玉米叶夹角QTL定位

《玉米叶夹角QTL定位》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、万方数据本实验总共定位了7个和叶夹角相关的QTL位点，为近一步研究创造条件。在本研究的基础上，可以针对QTL所在的染色体区域，增加分子标记，对目标QTL进行精细定位。关键词：玉米；叶夹角；QTL；II万方数据AbstractCornisoneofthemostimportantfoodcrop，theproductionofcornin2013ofourcountryisover215milliontons，ithasbecomeChina'sfirstmajorfoodcrops．Domesticandinternationalexperienceshowsthatimprovethey

2、ieldsofmaizeproductionismainmeasurestopromotethedevelopmentofcorn，whilecornyieldimprovementismainlydependentonthebreedingofnewvarietiesandupdates．Compactplantbreedinghigh—yieldinghybrids，throughrationalcloseplanting，SOthatthecornyieldperunitareainanimportantwaytoimprove．Inrecentyears，withtherapidd

3、evelopmentofmoleculargenetictechniquesquantitycontrolseveralimportanttraitsincornhavebeengenemapping，cloning，whichwillhelpresearchandimprovedvarietiesofmaizegenetics．SSRmarkersusedinthisexperiment，inordertocontrolthemaizeleafangleQTLinitialpositioning。The130SSRmarkershavebeendividedinto10linkagegr

4、oups，covering10chromosomesofmaize，thetotalmaplengthWas1979．7cM，theaveragedistanceof15．23cM．TheNo．1-10Chromosome，谢mthelengthof298．9，215．3cM，180．6cM，252．9cM，216．9cM，215．2cM，170．2cM，173．4cM，147．9cM，108．5cM，have27，13，6，19，18，15，11，11，7，4markers，respectively．Themapisconsistent、)l，immaziegeneticmap，whic

5、hhasbeenpublished．Thisexperiment，dependingontheaveragedataofF2：3familyinmeanleafangletraits，hasbeeninprocessofcorrelationanalysis．Itisclearlythatthreetraitsofmeanleafangletraits，onthelevelof0．01，showdesignificantcorrelation．ThecorelationcoefficiemofHoshitaHakazuholeaves，earlobeandtheinversetwoleaf

6、，errleaveandtheinversetwoleaf,Was0．588，0．396，0．391，respectively,inaddition,thecorrelationcoefficientofHoshitaHakazuholeavesisthehighestinallofthree，thatistosay,higherthanthecorelationcoefficientofearlobeandtheinversetwoleaf,thesameasearleaveandtheinversetwoleafTakingadvantageofcomposffeintervalmap

7、pingmethodtodetectthemicroQTL，controlingleafangle，located7QTLpositioningsrelatedwithleafangle，initialyThreeQTLlocus，controllingspikleleaveangle，locatedinthe1,6III万方数据chromosome；twoQTLlocus，dominatingleafbladeangl