Articles
CULTIVAR IDENTIFICATION THROUGH MORPHOLOGICAL CLUSTER IN OLD CHINA ROSES
Article number
1035_27
Pages
239 – 246
Language
English
Abstract
Forty four morphological characteristics of 40 old China rose cultivars in Beijing and Laizhou were observed and numerically clustered.
The results of principal component analysis showed that 44 characteristics were divided into 13 principal components independent of each other.
The results of R cluster analysis showed that, in addition to the two directional crown, leaf size and the top lobular size, petal size, central and edge color of petal were dependent, the other characteristics were independent.
Taking into account that there was bicolor in roses, the length and width of petal reflect petal pattern, the two colors in one petal and petal size were taken into the following analysis, so was the multiple of two directional crowns, while the length and width of the top lobule was deleted.
The results of Q Cluster analysis showed that 40 old China roses could be clustered into 37 cultivars by the smallest genetic distance L=3.25. Cécile Brunner and Fellemberg, Yushizhuang cultivated in Beijing have very small genetic distance (L=1.0), and the genetic distance of Hermosa and Beauty of Rosemawr, Zhongnong and Shandongfen was very close.
Thirty seven cultivars could be clustered into 6 groups with a distance L=20, indicating that the genetic relationship among old China roses was mainly based on origin and color.
This paper provided a new method to sort out and identify old China roses based on numerical taxonomy.
The results of principal component analysis showed that 44 characteristics were divided into 13 principal components independent of each other.
The results of R cluster analysis showed that, in addition to the two directional crown, leaf size and the top lobular size, petal size, central and edge color of petal were dependent, the other characteristics were independent.
Taking into account that there was bicolor in roses, the length and width of petal reflect petal pattern, the two colors in one petal and petal size were taken into the following analysis, so was the multiple of two directional crowns, while the length and width of the top lobule was deleted.
The results of Q Cluster analysis showed that 40 old China roses could be clustered into 37 cultivars by the smallest genetic distance L=3.25. Cécile Brunner and Fellemberg, Yushizhuang cultivated in Beijing have very small genetic distance (L=1.0), and the genetic distance of Hermosa and Beauty of Rosemawr, Zhongnong and Shandongfen was very close.
Thirty seven cultivars could be clustered into 6 groups with a distance L=20, indicating that the genetic relationship among old China roses was mainly based on origin and color.
This paper provided a new method to sort out and identify old China roses based on numerical taxonomy.
Authors
M.L. Li, J.P. Cui, S.W. Zhao, Q.L. Liu
Keywords
old roses, cultivar identification, morphological character, numerical taxonomy
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