Heterosis In Plants As The After-Effect Of Pollination By Bees (Hysteresis)
I. A. Khalifman
Here confirmation is offered of Darwin's insights into the advantages of cross-pollination. The other advantages brought by insect pollination, for example biological pest control, and the optimum number of insects required for efficient pollination is discussed. Flower constancy of bees, their attachment to the area of the flow and exceptions to these rules are examined. The paper covers much ground and laid foundations for future work in this vital area of plant bee relationaships.