Authors : U. G. Basarkar
Page Nos : 01-10
The present investigation deals with pollen morphological study of flowering plants from Ramshej Fort, Mhasrul, Nasik, Maharashtra during the period of January 2016 to December 2016. Fresh flowers from different plants collected early in the morning before anthesis. Collected pollen grains treated by acetolysis technique and observed under light microscope for pollen morphological studies.The purpose of this survey work was to collect the pollen materials from different plants growing in the field and study of different pollen parameters such as shape, size, colpi and exine ornamentation. Pollen grain from plants such as Parthenium hysterophorous ,Alternanthera cicilis Hibiscus panduriformis ,Plumbago zelanica ,Malvastrum spp. ,Lantana camera ,Argyreaya species ,Cassia occidentalis, Brassica campestris ,Laiunea sarmenosa Cordiospermum heicabum ,Merremia species ,Vernonia cineraria ,Tridax procumbens ,Zenia pinnata ,Smithea spp. ,Ribulus tenestris, Desmodium scopiurus ,Macroptilium uniflorum ,Euphorbia geniculata, Ageratum conyzoides ,Peristrophe paniculata ,Borrahavia diffusa ,Ipomea marginata , Sonchus oleraceus ,Oxalis coniculata , Synedrela nudiflora ,Euphorbia hirta ,Cantarium meyeri were collected. Total 30 types of pollen grains from different plants collected. Out of these pollen types 7 belonging to Asteraceae, 3 from Malvaceae, 3 from Convolvulaceae, 3 from Fabaceae, 2 from Euphorbiaceae and one from Amaranthaceae, Plumbaginaceae, Verbenaceae, Caesalpinaceae, Brassicaceae, Sapinadaceae, Zygophylacaeae, Boraginaceae, Acanthaceae, Steraceae, Oxalidaceae and Gentiaceae family respectively. Among the collected taxa 9 shows trizonocolporate type, 4 shows polyzono heterocolporate type and one exhibits tetrazonocolporate type of pollen grains. Tetrazonocolporate type of pollen grain is found in Argyreya species. On the basis of pollen parameters the present investigated taxa like Parthenium hysterophorus, Plumbago, Lantana camara, Argyra spp., Cassia occidentalis and Brassica campestris having tricolporate pollen grains may be considered as in advanced status whereas Acacia auriculiformis has primitive status in scale of evolution. The present study is useful in the preparation of a complete pollen calendar in different seasons of the area under investigation. The colporate structures could be noticed very clearly in acetolysed pollen grains. The prepared pollen slides of the taxa investigated may be used as reference slides for identifying the pollen grains captured from air.