TAN Liping,ZENG Wanqing,LIU Xianan,et al.Differences in Functional Characters of Paeonia decomposita From Different Provenances and Their Relationships With Environmental Factors[J].Northern Horticulture,2019,43(21):48-55.[doi:10.11937/bfyy.20190704]
不同种源四川牡丹功能性状差异及其与环境因子关系
- Title:
- Differences in Functional Characters of Paeonia decomposita From Different Provenances and Their Relationships With Environmental Factors
- 文献标志码:
- A
- 摘要:
- 四川牡丹具有极高的观赏、药用价值和开发潜力，野生种群数量稀少，现已处于濒危状态。该研究以四川牡丹10个野生居群为试材，采用单因素方差分析法、相关性分析法和回归分析法，研究了不同种源四川牡丹功能性状差异及其与环境因子间的关系。结果表明：通过单因素方差分析，不同种源地四川牡丹功能性状平均变异系数幅度为11.27%~38.37%，其中叶面积、叶干质量平均变异系数较大，说明二者性状功能具有不稳定性；种源地间四川牡丹的茎粗、株高、叶绿素含量、叶氮含量、比叶面积、叶干质量、叶面积差异显著（P<0.05），反映四川牡丹对环境的适应性强。Preason相关性分析表明四川牡丹功能性状主要受纬度、土壤全氮含量和土壤速效磷含量的影响，其中茎粗与土壤全氮含量、比叶面积与土壤速效磷含量显著正相关，叶面积与纬度显著负相关。回归分析表明茎粗与土壤全氮含量（Y=6.366＋1.902X,R2=0.507，P=0.021）、比叶面积与土壤速效磷含量（Y=79.300＋5 563.823X，R2=0.571，P=0.011）、叶面积与纬度（Y=1 452.767-42.535X，R2=0.488，P=0.025）呈线性关系。四川牡丹对环境的适应性强，功能性状在不同种源地间差异显著；四川牡丹茎粗随着土壤全氮含量升高呈上升趋势，比叶面积随着土壤速效磷含量升高呈上升趋势，叶面积随着纬度的上升呈下降趋势。
- Abstract:
- For its high ornamental and medicinal value and developed potential,Paeonia decomposita is scarce and is now in an endangered state.In this study,ten wild populations of Paeonia decomposita were selected as the research object.The functional characters of Paeonia decomposita from different provenances and their relationship with environmental factors were studied by one-way analysis of variance,correlation analysis and regression analysis.One-way analysis of variance showed that the average coefficient of variation of functional characters of Paeonia decomposita in different provenances ranged from 11.27% to 38.37%,and the average variation coefficient of leaf area and leaf dry weight was large,indicating that the characters were unstable.The stem diameter,plant height,chlorophyll content,leaf nitrogen content,specific leaf area,leaf dry weight and leaf area of Paeonia decomposita were significantly different (P<0.05),reflecting the strong adaptability of Paeonia decomposita to the environment.Preason correlation analysis showed that the functional characters of Paeonia decomposita were mainly affected by latitude,soil total nitrogen content and soil available phosphorus content,and the stem diameter was significantly positively correlate there was a linear relationship between the stem diameter and soil total nitrogen content (Y=6.366+1.902X,R2=0.507,P=0.021),the specific leaf area and soil available phosphorus content (Y=79.300+5 563.823X,R2=0.571,P=0.011),and the leaf area and latitude (Y=1 452.767-42.535X,R2=0.488,P=0.025).It is concluded that the Paeonia decomposita has strong adaptability to the environment,and the functional characters are significantly different among different provenances.The stem diameter of Paeonia decomposita increases with the increase of soil total nitrogen content,and the specific leaf area increases with the increase of soil available phosphorus content,and the leaf area decreased with the increase of latitude.
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备注/Memo
第一作者简介：谭利平（1994-），女，四川宜宾人，硕士研究生，现主要从事植物应用等研究工作。E-mail:1032426566@qq.com.责任作者：彭培好（1963-），男，四川成都人，博士，教授，现主要从事生态环境评价及生物多样性等研究工作。E-mail:peihaop@163.com.收稿日期：2019-05-06