灰树花种质资源数量性状筛选与分级OA

Quantitative traits of 56 Grifola frondosa strains were evaluated,including five mycelial traits(mycelial growth rate at 10,15,20,25,and 30 ℃)and five fruiting body traits(whole-fruiting body size,height,size-to-height ratio,pileus transverse diameter,and pileus thickness).Trait grades were assigned using the median-average-standard-deviation method.The results showed that the coefficient of variation(CV)among strains for all traits ranged from 13.25％to 29.36％,all exceeding the mean CV within strains(3.09％-15.47％),which indicated favorable polymorphism and stability of the measured data.Mycelial growth rates at 10,15,20,25,and 30 ℃ were divided into 7,7,9,9,and 9 grade ranges,respectively.Whole fruiting body size,fruiting body height,size-to-height ratio,pileus transverse diameter,and pileus thickness were divided into 3,5,5,7,and 7 grade ranges,respectively.These quantitative traits effectively distinguished the tested strains from one another.These results provide a reference for germplasm identification of G.frondosa and the development of its DUS(Distinctness,Uniformity,and Stability)testing guidelines.