Hubungan arsitektur tajuk dengan fotosintesis, produksi dan kandungan Minyak Jarak Pagar(Jatropha curcas L.) | Shoot architecture and its relation to photosynthesis production, and seed oil content of physic nut (Jatropha curcas L.)

Experiments on physic nut were conducted (1) to analyze branching and shoot pattern, and to observe flowering at various shoot architectures, (2) to determine physiological characteristics, leaf phyllotaxis and leaf morphology at canopy for determining reference’s leaf for photosynthetic measurement (3) to study shoot architecture with special emphasis on the number of primary branches that support optimum growth, production and oil content, and (4) to study shoot architecture by managing primary and secondary branches to support growth, production and oil content. First experiment consisted of four treatments; those were stem pruned at height of 20 cm (T20), 30 cm (T30), 40 cm (T40) from soil surface, and control without stem pruning (T0). Second experiment observed morphological and physiological character of leaf with single factor, i.e., leaf age. Third experiment consisted of ten treatments, i.e., control, T20= stem was pruned at height of 20 cm from soil surface and without control on number of primary branches, T20-2= pruned at 20 cm and two primary branches, T20-3= pruned at 20 cm and three primary branches, T30= pruned at 30 cm and without control on number of primary branches, T30-2= pruned at 30 cm and two primary branches, T30-3= pruned at 30 cm and three primary branches, T40= pruned at 40 cm and without control on number of primary branches, T40-2= pruned at 40 cm and two primary branches, and T40-3= pruned 40 cm and three primary branches. Fourth experiment consisted of five treatments, those were K= control, TbP-2S = without control on number of primary branches and two secondary branches, 2P-2S= two primary branches and two secondary branches, 2P-3S= two primary branches and three secondary branches, 3P-3S= three primary branches and three secondary branches.

Experiments on physic nut were conducted (1) to analyze branching and shoot pattern, and to observe flowering at various shoot architectures, (2) to determine physiological characteristics, leaf phyllotaxis and leaf morphology at canopy for determining reference’s leaf for photosynthetic measurement (3) to study shoot architecture with special emphasis on the number of primary branches that support optimum growth, production and oil content, and (4) to study shoot architecture by managing primary and secondary branches to support growth, production and oil content.