Effects of auxins and thiamine on the efficacy of techniques of clonal propagation in Jatropha curcas L.

► Spring season is best for mass vegetative multiplication of Jatropha curcas. ► Among different growth regulators (IAA, IBA, NAA), thiamine induces highest rooting of stem cuttings and air layers. ► Cleft method of grafting exhibits more success in grafts during rainy season.