In order to reveal phenotypic variation degree of involucres and nut in Castanea mollissima and relationships between different phenotypic characteristics,ten phenotypic indexes of involucres and nut in some C.mollissima germplasm were analyzed respectively by using the methods of descriptive statistics,variance analysis,Duncan's multiple comparative and correlation analysis.The results show that among the ten phenotypic indexes,six indexes have lower variation,including length,width,height of involucres an...