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Pak. J. Bot., 45(3): 977-979, 2013. |
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Updated: 30-05-13 | ||||
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POLLEN FLORA OF PAKISTAN–LXXII. ERICACEAE
ANJUM PERVEEN AND MUHAMMAD QAISER*
Abstract: Pollen morphology of three genera representing 5 species of the family Ericaceae from Pakistan has been examined by light and scanning electron microscope. Pollen grains usually tetrads, radially symmetrical, isopolar, mostly prolate-spheroidal, olate-spheroidal rarely spheroidal, trizonocolporate, sexine thicker or thinner than nexine. Tectal surface mostly rugulate with viscin threads or aerolate-scabrate or subpsilate-reticulate. On the basis of size and tectum types 3 distinct pollen types are recognized, viz., Cassiope fastigiata-type and Rhododendron lepidotum-type and Rhododendron hypenanthum-type.
Centre for Plant Conservation, Department of Botany, *University of Karachi, Karachi-75270, Pakistan |
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