花生种质资源主要农艺性状的鉴定与评价

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1、ABSTRACTIDENTIFICATIONANDEV-ALUATAGRONoMICTRAITSINPEANUTIONOFMA矾GERMPLASMPeanut口rachishypogaeaL．)isanimportantoilandcommercialcropinChina,anditplaysanimportantroleinnationaleconomy．Germplasmresourcesarethematerialbasisforpeanutbreeding，therefore，theevaluation，utilizationandinnovationofgermplasmresou

2、rceshasalsobeenanimportantcontentinresearchofpeanuts．Inthispaper,mainagronomictraitsof376peanutgermplasmresourcescollectedfromdifferentregionsofChinawereinvestigated．Onthisbasis，focingonthepodandyieldrelatedtraitsofpeanuts，thecomparsionbetweentraditionalvarietiesandimprovedvarieties，andbetweenvariet

3、iesfromtheSouthemChinaandthosefromtheNorthemwasconducted．Likewise，therelationshipsofdifferentagronomictraitswereanalyzed．Theobjectivesofthisstudyweretoanalyzetheperformancesandvariationsofimportantagronomictraitsamongdifferenttypesofpeanutgermplasms，toselectgermplasmswithcomprehensiveorsinglepromine

4、nttraitsforbreedingandgeneticresearch．Themainresultsofthisstudyareasfollows．1．Theaveragesofmainagronomictraitsof376peanutgermplasmresourceswereasfollows：13．4dfortimefromseedingtoseedling，41．4dfortimefromseedingtoflowering，132．7dforwholegrowthperiod；6．1cmforleaflength，2．9cmforleafwidth，1．9cmforleaf's

5、spacing，7．3cmforpetiolelength；42．2cmformainstemheight，4．8I／1I／1forstemdiameter,47．2cmforlengthofthefirstbranch；10．0fortotalnumberofbranches，6．0fornumberoffirstbranches，4．0fornumberofsecondarybranches；33．3mmforpodlength，14．5rlllnforpodwidth；16．7mmforkernellength．8．7millforkernelwidth；169．9gfor100一pod

6、weight，64．2gfor100·kernelweight，70．8％forkemelproductionrate，13．8fornumberofpodsineachplant．Furtheranalysisshowedthatthecoefficientofvariationislowerinthetraitsofwholegrowthperiod(6．65％)andkernelproductionrate(6．64％)，buthigherinthetraitsofnumberofsecondarybranches(87．5％)，totalnumberofbranches(44％)，nu

7、mberoffirstbranches(28．1％)andnumberofpodsineachplant(41．3％)．Variationcoefficientswerearound30％inthetraitsof100-podweight，100一kernelweight，stemheightandthelengthofthefirstbranch．and10．0"--20．0％forother