SEEDLING STAGE EXPERIMENT ON PROVENANCES OF CASUARINA

The results from the experiment showed that the seedling growth is proportional to its root range, number of laterel-roots and nodule weight, especially the latter two. The differences in height and ground-diameter of seedlings among provenances are of significant level. In seedling stage, C. cunninghamiana grows well whereas C. equisetifolia grows poorly in resistance to bacterial wilt C. glauca is the strongest, while C. equisetifolia the weakest. The seed sources with better quality of fast-growing and disease-resistant are as follows: the E2, E3, E9, E15, E19, E30, E35, and E48, in Guangzhou Region; the E7, E11, E21, E29, E47, and E48, in Zhan Jiang Region of Guangdong Province; the E2, E3, E5, E7, E10 and E29 in Hainan Province, among them, the E2, E3, E9, E29, and E48 are of wider adaptabilities.