Abstract:
Rokan Hulu regency is one of distribution regions of durian (Durio zibethinus Murr.) in Riau Province. The objective of this study was to determine the similarity coefficient
and clustering of durian in Rokan Hulu Regency. This research was conducted from
January to March 2011. The morphological and agronomical characters were observed and described. The scoring of morphological characters were then analyzed using
NTSYS-pc 2.02i software. The result showed that the similarity coefficient ranged from 0,14 to 0,66. The lowest similarity coefficient was found at four individuals i.e BR1
(Rambah), SI1 (Rambah Hilir), RU2 (Rambah Samo), and SE5 Gadih (Kepenuhan),
while the highest similarity coefficient was found in two individuals i. e TS2 Kepalo Gajah (Rambah Samo) and BS5 (Rambah). The dendogram showed that the clustering
of durian was based on the morphological and agronomical character similarities, not based on the local name and sample location similarities.
