安徽省雜交中秈主要性狀表現(xiàn)及相關(guān)性分析.pdf

1、獨創(chuàng)性聲明本人聲明所呈交的論文是我個人在導(dǎo)師指導(dǎo)下進行的研究工作及取得的研究成果。盡我所知，除了文中特別加以標(biāo)注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得安徽農(nóng)業(yè)大學(xué)或其它教育機構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻均已在論文中作了明確的說明并表示了謝意。研究生簽名：Z之盔時間：2秒／3年／a月廠細關(guān)于論文使用授權(quán)的說明本人完全了解安徽農(nóng)業(yè)大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定

2、，即：學(xué)校有權(quán)保留送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱，可以采用影印、縮印或掃描等復(fù)制手段保存、匯編學(xué)位論文。同意安徽農(nóng)業(yè)大學(xué)可以用不同方式在不同媒體上發(fā)表、傳播學(xué)位論文的全部或部分內(nèi)容。研究生簽名：型乞盔時間：b／弓年／j月／多日第一導(dǎo)師簽名：乒么弛時間：。№，多年／≯月，弓日AbstractInthisthesisanewexcellentmiddleindicaricevarieties(combination)thata

3、rebredinrecentfiveyearsinAnhuiprovinceisusedasmaterials，analyzedyieldtraits、qualitytraitsanddiseaseresistancetraitsfromthedevelopmenttrend、differentyieldlevelvarietiesqualityandresistanceperformance、themainbackboneparent

4、alcombinationperformanceandcorrelationbetweendifferenttraitsetcProbedintohowtoenhanceyield、qualityandresistancesynchronouslyinAnhuiprovincemiddleindicahybridricebreeding，thekeybottleneckcombination、themainbackboneparenta

5、lcombinationruleTheresearchresultsprovideanimportantreferenceformiddleindicahybridricebreedinginAnhuiprovince1、Theyieldlevelofnewricevarieties(combination)bredinrecentyearsinAnhuiprovincegraduallyincreased，andthequantity

6、proportionofvarietieswhoseyieldarehigherthancontrastvarietyandyieldincreasedscopeincreasedgreatly2、Drawfromtheanalysisresultsofquality，theheadmilledriceratechalkinessdegree、chalkinessricerate、thelengthofgrainandlengthwid

7、thratiohavegreatinfluenceonricegrainquality，whiletransparency，alkalispreadingvalue，gelconsistency，starchandproteincontenthadlittleeffectonricequalityInrecentyears，ricegrainqualityhasbeenimprovedgreatlyinAnhuiprovince，inb

8、reedingmainlyfromthegrainshapeandchalkinessdegreeangletoimprovethericequality，grainshapegraduallyshiftstolonggraintype，grainlengthandlength—widthratioincreasesgradually，chalkinessdegreeismoreandmoresmallSoinbreedingwesho

9、uldfindthebalancepointinthegrainlengthandtheheadmilledricerate3、InrecentyearsanewmiddleindicahybridricecombinationinAnhuiprovincearebeenimprovedlargelyinblastresistanceresistancetobandedsclerotialblight、bacterialblight、g

10、reensmutbasicallyunchangedThusinrecentyearsbreedershaveattachedenoughattentiontoriceblast，andthisisrelatedtostrengthenscreeninginHuangshan，Jinzhaiandotherareasofriceblastinrecentyearsbothconsideringtheyieldandresistancet

11、oriceblastInthefuturebreeding，weshouldnotonlypayattentiontothericeblastresistancebutalsotostrengthentheidentificationandselectionofotherdiseaseresistanceatthesametime，especiallyricegreensmutresistance4、Fromtheanalysisofs

12、everalbackboneparentalcombinationscanbeseenII32Aseriescombinationhasthehighest1evelyieldsbutthericequalityandtheabilityofresistancetobacterial1eafdiseaseispoor；Y58Sseriescombinationwashighyieldbettergrainqualityandtheabi

13、lityofresistancetoriceblastandbandedsclerotialbligihtsstrong；Guangzhan63Sseriescombinationhasgoodperformanceinyieldswhiletheperformanceinotheraspectsiscommon；C815seriescombinationhastheworstyieldsbutresisttobacterialblig

14、ht；Xin’anSproductionlevelisgeneraltheabilityofresistanceticeblastandricegreensmutispoor，butalsoeasytospringstripediseaseThroughthecomparativeanalysisofthesebackbonemalesterile1inecombinationfoundthatinthefutureweCallstre