摘要
TheeasternHimalayanregionofNortheast(NE)Indiaishometoalargenumberofindigenousricevarieties,whicharetraditionallyclassifiedasOryzasativasubspeciesindica,japonicaorintermediatetypes.TheclassificationbasedontraditionalCheng'sindexisofteninconclusiveduetophenotypicplasticityofmorphologicalcharacters,whichareinfluencedbyenvironmentalconditions.WeusedmolecularmarkersspecificforindicaandjaponicasubspeciestoassessthedegreeofgeneticrelatednessofindigenousricevarietiesinNEIndia.Theresultsrevealedthatmajorityofupland(jum)andglutinousricevarieties,traditionallyconsideredasjaponica,weregeneticallyclosetothesubspeciesindica.Allvarietiesofboroecotypewerefoundtobeindicatype,andonlyafewvarietiescultivatedinlowlandanduplandareaswerejaponicatype.Someofthelowlandvarietiesofthesaliecotypewereintermediatebetweenindicaandjaponica,andtheyshowedaclosergeneticaffinitytoO.rufipogon.
出版日期
2014年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)