从形态上调查了海南麻疯树 Jatropha curcas 试验基地2年生19个种源195个实生家系的田间生长性状.研究结果表明，麻疯树家系平均成活率为93.65 %,树高为1.97 m,地径为6.85 cm,结实枝数为1.38个，结实数量为20个；变异系数介于11.50%~60.70%.不同省份、种源的各生长和结实性状存在显著差异，具有丰富的遗传变异.尽管只有成活率在家系间有差异显著，但上述5个性状的家系遗传变异系数（GCV）均在1.14%~13.64%之间，表明家系间某些性状仍蕴藏着丰富的遗传变异.相关性分析表明，成活率与其他各性状相关性不明显；而树高、地径、结实枝数及结实数量之间具有显著的相关性.各性状与经纬度及海拔间无明显相关性，种源聚类结实也未发现明显的地理相关性，说明中国境内麻疯树的变异为随机的地理变异模式.
Variation in growth and fruit yield of Jatropha curcas was assessed for the 2-year-old provenance/progeny trial plantation in Hainan. The trial consisted of 195 families from 19 provenances in four provinces of China. The following traits were assessed: survival, height, diameter at ground level, number of fruiting branches and fruit yield. Overall mean survival, height, diameter at ground level, the number of fruiting branches and fruit yield were 93.65 %, 1.97 m, 6.85 cm, 1.38 per tree and 20 per tree, respectively. The coefficient of variation varied from 11.50% to 60.70%. There were significant differences between provinces and between provenances from different counties in all growth traits whilst the differences among families were significant in survival only. For the five traits, the genetic coefficient of variation (GCV) in the family ranged from 1.14% to 13.64%, indicating that there were rich genetic variations in some traits among families. All growth traits except survival were positively correlated with each other. However, these growth traits were not correlated with latitude, longitude and altitude of the seed sources. Cluster analysis did not reveal a pattern of variation among the seed sources, suggesting a random variation pattern of J. curcas involved in the trial.