Characteristics of the Mature Leaf Sructure of Wild Vitis davidii
Vitis davidii is one of the wild grape species in China,and it is widely distributed in the area of southern Qinling Mountains.It is resistant to Botrytis rot,Coniothyrium diplodiella,Glomerella cingulata,and anthracnose with high application values.Six hundred and ninety five accessions of V.davidii were collected and used as materials in this study.Nine metric leaf characters were measured.The leaf traits were characterized quantitatively by using the Galet numerical analysis method,and the wild V.davidii materials were classified.The mature leaf shape demonstrated rich diversity.The length of the main leaf vein was from 67 to 272 mm,other vein lengths and angles also had different degrees of variation.The leaf area ranged from 43.85 to 573.12 cm2.The principal components of the variation were leaf length and leaf area (accounting for 58.81％ of the total variance).The variance of angle accounted for 15.40％ of the total variation.The contribution of the two principal components was 74.21％.Cluster analysis showed that the Euclidean square distance among the V.davidii materials changed from 1 to 25.The material with a distance coefficient of 1 was expressed in A series.When the coefficient was 5,the materials were divided into 45 types.When the distance coefficient was 25,the materials were divided into 2 categories.The first category was made up of 111 A series with 138 materials,and the second major category was consisted of only two materials:No.565 and No.646.
国家科技期刊平台
NSTL
万方数据
维普
