Abstract

Jatropha curcas L. is a potential biofuel crop grown in the tropics and subtropics. The present study was conducted to enumerate the genetic diversity of 17 morpho-agronomic traits of 45 Jatropha genotypes from Bangladesh during 2015–2017. Analysis of variance revealed sufficient genetic variation among the genotypes for all the traits. High broad-sense heritability coupled with high genetic advance as a percentage of the mean were observed for seed yield per plant and related traits. Correlation coefficients indicated that total number of inflorescences, number of male flowers per inflorescence, number of female flowers per inflorescence, number of fruits per inflorescence, number of seeds per inflorescence, weight of mature fruits per inflorescence, weight of dry fruit per inflorescence and weight of dry seeds per inflorescence were highly correlated with seed yield per plant. The first four principal components explained 81.2% of the total variation. Cluster analysis based on Euclidean distance indicated the highest intra-cluster distance in cluster II and the highest inter-cluster distance between clusters II and VI. Based on this study, it is suggested that hybridization of parents between clusters II and VI will produce noble hybrids that will increase the potential for biofuel production.

摘要

Jatropha curcas L. 是一种生长在热带和亚热带地区的潜在生物燃料作物。本研究旨在列举 45 种麻风树17 种形态农艺性状的遗传多样性。2015-2017 年孟加拉国的基因型。方差分析显示所有性状的基因型之间存在足够的遗传变异。对于每株植物的种子产量和相关性状，观察到高广义遗传力以及高遗传进展占平均值的百分比。相关系数表明总花序数、每花序雄花数、每花序雌花数、每花序果实数、每花序种子数、每花序成熟果实重量、每花序干果重量和重量每个花序的干种子数量与每株种子的产量高度相关。前四个主要成分解释了总变异的 81.2%。基于欧几里得距离的聚类分析表明，聚类 II 中的聚类内距离最大，聚类 II 和 VI 之间的聚类间距离最大。根据这项研究，建议集群 II 和 VI 之间的亲本杂交将产生高贵的杂交种，这将增加生物燃料生产的潜力。