Abstract
Physic nut (Jatropha curcas) has great potential to be used as a source of biodiesel due its high content of oil. However, information on the production and seed technology of this species is rare, especially regarding the maturation process. The purpose of the work reported here was to evaluate the main changes during seed maturation, to characterize the physiological maturity and to define the ideal harvest time of Jatropha curcas seeds. During November and December, 2009, the female flowers from trees grown since 2006 were tagged at anthesis. The capsules (fruits) were harvested at 5-day intervals starting 35 days after anthesis (DAA) till 80 DAA and were classified as green, yellow or brown. Seed size, moisture content and dry matter, germination, first count (7d), speed of germination index and seedling growth were determined. The size of physic nut seeds increased until 50 DAA. The maximum seed quality, expressed in germination and vigour, and the maximum dry matter content that characterized physiological maturity, was attained 65 DAA when the fruits turned brown or brown with some yellow spots, and the seed moisture content was high.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
