Response of Phenotypic Plasticity of Phyllostachys prominens to Sandy Coastal Habitats
The research aims to explore the adaptation strategies of Phyllostachys prominens in difficult sandy coastal sites,and provide a theoretical basis for the introduction and cultivation of bamboo plants on sandy coastal land.The morphological characteristics of ramets,branches,leaves and rhizomes of Ph.prominens under the two habitats of mountain red soil and sandy coastal land are measured to explore the response of phenotypic plasticity of Ph.prominens to sandy coastal habitats.The results show that compared with mountain red soil habitat,the plant height,diameter at breast height,total number of bamboo nodes and the number of branch nodes of Ph.prominens in sandy coastal habitat significantly decrease by 26.15%,35.58%,26.68%and 18.90%(P＜0.05).The branching angles of Ⅰ,Ⅱ and Ⅲ grades significantly increase by 17.48%,19.40%and 27.69%,while the branch length and the branch number significantly decrease(P＜0.05).Leaf length,leaf area,leaf shape index and specific leaf area significantly decrease by 20.21%,23.79%,23.52%and 8.65%,respectively,and blade thickness significantly increases by 14.41%(P＜0.05).The average whip diameter,the average whip length and the biomass significantly drop by 24.2%,33.54%and 19.03%,respectively,and the total whip length,the flagellar density and the total bud number significantly increase by 19.92%,37.34%and 42.61%(P＜0.05).Soil pH value,hydrolyzable nitrogen and total nitrogen content are the key factors affecting the phenotypic plasticity of Ph.prominens in sandy coastal land.Ph.prominens can get adapted to difficult sandy coastal sites through morphological plasticity changes in ramet morphology,leaf functional traits and underground stem morphology.
万方数据
维普
