多變量 解釋法에 의한 苧麻의 品種群 分類

Varietal classification by multivariate analysis in ramie

Varietal distances measured by Mahalanobis’s D² statistics in 2278 possible comparisons among sixty eight varieties of ramie with seven characters, stem length, stem diameter, number of branches per 3.3㎡, percentage of productive tillers, yield of fresh stem, leaf and dry fiber and fiber percentage, and a complete linkage cluster analysis based on the D²s were attempted. Sixty eight ramie cultivars were largely classified into five varietal groups. Group 2, group 4 and group 5 contained twenty three(34%), sixteen(24%) and fifteen cultivars(22%), respectively. Most varieties in group 1 and 2 showed more fiber yield, and varieties in group 2 and 5 showed higher percentage of productive tillers per plant but lower fiber yield. Most of the varietal groups were not associated with their geographical origin. Stem diameter and fiber yield among the seven characters were the largest conrivutors to the D² in both intra and inter groups.