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Anatomy and ultra-structures of leaf of Vatica L. (Dipterocarpaceae) in Peninsular Malaysia
by El-Taguri H. M. A., Latiff A. ( )
HOUSSEIN M. ALI EL-TAGURI & A. LATIFF
Faculty of Science, Benghazi University, Benghazi, Libya.
Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 Bangi,Selangor, Malaysia
Abstract:
Anatomical leaf of 28 species of Vatica including: petiole outline, shape of vascular bundles, fibre distribution, sclereid number, latex canals number and distribution; midrib outlines, shape of vascular bundles, fibre distribution, sclereid number, latex canals number and distribution; leaf margin in cross-section outline; adaxial, abaxial epidermal cells size, the type of vascular bundle fibre and thickness of lamina; leaf surfaces cell wall pattern of adaxial, abaxial epiderm, stomata and trichomes; venation have done.
Most of anatomical characters can be using to identification the species and some are helpful in distinguishing some species.
Examination of the epidermal surface view showed that there were not much variations in stomata type. The stomata type is staurocytic with 4 to 6 subsidiary cells. (Figure 11). The size of stomata is from 14 µm to 31 µm (Table 6). The frequency of stomata is high when the size of stomata is small. It is from 7 stomata to 40 stomata in 0.4 mm2 .
The stomata are present on abaxial epidermis only. (Table 6, Figure 11). Tewary and Sarkar (1985) studied the leaf epidermis of Dipterocarpaceae in Indian forests and recognized two stomatal types in Vatica: cyclocytic and tetracytic stomata.
Srinual and Thammathaworn (2008) pointed that most Vatica species in Thailand have cyclocytic stomata, except V. bella Slooten, V. harmandiana Pierre and V. mangachapoi ssp. obtusifolius (Elmer) P.S. Ashton which present both cyclocytic and actinocytic stomata but they haven’t study size and density.
While Nor Nafizah (2006) pointed out that Vatica stomata are staurocytic with 4-7 subsidiary cells also she hasn’t studied size and density. The size and density of stomata in Vatica species not so different. Only two species V. maingayi and V. stapfiana have stomata bigger than 22 µm. V. pedicellata has the much density of stomata that has 30-40 stomata in 0.4 mm2 while other species less than 30 stomata in 0.4 mm2 .
Petronela & Nevena (2010) have used stomata density to distinguish Sesleria heufleriana from Sesleria uliginosa that stated it is more numerous in S. heufleriana.
PLANT STOMATA ENCYCLOPEDIA 
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