为材料，在实验室内采用培养皿滤纸发芽法[1]，在不同浓度的NaCl单盐胁迫下进行种子发芽实验（浓度梯度设为0、0.2%、0.4%、0.6%、0.8%、1.0%、1.2%七个梯度），测定发芽率、发芽指数、发芽势和活力指数等指标。结果表明：在单盐胁迫下，随着胁迫浓度的增加，油菜种子的发芽率、发芽指数、发芽势和活力指数均有不同程度的降低，相对盐害率升高，种子开始发芽的时间推迟且发芽过程延长；NaCl的胁迫对油菜种子萌发的抑制作用很大，其中浓度0.4%NaCl的胁迫对油菜发芽率的抑制均达到了
2、50%以上分别为88%、88%，在浓度为2.0%的NaCl胁迫下两种供试材料的发芽率均为零；盐胁迫对种子发芽有抑制作用，但低浓度盐胁迫对种子发芽有促进作用。农信油菜种子优于盛鸿油菜种子的抗盐性。关键词：氯化钠胁迫；油菜；种子萌发1/IIAbstractAbstractThisexperimentchoosesitsrapeseedandHarbininHeilongjiangShengHongrapeseedinthelaboratoryformaterial,usingflasksfiltermethod[1],germinateindif
3、ferentconcentrationsofsaltstresswereNaClsingleseedgerminationexperiment(concentrationgradientfor0,0.2%,0.4%0.6percent,andsevengradient,1.0%,1.2%),thedeterminationofgerminationrate,germinationindex,potentialandvigorindex,index.Theresultsshowedthatthesingleundersaltstressconc
4、entrationofstress,alongwiththeincreaseofseedgermination,rape,germinationindex,germinationandvigorindexhaddifferentdegrees,relativerateofsalt,seedstogerminatetimedelayandgerminationprocess,ThestressonrapeseedNaClonseedgermination,includingtheinhibitionofthestressconcentratio
5、nofsoybeanNaCl0.4%ratereachedtheinhibitionof50%respectively,concentration,88%88forNaClof2.0%underthestressoftwoselectedmaterialsforthegerminationrate,Saltstressonseedgermination,butlowconcentrationofsaltstressonseedgermination.ShengHongrapeseedthanitsrapeseedsaltresistance.
6、Keywords:sodiumchloridestress,Rape,SeedgerminationII/II目录目录摘要...................................................................1Abstract...............................................................21.前言.................................................................21.1
7、油菜概述............................................................21.2研究的目的和意义......................................................31.3国内外研究的现状......................................................32.材料与方法...........................................................42.1试验材料...
8、.........................................................42.2试验药品.................
