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Polinización zumbadora
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Tipo de polinización en el que la abeja hace vibrar los músculos de sus alas para liberar los granos de polen, esto usualmente se da en anteras poricidas. Por ejemplo, en muchas especies de Solanum (Solanaceae). |
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Polipétala
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Se dice de la corola que posee los pétalos libres entre sí. Sinónimo de dialipétala y coripétala. Opuesto a gamopétala o simpétala. |
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Pollen
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Male reproductive structures contained within the anther of the stamen and usually released at anthesis. Same as microgametophytes. |
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Pollen drop
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A small drop of liquid similar to nectar that accumulates on the apex of the ovule of gymnosperms. The wind-dispersed pollen of gymnosperms lands on the pollination drop and when it dries the pollen is carried into the ovule where it eventually fertilizes the egg to produce an embryo. See A in the attached figure. |
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Pollen guide
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Markings on a flower that apparently serve to guide pollinators to pollen which is the reward they receive from the flower. Some are visible to humans, but others are apparent to humans only through ultraviolet photography. |
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Pollen guide
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Markings on a flower that apparently serve to guide pollinators to pollen which is the reward they receive for visiting the flower. Some pollen guides are visible to humans, but others are apparent to humans only through ultraviolet photography. |
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Pollen sacs
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See anther thecae. |
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Pollen syntricolpate
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A type of pollen in which the colpi unite at both poles of a pollen grain. |
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Pollen syntricolpate
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A type of pollen in which the colpi unite at both poles of a pollen grain. |
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Pollinarium (plural = pollinaria)
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The pollen-bearing structure of Orchidaceae composed of a viscidium, a stipe, and pollinia. |
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Pollination (pollinate}
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The transfer of pollen from an anther in a flower to the stigma of the same or to a different flower of the same species by pollinators such as the wind, water, insects, and mammals. Pollinate is the act of pollination. |
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Pollinator
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An agent, such as the wind, water, some insects, and some mammals, that moves pollen from an anther in a flower to the stigma of the same flower or to the stigma of a different flower of the same species. |
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Pollinator guide
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Markings on a flower that apparently serve to guide pollinators to pollinator rewards, generally pollen or nectar. Some are visible to humans, but others are apparent to humans only through ultraviolet photography. Same as pollen guide or nectar guide. |
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Pollinator reward
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A general term that refers to a reward that an animal pollinator gets when it visits a flower. The reward is usually pollen or nectar. |
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Pollinium (plural = pollinia)
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An aggregate pollen mass characteristic of Orchidaceae and those of Apocynaceae subfamily Asclepiadoideae. |
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Poly-
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A prefix meaning many. |
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Polyandrous
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Referring to an androecium with numerous stamens. Same as polystemonous. |
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Polycarpy (polycarpic or (polycarpous)
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Referring to plants that flower repeatedly; i.e., those that do not die after a single flowering. Same as iteroparous and pleionanthic; opposite of monocarpic, hapaxanthic and semelparic. |
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Polygamodioecy (polygamodioecious)
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Referring to the sexual condition of a species that bears (male) staminate and bisexual (perfect) flowers on some plants and female (pistillate) and bisexual flowers on other plants. |
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Polygamomonoecy (polygamomonoecious)
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Referring to the sexual condition of a species that bears staminate, pistillate, and bisexual flowers on the same plant. Same as trimonoecious. |
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Polygamous
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Referring to the sexual condition of a species that bears bisexual and unisexual flowers on the same plant, e.g., an andromonoecious plant (with male [staminate] and female [pistillate] species is one example of a polygamous species. |
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Polymorphic
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The occurrence of different forms of the same organ within the same species. |
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Polypetalous corolla
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Having petals free from one another. Same as choripetalous; opposite of sympetalous. |
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Polyphyletic
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The inclusion of more than one evolutionary line in a taxonomic group. |
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Polyploidy
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Referring to a process in which more than two sets of chromosome numbers are present. This is often the result of hybridization. |
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