紫花苜蓿种质资源评价及新种质的鉴定

《紫花苜蓿种质资源评价及新种质的鉴定》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、TheplantheightandregenerativepropertieofNeinongNo.1stayedintheupperlevelandthatoftheNeinongNo.2wasslightlyworseamongallofthematerials.Thestem-leafratiooftheNeinongNo.1andNeinongNo.2decreasedwiththecuttingfrequency,butthequalitybecomebetter.Thesignificantdi

2、fferenceofdrymatterweightexistedamongdifferentmaterialsanddifferentcuttingfrequances(p<0.5).Thedrymatterweightfornewgermplasm,Neinong2No.1andNeinongNo.2werethehighest,whichreached12538.9kg/hmand13083.82kg/hm,andincreased17.6%-71%and16.5%-78.5%morethan6cont

3、rolvarietiesrespectively.Thedrymattercontributionofeachcuttototalannualforageyieldwere38.14%,31.14%and30.72%respectively.Therewerevariousinnutritionfactsamongdifferentalfalfamaterials.MeancrudeproteincontentofNeinongNo.1wasabove20%,tendedtoincreasewithcutt

4、ingtimes.Meancrudefibercontentwasabout24%,tendedtodecreasewithcuttingtimes.TheNeinongNo.2hadthesimilarregularityInconclusion,NeinongNo.1andNeinongNo.2havebettercomprehensivecharacteristics,soyieldexperimenttrailswereneedtoexecuteforapplicationandregistrati

5、onofthenewvarieties.Keywords:Alfalafa;Germplasmresources;Variety;Identification;EvaluationDirectedby:prof.MIFuguiApplicantforMasterdegree:LiuWeiwei(GermplasmResourcesofGrasslandandLivestock)(CollegeofEcologyandEnvironment,InnerMongoliaUniversity,Hohhot0100

6、18,China)目录1引言............................................................11.1我国苜蓿种质资源研究.......................................11.1.1我国苜蓿种质资源现状.....................................11.1.2国外苜蓿种质资源研究.....................................21.2苜蓿品种的比较鉴定..........

7、...............................21.3苜蓿产量和品质构成因子的研究...............................31.3.1苜蓿株高的研究...........................................31.3.2苜蓿生长速度的研究.......................................31.3.3苜蓿再生特性及生长速度的研究.............................41.3.4苜蓿茎叶比的研究...

8、......................................41.3.5苜蓿鲜干比的研究.........................................41.3.6苜蓿产量构成因子与产量相关性的研究.......................41.4苜蓿品质的研究.............................................61.4.1苜蓿品质特性的