PJB-2017-113
COMPARATIVE FOLIAR MICRO MORPHOLOGICAL STUDIES OF TRIBE ARUNDINEAE, ARISTIDEAE AND CHLORIDEAE FROM MALAKAND AGENCY, KHYBER PAKHTUNKHWA, PAKISTAN
RAEES KHAN, ASAD ULLAH2, BASHEER KHAN, SHUJAUL MULK KHAN AND ABDUR RASHID
Abstract
Six (6) species of three tribes Arundineae (Arundo donax L. & Phragmites karka (Retz.) Trin. ex Steud.), Aristideae (Aristida adscensionis L. & Aristida cyanantha Nees ex Steud.) and Chlorideae (Cynodon dactylon (Linn.) Pers.& Tetrapogon villosus Desf.) were investigated for their foliar micro-morphological variation and its taxonomic significance through Light and Scanning Electron microscope. The three tribes has a great diversity in the micro-morphological features i.e. stomatal type number, size, shape, stomatal density (SD), silica bodies, macrohairs, micro hairs, epidermal cell number, epidermal cell density (ECD), subsidiary cells, prickles, hooks, papillae, short and long cells on both abaxial and adaxial surfaces. In species of Arundineae paracytic stomata were observed, in Aristideae tetracytic type of stomata were observed, while in Chlorideae both paracytic and teracytic stomata were seen. The Arundineae has maximum stomatal number (Mean 21.4 to 46.2) and epidermal cell (Mean 51.6 to 77.2). These foliar micro-morphological characters were found significant in the delimitation and systematics of these species and can be used as tool in the identification and assessment of taxonomic problems at species and tribe levels.
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