Is intraspecific trait differentiation in Parthenium hysterophorus a consequence of hereditary factors and/or phenotypic plasticity?

作     者：Amarpreet Kaur Shalinder Kaur Harminder Pal Singh Daizy R.Batish Amarpreet Kaur;Shalinder Kaur;Harminder Pal Singh;Daizy R.Batish

作者机构：Department of BotanyPanjab UniversityChandigarh 160014India Department of Environment StudiesPanjab UniversityChandigarh 160014India 

出 版 物：《植物多样性:英文版》 (Plant Diversity)

年 卷 期：2023年第45卷第5期

页      面：611-620页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：University Grants Commission  UGC 

主　　题：Biochemical traits Carbohydrate metabolism Morpho-functional traits Phenotypic variations Protein metabolism Ragweed parthenium 

摘      要：Of the various strategies adopted by an invasive plant species for expanding its niche breadth,phenotypic differentiation(either due to plasticity and/or adaptive evolution) is proven to be the most ***,we studied the persistence of substantial morpho-functional variations within the individuals of alien invasive plant,Parthenium hysterophorus in Chandigarh,India,through field *** on observed differences,the individuals were categorized into two morphotypes,PAand *** higher leaf area,leaf biomass,and chlorophyll content as compared with ***,PBhad a higher stem circumference,stem specific density,twig dry matter content,profuse branching,bigger canopy,and better reproductive output than *** substantiate the persistence of intraspecific variations in P. hysterophorus and to deduce the possible genesis of these variations,we propagated both the morphotypes under experimental conditions in winter and *** from the key morpho-functional differences observed during the field studies,protein and carbohydrate metabolism were studied in leaves and roots of the propagated *** in plant metabolism were observed only during the early growth period,whereas the morpho-functional traits varied in the mature flowering *** effect of growth season was highly significant on all the studied morpho-functional and biochemical parameters(p ≤0.05).Parent morphotypes(P) and interactions between morphotypes and seasons significantly affected several growth parameters(p ≤0.05).The analyses revealed that the contrasting growth conditions at the time of transplantation and early growth may regulate the phenotype of P. *** pattern of intraspecific variations observed during the study is justified to consider morphotype PAas winter biotype and morphotype PBas summer biotype of P. *** study points towards the role of plasticity or a combination of genetic and environmental(G×E) factors in producing the p