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In California alone, 400,000 acres of almond orchards require 800,000 colonies of honeybees for pollination.
The first external manifestation of developmental differences during seed maturation occurred about 20 d after pollination as siliques were beginning to ripen.
The morphology of the capitula suggests they are not well adapted for pollination by other nocturnal vectors such as bats or moths.
Since the nocturnal canopy is relatively unexplored, the phenomenon of pollination by nocturnal bees may be commoner than these limited observations suggest.
We compared the efficiency of foraging habit of one of the major pollinators in effecting pollination.
In this study, considerable interspecific overlap of flowering periods was found within each pollination guild.
Unopened inflorescence buds were removed at this stage and the number of flowers which received assisted pollination recorded.
The final treatment was unmanipulated female inflorescences exposed to both wind and insect pollination modes (open pollination).
Seed production from experimental flowers was then contrasted with those naturally exposed to pollination and nectar removal.
We marked such flowers and studied their pollination efficiency.
However, observations and pollination experiments indicated a dual mode of beetle and wind pollination for this palm species.
Remaining chapters review the -owering, pollination requirements and main pollinators of 36 selected bee-pollinated crops, from alfalfa to watermelon.
This paper describes several aspects of the reproductive ecology of piassava, especially its breeding biology, pollination and phenology.
This increase in flower temperature is related to pollination, as it is not produced randomly during floral development.
