多變量解釋法에 依한 고추의 品種群 分類

Varietal Classification by Multivariate Analysis in Pepper

Mahalanobis’s Distance(D²) statistic in all possible comparisons among fifty varieties of pepper (Capsicum annunm L.) for sixteen morphological characters were compiled of the genetic differences among the varieities and varietal classification was made by single link cluster analysis based on the D²S. Mahalanobis’s Distance revealed great variation from 5.327 to 888.440 in 1,125 inter-varietal comparisons. According to the dendrogram based on the D²S, fifty varieties were classified into fourteen varietal groups, of which three (V, VIII, XIV) consisted of single variety. The averages of intra-group D²S except varietal group X, XI and XII were lower than those of inter-group D²S. Factors mostly contributing to the inter-group D²S were number of days to flowering, fruit length, fresh/dry fruit-weight ratio, and plant height. Most of the varietal groups were not associated with, their geographical origin, but several varieties collected from adjacent localities were grouped in the same varietal group or in neighboring varietal groups. Each varietal group was distinctly characterized by many major morphological characters.