Abstract. Dasumiati, Miftahudin, Triadiati T, Hartana A. 2017. Short Communication: Sex types in flowering of Jatropha curcas. Biodiversitas 18: 275-279. Commonly, Jatropha curcas ( jatropha) produces male and female flowers in the different flower. But, the other jatropha have male and hermaphrodite flowers in the different flower. The combination of those flowers in one plant causes sex differentiation in jatropha. This study aimed to identify the sex types of flowers and plant in jatropha, as well as to know the stability of sex types after stem cuttings propagation. The survey was conducted to the population of jatropha in Cikampek, Karawang and Pakuwon, Sukabumi, West Java, Indonesia. We found three sex types in both plantations: monoecious that have male and female flowers, andromonoecious that have male and hermaphrodite flowers, trimonoecious that have male, female, and hermaphrodite flowers in the same plant. Andromonoecious and monoecious jatropha have stable sex type, but trimonoecious jatropha has unstable sex type. The stability of sex type is related to the number of primary branch and distance between nodes.

Abstract. Prasetya CD, Syaufina L, Santosa G. 2017. The effect of various types of forest fires on pine resin productivity in Gunung Walat University Forest, Sukabumi,. Gunung Walat University Forest (GWUF) of Sukabumi, Indonesia is one of pine resin producers that has 71 hectares of resin production area. The forest fire burned 7 hectares of resin production area in August 2015 was expected to affect the resin productivity. The aim of this study was to analyze the effect of each type of forest fire to pine resin productivity and analyze the correlation between the biophysic aspect and pine resin productivity after the fire. The types of forest fire were litter and shrub fire, stem fire, and crown fire. ANOVA test showed that the types of forest fire have significant effect to resin production with the value of F table (3.12)