Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (10): 2777-2788.DOI: 10.3969/j.issn.1000-2561.2021.10.005

• Variety Breeding and Genetic Diversity of Tropical Crops • Previous Articles     Next Articles

Analysis of Phenotypic Diversity of Nymphaea L. in Hainan, China

PAN Qinglong1, FU Yingge1, GU Jia1, SHENG Yuhui2, LI Qingxue1, RAO Ying3, ZHU Tianlong4, ZHOU Yang1, SHI Youhai1, ZHAO Ying1,*(), WANG Jian1,*()   

  1. 1. Key Laboratory of Genetics and Germplasm Innovation of Tropical Forest Trees and Ornamental Plants, Ministry of Education / Key Laboratory of Germplasm Resources Biology of Tropical Special Ornamental Plants of Hainan / College of Forestry, Hainan University, Haikou, Hainan 570228, China
    2. Hengxing University, Qingdao, Shandong 266100, China
    3. Guizhou University, Guiyang, Guizhou 550025, China
    4. Hainan Fodu Lianyuan Ecological Agriculture Co., Ltd., Haikou, Hainan 570228, China
  • Received:2021-03-08 Revised:2021-04-26 Online:2021-10-25 Published:2021-11-25
  • Contact: ZHAO Ying,WANG Jian


45 phenotypic traits of 86 water lily (Nymphaea L.) resources in Hainan were surveyed, and the diversity, correlation, clustering and principal component analysis were conducted. The phenotypic traits of the 86 water lilies varied greatly, and the diversity indexes of 13 quantitative traits ranged from 0.612 to 2.041, with the highest value of petal width (2.041) and the lowest one of sepal number (0.612). The diversity indexes of 32 quality traits ranged from 0.259 to 1.648, in which the highest value was the flower color (1.648), and the lowest value was the stigma color (0.259) and the middle axon color (0.259). The variation coefficient of the 13 quantitative traits ranged from 19.98% to 122.06%, among which the number of stamens (122.06%) and the total number of petals (109.87%) were the two most varied traits. Correlation analysis showed that significant positive correlations (P<0.01) existed between the length of leaf and width of leaf, and other 5 couples of characteristics. Clustering analysis of the 86 water lilies were divided into four groups: Brachyceras, Anecphya, Lotus and Nymphaea. Eight principal components were extracted by principal component analysis with characteristic values greater than 1.5, and the cumulative contribution rate was 60.838%. Among the 86 water lilies N. gigantea ‘Albert de Lestang’ ranked the highest value in comprehensive score, and N. ‘Pygmaea Alba’ got the lowest one.

Key words: waterlily resource, phenotypic trait, clustering analysis, principal component analysis

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