EVALUASI PERTUMBUHAN DAN PRODUKSI TANAMAN KOLEKSI PLASMA NUTFAH JARAK PAGAR {Jatropha curcas L.)

Abstract

For anticipating future need for physic nut (Jatropha curcas L.) variety with high yield, short growing period demand and tolerant to pest and plant disease, an exploration for collecting new accession to East Nusa Tenggara (NTT), Bali and Gorontalo had been conducted. Beside exploration it has also been developed some accession and improve population from KIJP Pakuwon, Muktiharjo and Asembagus.Population formed in plan furrows and designed in sizes of plots. Accession from the exploration and donor have been planted on August, 2008 in PT Bumimas Ekapersada's plantation in collaboration with Indonesian Center for Estate Crops Research and Development at Pasirranji, Bekasi, West Java. Physical data and collection plant identification result was targeted to obtain variety that has short period to bare fruit, high yield rate and tolerant to pest and plant disease.Based on the examination of morphological growth and development, it can be concluded that Jcur.0006 showed characterstic of short and development in growth and production, accession that has characteristic a short period to bloom and high yield rate with perfect growth is Jcur.0006, plant number 15, and Jcur.0030 with plant number 8, but this variety is less tolerant to louse pest.With assumption that each branch has one bunch, thus 1.600 dry seed weight equals to 1 kg and 2 m x 2 m planting range, first year production potential from each accession originated from Gorontalo Jcur.0006; while plant number 6 and from NTT Jcur.0030 plant number 8, may reach minimum rate not less than 2.25 ton/ha dry seeds and 2.39 ton/ha dry seeds.