Altitudinal Variation of Needle Functional Traits in Natural Population of Picea likiangensis

This research investigated and selected 4 natural populations of Picea likiangensis in Yunnan province,based on its natural distribution.The length,width,dry weight and C,N,P contents in needles of the 4 popula tions were measured to survey the phenotypic variation of natural populations and the relationship between the phe notypic variation and their altitude of distribution areas.The methods of ANOVA analysis,multi-comparison and correlation analysis were used for analyzing the data measured.The results showed that,there were remarkable(P0.01) variations in needle length,width and dry weight among populations,with component of variance 15.05% 28.03%,but no variation of them within populations.The dry weight was significantly(P0.01) positively correlated to the needle length and width,and their correlation coefficients were 0.466 39 and 0.665 67,respec tively.Regarding to element content in needles,there were significant(P0.05) variations of N and P contents,and C/N ratio among populations,excepting C content.Moreover,the component of variance among populations was higher(29.98% 37.56%) when compared with that within populations,and there was distinctly(P0.01) variance of N/P ratio among populations,and its component of variance was 60.44%.For correlations between nee dle length and N/P ratio,altitude was negatively and significantly(P0.01) correlated; for needle width,altitude was significant(P0.01) positive correlated,for C content and C/N ratio,altitude was significantly(P0.05) positively correlated.

Ҳали таржима қилинмаган