Short communication: Leaf architecture of 35 species of Dipterocarpaceae cultivated in Forest Area with Special Purposes in Carita, Banten, Indonesia

Abstract

Abstract. MeinataA, Na’iem M, Adriyanti DT, Syahbudin A. 2021. Short communication: Leaf architecture of 35 species of Dipterocarpaceae cultivated in Forest Area with Special Purposes in Carita, Banten, Indonesia. Biodiversitas 22: 2952-2960. Dipterocarpaceae is a major commercial timber characterized by high unbranched bole, paired stipules, and winged fruit. The identification process in the family becomes problematic, in cases where the generative organ is absent. Therefore, a new approach needs to be established to address any misidentification leading to improper utilization. This study aims to determine the leaf architecture in 35 species of Dipterocarpaceae cultivated in Forest Area with Special Purposes (KHDTK) Carita, Banten, Indonesia. The ten leaf samples collected were the third and fourth leaves from terminal shoots of a single tree of each species. Subsequently, the data were observed and measured based on the 17 morphological characters. Each character was then scored and analyzed using multivariate analyses cluster to determine the relationship between species. Dipterocarpaceae generally has pinnate leaf category, geniculate petiole, and entire margin. Furthermore, the phenon line in the dendrogram is cut at 0.695 similarity level to establish meaningful interpretation. The 35 species observed were grouped into 4 major clusters. Small leaf group, inconsistent tertiary vein pattern group, symmetrical leaves with cordate base leaf group, and other groups that do not resemble mentioned characters. The key determination comprised 34 couplets with three characters repeated due to limited descriptors.

Short communication: Variations in leaf morphological characters of Shorea leprosula in progeny trial stand of a logging concession in Kalimantan, Indonesia

“…As a photosynthetic organ, the leaf provides survivability for the plant, and this study showed that the variation in the progeny test of S. leprosula happens in certain characters only. This result strengthens the study that supports leaf architecture as a persistent character in a species (Meinata et al 2021). In conclusion, the S. leprosula showed leaf architecture variations as its response to their environment in four characters, namely laminar shape, apex shape, base shape and midrib thickness.…”

“…This has been proven to separate two different genera in Dipterocarpaceae, i.e. Hopea and Dryobalanops (Meinata et al 2021).…”

“…The seed lot was rogued until the best tree plot remained, and the remaining 72 tree plot were sampled three-leaf blades on each tree plot and conducted the observation. The mature leaves, the seventh leaf from the terminal shoot were selected to be characterized (Meinata et al 2021) and were stored in newspaper and dried under the sun periodically. Furthermore, the paper was changed every six hours to prevent rotting.…”

Leaf Characterizations of IRR 400 Series, BPM 24, and RRIC 100 Rubber (Hevea brasiliensis Muell. Arg.) Clone Using Leafgram Method

“…Other morphological characters that are also proven to be used as distinguishing characters are the apex, vein, and basal. Leaf morphological characteristics of some plants showed that the measured apex, vein, and basal leaves showed significant differences, namely 35 species of dipterocarfaceae [28], local durian of Banten Province [29], vitex negundo [30], a vein of cinnamon cebuense [27], basal, and vein jujube [31], philippine apex [26], Hopea and Shorea species [27].…”