Program Pelestarian Dan Pengembangan Pohon Asli Bernilai Tinggi Palahlar (Dipterocarpus Retusus Blume Dan Dipterocarpus Hasseltii Blume) Di Jawa Barat (Program for Conservation and Development of Palahlar (Dipterocarpus retusus Blume and Dipterocarpus hasseltii Blume) as High Value Native Species in West Java)

Abstract

Since the year 2004, up to the year 2006, in cooperation with Perum Perhutani (State owned forestry company) has succeded in establishing plantation plot of palahlar (D. hasseltii and D. retusus) as large as 5 ha in the area of Perum Perhutani, in KPH Bogor and KPH Banten. Research results showed that after reaching 5 years age, average diameter for species D. hasseltii in research location of Cigudeg was 29.90 mm, whereas the average height was 2 12.94 crn For species D. Retusus, average diameter was 27.60 mm and that of height was 217.60 cm In the research location of Carita, average diameter for species D. hasseltii was 48.70 mm, whereas the average height was 421.20 cm; and for species D. retusus the average diameter was diameter was 24.20 mm and that of height was 253,80 cm Genetic variability based on analysis results of POPGENE 32 showed that for palahlar (D. hasseltii) the following values were obtained, namely na (1.7727), ne (1.4021) and he (0.2498), the highest. On the other hand, for palahlar gunung (D. retusus) the value of na was (1,68 18), ne was (1.3797) and he was (0.2240), the highest. Considering that the genetic variability was still high (1 8.69 %), in long tern the plants of D. hasseltii and D. retusus in the research sample plots could be be developed into 125 seed orchards.