yuan longping

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1、YuanLongping　　BorninPeking,YuanLongpinggraduatedfromSouthwestAgriculturalCollegeinChinain1953,andthenwasassignedtoteachcropgeneticsandbreedingatanagriculturalschoolinHunanProvince.Hebeganhisresearchinhybridricedevelopmentin1964andsubsequentlywastransferredto

2、theHunanAcademyofAgriculturalSciencesin1971toserveasaresearchprofessor.Itwasthere,twoyearslater,thatheachievedamajorscientificbreakthroughashesuccessfullydevelopedthegeneticmaterialsessentialforbreedinghigh-yieldinghybridricevarieties.　　ProfessorYuaniswidely

3、acknowledgedforthediscoveryofthegeneticbasisofheterosisinrice-aphenomenoninwhichtheprogenyoftwodistinctlydifferentparentsgrowfaster,yieldmore,andresiststressbetterthaneitherparent.Indevelopinghis"three-linesystem"ofhybridrice,ProfessorYuanandhisteamsoonprodu

4、cedacommercialhybridricevarietycalledNan-youNo.2,whichwasreleasedin1974.Withyields20percenthigherthanpreviousvarieties,ProfessorYuan'snewcropimmediatelybegantoimprovefoodavailabilityinChina.　　Inthethreedecadesfollowinghisbreakthroughachievement,plantingofthi

5、snewcrophasspreadsowidely,sothatnowalmosthalfofChina'sriceproductionareaisplantedinhybridricewitha20percenthigheryieldoverpreviousvarieties.Thistranslatesintofoodtofeedapproximately60millionmorepeopleperyearinChinaalone.Beyondthisexceptionalaccomplishment,Pr

6、ofessorYuanhasbuiltanadditionallegacyofcombatingfoodshortagesandhungerthroughhis:　　--Developingofanewtechniqueforincreasinghybridseedyieldsthroughrestrictionofself-pollination;　　--FacilitatingtheestablishmentofthehybridriceseedproductionindustryinChina;　　--D

7、evelopingnewstrategiestofurtherimprovehybridrice　　--Developingasuccessfultwo-linesystemofhybridrice;　　--Developinghigheryielding"superhybridrice";　　--SpreadinghistechniquesforhybridricethroughoutAsiaandtoAfricaandtheAmericas;and　　--Trainingthousandsofscienti

8、stsandresearchersfromover25countries.　　ProfessorYuanhassharedhisknowledgeandtechnologywithforeignscientists,providingthemwithcrucialbreedingmaterialsforthecommercialproductionofhybridriceintheir