摘要
Abstract
HeihecityislocatedincoldareaofChina,wheremaizegermplasmgeneticbasisabnormalnarrow,theintroductionandabsorptionforeigngermplasmisoneoftheeffectivewaysofexpandingthemaizegermplasmresources.With25Russiaveryearlymaturitymaizeimprovementlinesandtherepresentativegermplasmofdomesticmaingermplasmgroupsoffourbreedingexcellentinbredlinesastheexperimentalma-terial,usingtheNCⅡgeneticmatingdesign,thespecialgeneralcombiningabilityofproductionandgroupsofheterosisanalysisbetweenRussianleadgermplasmimprovedandtestlineswereconducted.Theresultshowedthat25Russianleadgermplasmimprovementlinesweredividedintofourmajorgroups.Tangsipingtougroup:Heiyue1,Heiyue10,Heiyue11,Heiyue12,Heiyue13,Heiyue15,Heiyue19,Heiyue24,Heiyue25;Reidgroup:Heiyue2,Heiyue6,Heiyue7,Heiyue9,Heiyue21,Heiyue22;Lancastergroup:Heiyue4,Heiyue5,Heiyue8,Heiyue14,Heiyue20;Lvdahonggugroup:Heiyue3,Heiyue16,Heiyue17,Heiyue18,Heiyue23.Theresultswouldprovidetheoreticalbasisforthereasonableandeffectiveuseofthe25materialsformaizebreedinginHeilongjiangprovince.关键词
玉米/俄引改良系/特殊配合力/类群Key words
maize/Russia improved inbred lines/special combining ability分类
农业科技
