Variation of Leaf Morphological Characters of Melia azedarach from Different Provenances

Leaf traits of 10 provenance resources were determined, and the genetic variations of leaf from different provenances were analyzed. The results showed that variance coefficient of 6 leaf traits ranged from 1648%~4126%, and significant difference of leaf traits existed from different provenances. There existed high heritability in footstalk length and leave area, reached more than 70%, the other four leaf traits reached more than 45%, the difference of Melia azedarach leaf traits is controlled by genetic control to a certain degree. Their coefficients of the regression equation were greater than 070 except the provenance of Xingning, and there were significant correlation between leaf traits and latitude, altitude, annual average temperature, annual rainfall, frostfree period, annual average sunshine, there was significant positive correlation between plant height and the ratio of leaf length/width. The crown breadth was negatively correlated with leaf area, positively correlated with the ratio of leaf length/width. Using the cluster analysis of 6 leaf characteristics of Melia azedarach, 10 provenances can be divided into 2 types.