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1、作物学报ACTAAGRONOMICASINICA2011,37(10):1852−1859http://www.chinacrops.org/zwxb/ISSN0496-3490;CODENTSHPA9E-mail:xbzw@chinajournal.net.cnDOI:10.3724/SP.J.1006.2011.01852油菜不同氮素籽粒生产效率品种氮素积累与分配特征*左青松葛云龙刘荣殷璀艳唐瑶杨光冷锁虎扬州大学江苏省作物遗传生理重点实验室/农业部长江中下游作物生理生态与栽培重点开放实验室,江苏扬州225009–2摘要:2007—2008年
2、度以98个甘蓝型常规油菜品种(系)为材料,在不施氮肥(N0)和施纯氮150kghm(N1)2个处理下,通过测定成熟期不同器官干重、氮素含量,采用组内最小平方和动态聚类方法对供试品种的氮素籽粒生产效率(NUEg)聚类并分析其氮素积累与分配差异。结果表明,不同品种氮素籽粒生产效率差异较大,类型间差异极显著。不同类型品种随着氮素籽粒生产效率增加,产量增加。相关分析表明,氮素籽粒生产效率与成熟期氮素吸收总量之间****相关不显著(rN0=–0.0245,rN1=–0.1131),与成熟期茎秆氮素分配比例(rN0=–0.5941,rN1=–0.4141)
3、和果壳氮素分配********比例(rN0=–0.6007,rN1=–0.5374)呈极显著负相关,与籽粒氮素分配比例(rN0=0.7954,rN1=0.7239)呈极显著正相****关;与成熟期总籽粒数呈极显著正相关(rN0=0.5945,rN1=0.5412)。氮素籽粒生产效率和氮素吸收总量对产量都有显著影响,油菜品种的选育应在一定氮素吸收总量基础上,促进后期氮素从营养器官向籽粒中输送,提高氮素籽粒生产效率,从而达到高产和高氮素利用效率的统一。关键词:甘蓝型油菜;氮素籽粒生产效率;氮素积累;氮素分配NitrogenAccumulationa
4、ndDistributioninRapeseed(BrassicanapusL.)withDifferentNitrogenUtilizationEfficienciesforGrainProduction*ZUOQing-Song,GEYun-Long,LIURong,YINCui-Yan,TANGYao,YANGGuang,andLENGSuo-HuKeyLaboratoryofCropGeneticsandPhysiologyofJiangsuProvince/EcologyandCultivationinMiddleandLowerRe
5、achesofYangtzeRiverofMinistryofAgriculture,YangzhouUniversity,Yangzhou225009,China–1Abstract:Inthisstudy,98conventionalrapeseed(BrassicanapusL.)varietiesweregrownwithN0treatment(0kgNha)and–1N1treatment(60kgNha)in2007–2008.Drymatterweightandcontentofnitrogenweretestedatmaturi
6、ngstage.Therapeseedvarietieswereclassifiedintosixtypesbasedontheirnitrogenuseefficiencyforgrainproduction(NUEg)bytheMinSSwmethod.TheresultsshowedthatdifferencesofNUEginthevarietiesusedinthisstudyweresignificant.AsNUEgincreased,yieldin-creased.Thecorrelationanalysisshowedthat
7、NUEgwasnotsignificantlycorrelatedwithtotalamountnitrogenaccumulation(rN0=–0.0245,rN1=–0.1131).NUEghadextremelysignificantlypositivecorrelationwithnitrogendistributionratiosinstems********(rN0=–0.5941,rN1=–0.4141)andshells(rN0=–0.6007,rN1=–0.5374),butextremelysignificantlyneg
8、ativecorrelationwith****theamountofnitrogeninseeds(rN0=0.7954,rN1=0.7239).N
