Study on Variations of Seedling Traits in Choerospondias axillaris Geographic Provenances

The seedling provenance trial of Choerospondias axillaris containing 26 seedlots collected from 8 provinces (zone) was conducted in Yuhang,Zhejiang Province. The results showed there were significant differences in seedling height, ground diamater, field germinination and germinination number of 4 seedling traits of Choerospondias axillaris provenance, and broad heritability of 4 seedling traits were high. The seedling height growth of Choerospondias axillaris provenance displayed quick growing period in July and August, height increment was more than 79.0% of total height increment, and height growth was more than 90.0 cm per month. Before July and after September, the seedling height increment was only 13.9% and 7.0% of total height increment respectively. The seedling height and ground diameter were even negative related to latitude of the seedlots, while they were negative closely related to longitude of the seedlots. 4 quick growing provenances have been selected among seedlings, they are Nandan, Rongan, Hezhou in Guangxi,Huaan in Fujian. 3 provenance zone were districted as system cluster, its was quick growing provenance zone for major south subtropical, middle growing provenance zone for major middle subtropical and slow growing provenance zone for major north subtropical.