将麻疯树栽培品种FD-8号种子分为≥0.80 g/粒、0.70~0.79 g/粒、0.60~0.69 g/粒及<0.60 g/粒共4个等级,研究不同质量等级种子的性状、萌发能力及苗木生长差异。结果表明,随种子质量的增加,种子及其组成部分的质量、尺寸及出仁率不同程度增加,种子发芽率、种子出苗率、苗木生长量及苗木质量也随之增加,但劣质种仁比率、种仁与种子体积的比值及萌发后种仁腐烂率明显下降;较大质量种子幼苗成活率明显小于质量较小种子;同一等级种子的萌发进程在不同气温条件下也有差异;<0.60 g/粒的种子正常发芽率仅为10%,出苗率不足10%,不宜作为播种使用。 The seeds of Jatropha curcas FD-8 were divided into four grades of ≥0.80 g / grain, 0.70 ~ 0.79 g / grain, 0.60 ~ 0.69 g / grain and <0.60 g / grain for the study of seeds with different quality grades , Germination ability and seedling growth difference. The results showed that the seed germination rate, seed germination rate, seedling growth rate and seedling quality also increased with the increase of seed quality, while the quality, size and kernel rate of seed and its components increased to some extent. However, , The ratio of seed to seed volume and seed germination rate decreased significantly after germination; the survival rate of seedlings of larger quality seeds was significantly less than that of the same quality seeds; the germination rate of seeds of the same grade was also different at different temperatures; <0.60 g / Seed germination rate of normal seeds is only 10%, less than 10% of the emergence rate, should not be used as sowing.