PLANT CELL BIOTECHNOLOGY AND MOLECULAR BIOLOGY

Durian tree (Durio zibethinus) is one of the Multipurpose Tree Species are plants that are most widely planted by people in the Wan Abdul Rachman Grand Forest Park (Tahura WAR). The durian species (Durio zibethinus) that exist in the Tahura WAR are local species that have been around for generations and are cultivated in traditional ways. This research was conducted to assess the health level of durian trees (Durio zibethinus) in the prospective Garden Nusantara Tahura WAR. The steps in this research were determining measurement plots, making measurement plots, data collection, tree inventory, tree health identification, and data analysis. Based on the results of the study, it was found that the number of durian trees (Durio zibethinus) successfully inventoried amounted to 182 stems. Of the 10 cluster plots that had been made, the most often found damage to durian plants (Durio zibethinus) are open wounds, leaves, shoots/buds damaged, and broken/dead branches. Then, the most often found locations of damage were in the leaves, the top and bottom of the stem and the branches. This study concludes that the number of Durian trees (Durio zibethinus) out of a total of 10 clusters is 182 trunks and the health levels of durian trees (Durio zibethinus) in the prospective Garden Nusantara Tahura WAR are 60% good, 30% medium and 10% bad. In general, the health of trees is categorized as the medium with an average NKH value of 1.75.