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In order to investigate the genetic diversity of phenotypes and improve the utilization efficiency of different germplasm resources in Phalaenopsis, 76 germplasm resources of Phalaenopsis were investigated on the phenotype diversity by differential analysis, correlation analysis, principal component analysis and cluster analysis. The ornamental value of big-flower, medium-flower and small-flower cultivars were evaluated comprehensively. The results showed that plant height was the most significant difference among the cultivars, and the flower number per plant was the largest coefficient of variation. Most phenotypes showed significant or extremely significant positive correlation. Flower width and length were the main factors leading to the genetic diversity of phenotypes in Phalaenopsis. The 11 phenotypes were divided into three categories by the R-type cluster analysis, among which flower length and width were clustered firstly when the Euclidean distance was 1.1, indicating the highest degree of correlation between them. 76 germplasm resources could be divided into three categories by Q-type cluster analysis, big flower, medium flower and small flower cultivars. In the comprehensive evaluation of ornamental value, the big flower Baihuahonxin, Huanying and V3, the medium flower Chulian, Huangpao, Jixiang, Memphis, 79, Ama and the small flower Auspicious, Xiaomeihua, Christmas Tree, LL29 and Queen Beer obtained higher scores. The results would provide a reference for the efficient utilization of germplasm resources and parent selection of crossbreeding in Phalaenopsis.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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