1.School of Landscape Architecture and Horticulture Sciences,Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China,Southwest Forestry University,Kunming 650224
2.Key Laboratory of Forest Cultivation of National Forestry and Grassland Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091
3.Forestry Research Institute of Heilongjiang Province,Harbin 150081
Paeonia lactiflora is a perennial herbaceous plant of Paeonia genus in the Paeoniaceae family, widely distributed in northeast, north and northwest China, but its germplasm resources sharply decreased due to human destruction and environmental changes. To explore the rule of phenotypic variation and the phenotypic diversity, 256 individual plants from 12 natural populations of P. lactiflora in Great Khingan Mountains were used as materials, and the data on 23 phenotypic characteristics were collected, and the methods of Nested analysis of variance, Pearson correlation analysis, principal components analysis and cluster analysis were used, respectively. The results showed that the coefficient of variation and the mean Shannon-Wiener index of 15 quantitative traits such as plant height and crown width were 25.88%(12.34%-92.78%) and 1.843, respectively. The mean Shannon-Wiener index of eight quality traits such as leaflet type, the degree of leaflet retraction and flower color was 1.146. There were significant differences in 11 phenotypic traits among and within populations (P<0.01), and the average phenotypic differentiation coefficient between populations was 25.72%. The correlations indicated that most of the 15 quantitative traits were significantly or extremely significantly correlated with each other. The flower diameter was negatively correlated with latitude, humidity and precipitation, but positively correlated with altitude, annual average sunshine hours and temperature; the number of petals was positively correlated with latitude, but negatively correlated with the average annual sunshine hours. The length of compound leaves was positively correlated with the average annual precipitation. The above results indicated that temperature and geographical factors had more impact on flower phenotypic traits than on stem and leaf phenotypic traits of P. lactiflora. Four principal components were extracted by principal component analysis and accumulative contribution rate was 88.678%. The 12 natural populations were divided into three categories by cluster analysis, the first category was P3 population and characterized by multi heads and large flowers type with highly ornamental value; the second category, including two populations P7 and P9, had bigger stem and leaf traits such as plant height, stem diameter, number of scape, compound leaves, and apical leaflets, compared to other populations, indicating the population had vigorous growth. The nine populations in the third category were characterized by compound leaves, short and narrow apical leaflets, wide flower diameter, and short flower stalks. The phenotypic diversity and variation levels of P. lactiflora in Great Khingan Mountains were high, and intra-populations variation was the main sources. In conclusion, this study analyzed the phenotypic diversity of P. lactiflora in Great Khingan Mountains and explored its phenotypic variation patterns, which provided a basis for better protection and utilization of P. lactiflora resources.
SIS Y, MENGQ Y, SUND Y,et al.Evaluation on comprehensive characteristics of herbaceous peonies introduced in Guanzhong[J].Journal of Northwest Forestry University,2021,36(6):134-139.
YUJ B, FENGX F, WANGW Q,et al.Comparative research on pharmacogenetic characteristics and microscopic characteristics of Radix paeoniae rubra from different areas[J].China Journal of Chinese Materia Medica,2010,35(19):2533-2537.
WANGL M, LÜP, YUZ M,et al.Effects of fertilization on underground growth of Paeonia lactiflora under different planting modes[J].Heilongjiang Science,2019,10(10):1-3.
[15]
LASTL, LÜSCHERG, WIDMERF,et al.Indicators for genetic and phenotypic diversity of Dactylis glomerata in Swiss permanent grassland[J].Ecological Indicators,2014,38:181-191.
HANM H, RENF, YANL P,et al.Fruit and seed phenotypic diversity of natural populations of Acer truncatum in Shandong[J].Journal of Central South University of Forestry & Technology,2023,43(11):173-184.
WANY L, LIUA Q, ZHANGK Y,et al.Phenotype diversity of herbaceous peony variety resources in Heze,Shandong of eastern China and Luoyang,Henan of central China[J].Journal of Beijing Forestry University,2018,40(3):110-121.
YANGL H, YUX N.Phylogenetic relationship analysis of different cultivars groups of herbaceous peony according morphological characteristics[J].Journal of Plant Genetic Resources,2016,17(2):209-216.
WANGH J, WANGE Q, FUZ Z,et al.Phenotypic diversity analysis of different cultivars groups of herbaceous peony germplasm resources[J].Journal of Henan Agricultural Sciences,2022,51(12):110-121.
CHENQ H, YINY J, ZHAOR,et al.Characteristic analysis and phenotypic character observation of Chinese endemic Paeonia mairei [C]//Chinese Society of Horticulture Ornamental Horticulture Professional Committee,National Flower Engineering Technology Research Center.Research progress of ornamental horticulture in China 2018.Beijing:China Forestry Publishing House,2018:7.
YANGY, ZHUW, XUEG,et al.Analysis on phenotypic diversity of wild population of Paeonia anomala subsp.veitchii in western Sichuan Province[J].Journal of Plant Resources and Environment,2017,26(3):11-18.
GAOH Y, XIEY Y, CHIY P,et al.Sedimentary composition and detrital zircon U-Pb dating of the sand-gravel profile in Binxian County,Harbin:indications for sedimentary environment and regional tectonic evolution[J].Chinese Journal of Geology,2023,58(4):1354-1372.
LIUX S, LIN, ZHANGX Y,et al.Phenotypic variation and diversity of natural Rosa persica populations in Xinjiang of northwestern China[J].Journal of Beijing Forestry University,2024,46(2):51-61.
ZHANGM.Study on genetic diversity of medicinal plant Paeoniae Radix Rubra and correlation between paeoniflorin and climatic factors[D].Hohhot:Inner Mongolia University,2020.
LIS F, CAIY F, ZHANGX X,et al.Phenotypic diversity of natural populations of Paeonia delavayi [J].Southwest China Journal of Agricultural Sciences,2016,29(10):2470-2478.
FENGZ L, YUW Q, GUG J,et al.Phenotypic diversity and clustering analysis of Malus baccata( L.) Borkh.in some areas of Northeast China[J].Journal of Plant Genetic Resources,2016,17(6):984-992.
YAOT H, ZHUZ H, LIY N,et al.Effects of functional diversity and functional redundancy on the community stability of an alpine meadow[J].Acta Ecologica Sinica,2016,36(6):1547-1558.
XIEG L, HEG X, LIJ X,et al.Leaf phenotypic variation in natural populations of the Cunninghamia securinega at different altitudes[J].Journal of Central South University of Forestry & Technology,2024,44(5):144-155.
XINGK F, ZHANGJ, CHENS,et al.Diversity analysis of phenotypic traits and comprehensive evaluation of Camellia oleifera excellent germplasm resources[J].Journal of Zhejiang University(Agriculture and Life Sciences),2024,50(2):244-257.
LÜJ R, GUOL P, HUANGL Q,et al.Selectivity rank regionalization of Paeonia lactiflora based on fuzzy method[J].China Journal of Chinese Materia Medica,2009,34(7):807-811.
BIY Q, ZHANGM X, CHENY,et al.Applying Biomod2 for modeling of species suitable habitats:a case study of Paeonia lactiflora in China[J].China Journal of Chinese Materia Medica,2022,47(2):376-384.
ZHANGC H, MAND, WUG D,et al.Protection,exploitation and utilization states of specialized Mongolian folk medicine resources and related development strategy[J].China Journal of Chinese Materia Medica,2015,40(5):771-777.