A Preliminary Study on the Geographical Provenance of Zizyphus mauritiana

Zizyphus mauritiana(Lam.)is an important host plant for the exotic species of lac insect,Kerria sindica Mahd..Seeds of the trees taken from 5 districts in Yunnan Province,China and Narkum,Burma were used in the experiment and the result shows that there is a close relationship between their characters,germination and growth patterns of the seedlings and young trees and their geographical distribution and climatic condition.These would provide scientific basis for the distribution boundary and classification of the climatic ecotypes,and would be helpful for choosing better forms of the tree.