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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (10): 2157-2170.doi: 10.16420/j.issn.0513-353x.2022-1192

• Genetic & Breeding · Germplasm Resources · Molecular Biology • Previous Articles     Next Articles

Statistics and Phenotypic Traits Analysis of Camellia reticulata Registered Cultivars

WU Guijin1, CHEN Longqing1, WEI Qiuyu1, HU Yunchong1, XU Jian1, LI Dongxue1, CHEN Shengtong1, WANG Zhonglang2, GENG Fang1,*()   

  1. 1 Yunnan Functional Flower Resources and Industrialization Technology Engineering Research Center,Southwest Landscape Engineering Technology Research Center of State Forestry and Grassland Administration,School of Landscape Architecture and Horticulture,Southwest Forestry University,Kunming 650224,China
    2 Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China
  • Received:2023-02-25 Revised:2023-07-17 Online:2023-10-25 Published:2023-10-30

Abstract:

Based on the World Camellia Plant Variety Registry,823 cultivars of Camellia reticulata that had been registered in 2021 and before were analyzed for the resources and biological characteristics,and traits diversity analysis,principal component analysis and cluster analysis were carried out for 213 cultivars whose morphological characteristics were well documented. The results showed that Camellia reticulata cultivars are rich in resources,and China,the United States and Australia are the main sources of their cultivars. The flower color is mainly red,followed by pink,rare compound color and white. The flower types are mainly semi-double petals and double petals,and there are few single-petal groups. The leaf shape is mainly elliptic,followed by round,ovate and lanceolate. The leaf tip is mainly tapering,and the leaf base is mainly wedge-shaped. The phenotypic diversity index(H)of 213 cultivars was 0.41-1.91,among which the H value of leaf width was the largest(1.91). The coefficient of variation(CV)was 15.16%-49.08%,among which the leaf length was the smallest(15.16%)and the largest number of petals(49.08%). Through principal component analysis,it was shown that the characteristics of leaves played an important role in the classification of Camellia reticulata cultivars. Clustered by leaf size and number of petals,the 213 cultivars can be divided into three groups. GroupⅠcan be used as breeding materials for single-petal flower breeding,and group Ⅲ has a large number of petals and leaves,which can be used as breeding materials for the selection and breeding of double-petal flower cultivars.

Key words: Camelia reticulata, cultivar resource, phenotypic analysis, registered cultivar