Determination of Physiological Maturity Stage for Harvesting Quality Seeds in Jatropha (Jatropha curcas Linn.)

摘要

Studies on determination of physiological maturity stage for quality seed production in Jatropha revealed that the fresh and dry weight of seed (1.382 and 0.762 g seed(-1), respectively), germination (80 per cent), drymatter. production (3.047 g seedling(-10)), oil content (32.48 per cent)and protein content (18.37%) reached the maximum at 75 days after anthesis associated with the visual symptoms in change of fruit colour from green to yellowish orange. Hence the seeds of jatropha-attained physiological maturity at 7,5 days after anthesis with yellowish orange colour, which is considered as physiological maturity indice for harvesting quality seeds.