Morpho-Palynological investigations of melliferous plants using microscopic techniques from Khyber Pakhtunkhwa, Pakistan

Abstract

Pollen morphology of 16 species belonging to 8 different families; Apocynaceae, Brassicaceae, Capparaceae, Euphorbiaceae, Fabaceae, Poaceae, Solanaceae and Zygophyllaceae were analysed from Khyber Pakhtunkhwa with the help of microscopic techniques. Both qualitative and quantitative features of pollen were examined including polar and equatorial diameter, colpus length and width, exine sculpturing, pores number, pollen shape, number of sterile and fertile pollen using Leica microscope (D1000) fitted with camera Meiji Infinity 1 and examined statistically by software IBM SPSS Statistics 20. Pollen observed were small to large with suboblate, oblate-spheroidal, prolate-spheroidal and subprolate shape. Exine ornamentations were reticulate and psilate type in all the studied plants. Colpi and pores of the selected plants observed are tricolporate, tricolpate and monoporate. The present study showed that both spring and autumn seasons are the prominent seasons for honey production and beekeeping industries in Khyber Pakhtunkhwa. Brassica camp-estris is the most visited species by honeybees in the study area. Melliferous plants gave knowledge about botanical origin of honey and geographical origin of honeybees. The current study identified numerous bee forage plants which may help to raise the concept of cultivation of melliferous herbaceous plants by the local people, to be used for honey production. The identification of these potential sources may help the beekeepers to increase the honey production and increase in agricultural yields through pollinations.