vatedwheathasbeengreatlyerodedbythefrequentuseofsameparentalgenotypesforbreedingcultivars.geneticerosionnotonlylimitsthefurtherimprovementofyieldandqualitybutalsomakeswheatincreasinglyvulnerabletobiologicalandenvironmentalstre.althoughtherearemanygoodgenesfortheimprovementofwheatintherelatedwildecies,theintroductionofthesegenesfromwildicestocultivatedwheatneedsomeecialcytogeneticmanipulatio.themoderncultivarsandlandracesaretheprimarygenepoolofcultivatedwheat.therealsohadmanygoodgenesforwheatimprovementintheprimarygenepool,andnoecialcytogeneticmanipulationwasnecearytotrafergenesfromtheprimarygenepooltocultivatedwheat.thus,itisanimportantworktoevaluatethegeneticdiversityoftheseresources.themolecularbiologytechniquesmakeitispoibletoevaluatethegeneticdiversityamongthewheatgermplsmsindetail.theobjectivesofthisstudyweretodetecttheryechromatininthebackgroundofanewmultiikeletwheatgermplasm10-aandtheeffectsofthisryechromatinontheperformanceofagronomiccharacters,todescribethegeneticvariatioofseedstorageproteingenesinthechineseendemicwheatlandraces,toevaluatethegeneticdiversitya
ndgeneticrelatiohiamongthechineseendemicwheatlandraces,andtoinvestigatethegeneticdiversityamongsomechineselandraceshighlyresistanttoheadscabbyusingapage,sds-page,fish,rflp,sts-pcrandrmarkers.themainresultsweredescribedasfollowings:
1.usingapage,fish,pcrandrflpmarkers,theryechromatininthebackgroundofanewmultiikeletwheatgermplasm10-awasdetected.apageanalysisindicatedthatthe10-apoeedthegliadinmarkersgl
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