PJB-2002-38
LEAF EPIDERMAL ANATOMY OF SELECTED DIGITARIA SPECIES, TRIBE PANICEAE, FAMILY POACEAE OF PAKISTAN
SYED SHAHINSHAH GILANI, MIR AJAB KHAN, ZABTA KHAN SHINWARI1 AND ZUBAIDA YOUSAF
Abstract
Anatomical studies of both the abaxial and adaxial surfaces of leaf epidermis of the selected Digitaria species showed variations in size and shapes of prickles, short cells, silica bodies, microhairs with basal and distal cells, hooks, stomates and long cells. Leaf epidermal anatomy was found to be an important tool for identification of Digitaria spp. The average lengths of the organelles of leaf epidermises were more clear difference between the species than considering their full ranges of length and breadth. Cross shaped silica bodies were found in D. abludens (av. length less than 15 µm), D. setigera and D. violascens (av. length less than 20 µm), dumb-bell to cross shaped in D. nodosa and D. sanguinalis ssp. vulgaris var. glabra while dumb-bell shaped in D. ciliaris, D. ischaemum and D. radicosa.
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