pollinium

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pollinium

a mass of POLLEN GRAINS stuck together and carried as a whole during POLLINATION.
References in periodicals archive ?
The ontogeny of pollinia and elastoviscin in the anther of Doritis pulcherrima (Orchidaceae).
Concerning the flower visitors of the Orchidaceae, there is a need for specific pollinators, mainly in species where all the pollen are concentrated in pollinia (TREMBLAY et al.
In order for cross-pollination to occur, insects need access to the pollinia, and the collected pollinia need to be positioned on the insect properly for transfer to the stigma of a flower on another plant.
To confirm a moth species as a pollinator, it has to be caught with orchid pollinia attached to its proboscis.
This butterfly Xanthopan morganii forma praedicta only completely extends its proboscis when it approaches these flowers with their long spurs; it hovers above the flower while drinking its nectar and the orchid pollinia adhere to its proboscis, ready to be carried to pollinate the next flower.
Both Nilsson (1988) and Johnson and Steiner (1997) found that spur length was important for proper pollinia receipt in longtongued orchid pollinators.
Proponents of effective pollination limitation argue that early fruit abortion is due largely to insufficient numbers of compatible pollinia for species that are mostly self incompatible (Wyatt and Broyles 1994).
5 mm long, 3 mm wide, with a central keel, papillose, white or pale pink, cavity bilocular, with a revolute rim; pollinarium composed of two obovate-elliptic pollinia, 2.
Some orchid species are pollinated by only a single insect genus or species and the pollinia vector(s) often belongs to only one gender (e.
8-2 mm, yellow, apex green; pollinia two, waxy, sulcate, ca.
Wyatt (1980) found equivocal results of the effects of pollinia removal from ant-robbed Asclepias curassavica.
Willson and Rathcke [1974] and Queller [1983] both manipulated inflorescence size but estimated male success using pollinia removal; Broyles and Wyatt [1995] manipulated inflorescence size in artificial arrays and used allozyme markers to estimate paternity.