Document Type
Article
Journal/Book Title/Conference
Phyton
Volume
29
Issue
2
Publication Date
11-17-1989
First Page
175
Last Page
188
Abstract
The main pollinators of Calotropis procera (Arr.) A.IT. f. subsp. hamiltonii (WIGHT) AL1 in the area of Karachi are males and females of Xylocopa pubescens SPIN. and females of X . fenestrata (F.) (Anthophoridae). Workers of Apis florea F . (Apidae) are minor pollinators. The activity of the pollinators (measured as the number of pollinated flowers) was very different in the three populations investigated. The opening of stigmatic chambers by insect legs is regarded as a presupposition for the insertion of a pollinium into the chamber. Into stigmatic chambers whose proper corpusculum is present, a pollinium is more easily inserted than in those chambers whose pollinarium was removed. Pollination of a flower with one pollinium is sufficient for the development of a follicle. The pollen-ovule ratio is low (6.14).
Recommended Citation
Ali, Tahir and Ali, Syed Irtifaq, "Pollination Biology of Calotropis procera subsp. hamiltonii (Asclepiadaceae)" (1989). A. Paper 139.
https://digitalcommons.usu.edu/bee_lab_a/139