Production Capacity of Several Hybrid Genotypes of Jatropha curcas Linn. for Five Years in Pasuruan, East Java - Indonesia.

Abstract

Jatropha curcas Linn. is one of shrubs mainly exist in tropical area. The research team has succeeded to produce several excellent hybrid genotypes which then were planted to be tested its production capacity for 5 yr. Those genotyes were: genoptype 5 (HS49 × SP34), genotype 6 (HS49 × SM35), genotype 7 (HS49 × IP1A), and genotype 18 (SP16 × SM35). This research aims at finding out the production capacity of several hybrid genotypes of J. curcas Linn. which was conducted for 5 yr in Kedung Pengaron, Pasuruan. The research was arranged in Randomized Complete Block Design with four repetitions. Each block contained 20 plants, with plant treatment of hybrid result of genotype 5 (JC5), 6 (JC6), 7 (JC7), 18 (JC18) and two comparators of IP3A and IP3P. Observation was conducted on the number of fruit bunches and fruit on each plant, the number of fruit per plant, seed dry weight per plant. The study showed that J.curcas hybrids of genotypes JC5, JC7 and JC18 had higher production capacity (in term of number of fruit per plant, seed dry weight per plant and dry weight of 100 seeds) than other genotypes (JC6, IP3A, IP3P) in environment with drought stress.