Abstract:

In this study, according to the growth trait data of 8 provenances of Bambusa chungii, the geographic variation of the species was analyzed. The analysis showed that there were abundant variances of 13 growth traits among the different provenances and all the variances reach significant or extremely significant level. Variance of shoot number of single clump among and within provenances was both significant. The rules of geographic variation presented some trends of latitude change pattern. Most of these traits had a close correlation with thermal factors, and the correlation indices reached extremely significant, significant and 0.1 level respectively.The correlation among leaf thickness, clear height and humidity reached 0.1 level significance. Heritabilities of all the traits investigated in this research were bigger. By cluster analysis on main growth characters, all the provenances can be classified into three groups. Selection for all the provenances was given on the basis of synthetic evaluation. The provenances Zengcheng, Huaiji were considered the optimal provenances for region around southwest of Guangdong Province.

Key words: Bambusa chungii, provenance, growth, geographic variation