| Abstract:Using principal component and cluster methods,the diversity of agronomic traits and main biochemical components of 35 tea germplasm in southwest of Guangxi were assessed. The results showed that the differences of agronomic characters among different varieties of tea were bigger with the coefficient of variation ranged from 12.45% to 47.03%. The differences of main biochemical components were smaller with the coefficient of variation ranged from 8.92% to 23.62%. Among them,the variation coefficients of average leaf area,leaf surface and leaf blade with raw state were more than 40%,but variation coefficient of water extract only 8.92%. The principal component analysis showed that the characteristic value of the former seven principal component were bigger than 1. The seven principal components accounted for 76.18% of total contribution rate. The cluster analysis based on agronomic traits and the main biochemical components showed that 35 tea germplasm were divided into seven groups. The bud leaf pastel,the weight of hundreds of bud,the average leaf length,leaf width,leaf area,lateral veins logarithm,leaf color,leaf texture,leaf form,petals number and content of main biochemical components showed significant differences among different groups. The cluster ofⅠ,Ⅵ,Ⅶ were suitable for the green tea. The Ⅱ,Ⅲ,Ⅳ were suitable for the black tea. The Ⅴ was suitable for the both. |
