摘要
Weused39SSRmarkerstoanalyzethegeneticstructureof304majorChineseinbredricevarieties,andtocomparechangesintheindicaorjaponicacomponentsinthesevarietiesthathavebeenwidelycultivatedfromthe1950stothe1990sinChina.Thegeneticstructureanalysisshowedthatthesericevarietiesweredistinctlydividedintotwopopulations,indicaandjaponica.Thesub-structureofindicavarietieswasmorecomplexthanthatofjaponicaones.Amongthevariouslines,late-seasonindicaandearlyseasonjaponicavarietieshadsimplergeneticbackgrounds.Theseasonalecotypeswerenotquiteconsistentwiththesubtypesofgeneticstructure.TwelveSSRlociwithspecificdifferentiationbetweenindicaandjaponicawereusedtocalculatetheindica/japonicacomponents.Thedifferencesinindica/japonicacomponentsamongthefivedecadeswerenotsignificant,exceptforlate-seasonindicavarietiesinthe1990s,whichhadasignificantlyhigherjaponicacomponent.TheseresultswillhelptounderstandthegeneticstructureofthemajorChineseinbredricevarietiesandwillbeusefulforindica-japonicahybridbreedinginChina.
出版日期
2013年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
