摘要 : Variability in seed morphological characteristics, seed germination and seedling growth characteristics was observed among the 40 genotypes of Jatropha selected from the kandi (sub-mountainous) areas of Punjab. Maximum seed weight... 展开 Variability in seed morphological characteristics, seed germination and seedling growth characteristics was observed among the 40 genotypes of Jatropha selected from the kandi (sub-mountainous) areas of Punjab. Maximum seed weight, seed germination and plant height were recorded in PAU-3, while maximum collar diameter was in PAU-14. Significant correlation between seed parameters (seed weight and seed length) and plant growth parameters (height and collar diameter) was observed. However, the correlation between seed diameter and germination index was found to be non-significant. Heritability and genetic gain was observed to be the highest for the seed weight (0.765, 41.0 per cent) and the lowest for the plant diameter (0.374, 5.30 per cent), respectively. The considerable variation for seed weight and seed length coupled with high heritability indicates the possibility of improvement through selections. The medium to low heritability for growth traits shows the influence of environmental variableson these traits. 收起