文档介绍：CHAPTER5SELECTIONBREEDING选择育种BYNiuYingze(牛应泽)?Conception:-selectionBreeding(Massselection,混合选择育种)§1SignificanceandMethodsofSelection ,icallynotcreative,:-orientationinvariationsofplantpopulation-accumulationofvariationsinplants-)IndividualSelection(Single-plantSelection)Progenytests,highselectioneffects2)BulkSelection(MassSelection)Withoutprogenytest,)GroupBulkSelection集团混合选择Plantheight;Maturitylength;Morphology2)ModifiedBulkSelection改良混合选择Individualselection+Bulkselection3)MaternallineSelection母系选择法Non-isolated,ordingtoPhenotypesofindividualplants(-pollinatedcrops)Usedforcross-(1)roupbulkselectionmethodsareapplicable(2)SelectionMethodsforcrosspollinatedplantsBulkselection;groupbulkselection;Modifiedbulkselection;Maternallineselection(3)SelectionMethodsforasexuallypropagatedplantsIndividual(clonal)selection,Bulkselection§2SpecialCharacteristicsandEfficiencyofSelectionBreeding 选择育种的特点和成效CharacteristicsofSelectionBreedingSelectionfromsuperiorpopulationsandproceduresimpleContinuousselectionofsuperiorindividualswithcontinuousimprovementHistoryandAchievementsofSelectionBreedingItisanancientbreedingmethod:-1970’sforwheat,rice,cotton,barley,rapeseed(P70.)