3种驼绒藜属植物种子萌发期耐盐性试验研究-豆柴文库

您所在位置：网站首页 / 3种驼绒藜属植物种子萌发期耐盐性试验研究.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

3种驼绒藜属植物种子萌发期耐盐性试验研究
摘要：
驼绒藜属植物是沙漠地区的典型植物，其种子萌发及生长受到环境因素的影响很大。本研究以驼绒藜属植物的3种为研究对象，对种子的萌发期和耐盐性进行了试验研究。结果表明，不同种的种子萌发期和耐盐性有所区别，其中某些种子种类更适合在高盐环境中生长和繁殖。研究这些驼绒藜属植物种子的基础特性对其生态和保存以及合理利用具有重要的意义。
关键词：驼绒藜属植物；种子萌发；耐盐性；高盐环境；生态和保存
一、Introduction
Desertisauniquenaturalecosystemthathasaharshclimateandextremeenvironmentalconditions.Insuchanenvironment,plantgrowthandsurvivalcanbeabigchallenge,butsomespecieshaveadaptedtotheconditionsthroughaseriesofstrategiessuchasdehumidification,saltresistance,anddroughttolerance,includingcamelianspecies.Theseedsofcamelianplantsarepowerfulinensuringthecontinuityandexpansionofthespecies,andthegerminationofseedsisdirectlyrelatedtothesurvivalofthespecies.Theadaptationmechanismsofcamelianplantstoenvironmenthavebeenwidelystudied,buttheinfluenceofsaltstressontheirseedgerminationisstillnotwellunderstood.Inthisstudy,weaimedtoinvestigatethegerminationperiodandsalttoleranceofseedsfromthreecamelianplantspecies.
二、MaterialsandMethods
ThethreecamelianplantspeciesusedinthisexperimentwereAstragalusadsurgens,Haloxylonammodendron,andNitrariatangutorum.Theseedswerecollectedfrommature,healthyplantsintheShihongtanareaofInnerMongolialocatedinthenorth-centralregionofChina.Thecollectedseedswerewellsorted,repeatableseedswereretained,andsubstandardseedswereexcluded.Theseedtestwasmainlytoevaluatetheseedgerminationrateandtimeandtheseedlingsgrowthundersalinesoilconditions.
Theexperimentalsetupconsistedoffourreplicateseachofthecontrolandtestgroups,with25seedsineachreplicate.Thecontrolgroupwasgrownonlyinplainsoil,whilethetestgroupwasgrowninsalt-treatedsoiltodeterminetheirsalttolerance.Thegrowthenvironmentwasmaintainedatatemperatureofaround28°Candundera12-hourlight-darkcycle.Thesalinesoilhadasalinityof0–30g/LandwaspreparedbymixingNaClwiththesoil.Thegerminationratewasobtainedbycountingthenumberofseedsthatgerminated,andthegerminationperiodwascalculatedfromthetimeofsowingtotheemergenceofcotyledonleaves.Forthesalttoleranceassay,theseedlingsweregrownfor15daysinsalinesoil,andtheirrootgr