非洲新稻与籼稻杂交后代育性及主要农艺性状的观察鉴定.pdf

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1、南方农业学报JOURNALOFSOUTHERNAGRICULTUREISSN2095—1191；CODENNNXAABDOI：10．3969／j：iSSn．2095—1191．2013．4。562非洲新稻与籼稻杂交后代育性及主要农艺性状的观察鉴定秦钢1，黄大辉”，刘驰-，马增风·，张月雄1，阎勇·，卢星高2(1广西农业科学院水稻研究所／广西水稻遗传改良生物技术重点实验室，南宁530007；2广西东亚扶南糖厂，广西崇左532100)摘要：【目的】探明非洲新稻与籼稻育性及主要农艺性状表现，为在水稻育种中利用非洲新稻资源提供理论依据和材料基础。【方法】利用非洲新稻z3与籼稻龙特浦B杂交获得F。群体，

2、再自交获得F：群体，在水稻成熟期调查亲本和各群体的结实率及主要农艺性状。【结果]z3与龙特浦B杂交F；的自交结实率为70％，F：嚣体的自交结实率为24％～80％；嘣体中各性状都存在变异，可从中筛选到综合农艺性状优良的单株。相关分析结果表明，杂交F群体单株产量与株实粒数、株穗数、结实率和穗长之间存在极显著正相关，与株高之间存在显著正相关。【结论】非洲新稻z3与籼稻龙特浦B杂交后代之间不存在自交不育问题，可在水稻育种中直接利用。关键词：水稻；非洲新稻Z3；籼稻龙特浦B杂交；育性；农艺性状中图分类号：$51l文献标志码：A文章编号：2095—1191(2013)04—0562—04Evaluatio

3、noffertilityandmajoragronomictraitsinoffspringderivedfromcrossbetweennewriceforAfrica(NERICA)andIndicarice(Oryzasat／vaL．)QINGan91，HUANGDa-huir，LIUChil，MAZeng-fen91，ZHANGYue-xion91，YANYong1．LUXing—ga02(1RiceResearchInstitute，GuangxiAcademyofAgriculturalSciences／GuangxiRiceGeneticImprovementandBiotech

4、nologyLab，Nanning530007，China；2FunanSugarMill，GuangxiEastAsiaSugarCo．，Ltd．，Chongzuo，Guangxi532100，China)Abstract：【Objective]ThepresentresearchwasconductedtoevaluatethefertilityandimportantagronomictraitsintheoffspringderivedfromcrossbetweennewriceforAfrica(NERICA)and／ndicarice(OryzasativaL．)，inorder

5、toprovidetheoreticalreferencesandmaterialsforNERICAutitizalioninricebreeding．{Method】NERICAcuhivarZ3wascrossedwithIndiearicecultivarLongtepuBtoproduceF1populationandsellingF2generation．‘thefertilityandimportantagronomictraitsofeachgenerationwereevaluatedatthematuringstageofrice．【Result】％eseedsetting

6、rateofF1generationwas70％，andtheseedsettingrateofF2populationrangedfrom24％to80％．VariationwasfoundinF2generationforalltraits，andindividualplantwithexcellentagronomiccomprehensivetraitscouldbescreenedoutfromF2population．Grainyieldperplantexhibitedextremelysignificantlypositivecorrelationwithfilledgrain

7、sperplant，paniclesperplant，seedsettingrateandpaniclelength，aswellassignificantpositivecorrelationwithplantheight．IConc]usion】Therewasnoself-sterilityinfilialgenerationsbetweenNERICAand如diearice．ItiSfe