Study on seed phenotypic traits and germination of Calophyllum inophyllum L. with different provenances on Hainan Island

The phenotypic traits，germination features and the relationships between them of Calophyllum inophyllum from three different northeast-coast places of Hainan including Haikou，Qionghai and Wenchang were studied. Results showed that significant differences were found among provenances，followed as Haikou > Wenchang > Qionghai in length，width and thickness of seed and fruit stone and air-dry weight of fruit stone. Among three different provenances，the highest germination rate，germination potential，germination index and height of 2 months seedlings occurred in Wenchang provenance. The result of correlation analysis showed that the germination rate，germination potential and germination index had significantly positive correlation with air-dry weight，length，width and thickness of fruit stone. Result indicated that the treatment of 100 mg/L GA3 had the highest germination rate，germination potential and germination index. It was clear that phenotypic traits and germination features differed significantly and had positive correlation among different provenances，and appropriate concentration of plant growth regulator could promote the seed germination