Fruit traits variation and clone selection of Jatropha curcas.

【Objective】In order to study the genetic variability and select superior clone of Jatropha curcas,fruit mass,100-seed mass,kernel rate,seed rate,seed volume,and oil content were analyzed.【Method】The fruit characteristics of 3 years old J. curcas of 33 clones were investigated in Xinhai Forestry Farm Hainan Province. Using cluster analysis,the further selections of these clones were evaluated.【Result and conclusion】The results showed that there were significant differences in clones of J. curcas.No. 18 was the best for the 100-seed mass; the oil content of No. 26 and No. 20 was better than those of others. 100-seed mass had a significant positive correlation with fruit mass,seed volume,and oil content. However,oil content had no significant correlation with seed rate and seed volume,but it had a significant positive correlation with other character indexes. No. 1,No. 30,No. 18,No. 15 and No. 25 were selected as the superior clones.