المستخلص: |
The airborne pollen grains of Khartoum city have been studied during one year from 1 January to 31 December 2018, with Non-volumetric air sampler (Vertical cylinder spore trap). The survey of air borne pollen was conducted at a height of 20 meters. The survey recorded 28 pollen grains types included in 15 families. The pollen morph-types of the family Legminoseae (Fabaceae) members showed the highest concentration (229.8/m³) followed by Poaceae (129.09/m³), Amranthaceae (87/m³), Cyperaceae (42/m³), Aracaceae (39.9/m³), Meliaceae (36.4/m³), Euphorbiaceae (35/m³), Rosaceae (30/m³), Tamarixaceae (20.2/m³), Moringaceae (20/m³), Typhaceae (19/m³), Rhmanaceae (17/m³), Anacardiaceae (15.2/m³) Myrtaceae (9/m³) and Combertaceae (8/m³). Qualitative variation of their number was observed to be affected by season and flowering period of the ground taxa. Maximum pollen load was obtained during autumn (July to October) with an average load of pollen 128.1/m³.
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