Results 121 to 130 of about 1,101 (151)
Plant Biology, 2011 AbstractPlants with multiple flowers could be prone to autonomous self‐pollination and insect‐mediated geitonogamy, but physiological and ecological features have evolved preventing costs related to autogamy. We studied the rare perennial herb Dictamnus albus as a model plant, with the aim of describing the plant–pollinator system from both plant and ...
FISOGNI, ALESSANDRO +3 more
semanticscholar +6 more sources
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Geitonogamy: The neglected side of selfing
Trends in Ecology and Evolution, 1993Flowers of many angiosperm species are well adapted to avoid self-pollination, for instance by temporal and spatial separation of pollen and stigma within the same flower. However, such adaptations do not prevent the transfer of pollen between flowers on the same plant (geitonogamy).
Tom J De Jong +2 more
exaly +4 more sources
Contributions of Autogamy and Geitonogamy to Self-Fertilization in a Mass-Flowering, Clonal Plant
Ecology, 2000The fitness consequences of self-fertilization are largely determined by how self-pollination occurs. Within-flower self-pollination (autogamy) may be advantageous, since it can provide reproductive assurance without much seed or pollen discounting. In contrast, between-flower self-pollination (geitonogamy) provides no reproductive assurance and can ...
Christopher G Eckert
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American Journal of Botany, 1996
Opportunities for selfing through geitonogamy are possible if more than one flower within the same clone, inflorescence, or floral unit is open at the same time. In a total of 200 inflorescences in two natural populations of Iris versicolor, flowers were observed and classified daily on the basis of anther dehiscence and stigma receptivity. Analysis of
Paul Kron
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Opportunities for selfing through geitonogamy are possible if more than one flower within the same clone, inflorescence, or floral unit is open at the same time. In a total of 200 inflorescences in two natural populations of Iris versicolor, flowers were observed and classified daily on the basis of anther dehiscence and stigma receptivity. Analysis of
Paul Kron
exaly +5 more sources
GEITONOGAMY IN ANIMAL POLLINATED TROPICAL ANGIOSPERMS
TAXON, 1976 SummaryRecent reproductive biology studies reveal high levels of self‐incompatibility in species diverse tropical communities. Many tropical trees are animal pollinated, pollen transfer patterns closely following the energetics of foraging. The energy output (in the form of nectar, pollen and other food bodies) of a single massively flowering tropical ...
M. Arroyo
semanticscholar +3 more sources
Reduction of geitonogamy: Flower abscission for departure of pollinators
Ecological Research, 2003Overproduction of flowers increases the attractiveness of a plant to pollinators, but results in increased geitonogamy. In general, flower abscission has been considered to be an event subsequent to the overproduction of flowers. We observed pollinator behavior in Tilia, a self‐incompatible ...
Kihachiro Kikuzawa
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Systematic Increase in Pollen Carryover and Its Consequences for Geitonogamy in Plant Populations
Oikos, 1994The fraction of pollen that is carried over from one flower to the next as a pollinator visits a sequence of flowers has a strong effect on patterns or mating in plant populations. Although most studies have used simple exponential or geometric functions to represent carryover, pollen deposition patterns often show longer-than-geometrics tails ...
W F Morris, Mary V Price
exaly +3 more sources
Biological Journal of the Linnean Society, 1992
The relative amounts of self- and cross-pollen deposited on stigmas depends on both the number of pollinator visits that occur within plants and the amount of pollen carryover. Data collected for Myosotis colensoi (Kirk) Macbride and compiled from a survey of the literature, reveal that pollen carryover is frequently very high (upwards of 80%) and this
Alastair W Robertson +1 more
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The relative amounts of self- and cross-pollen deposited on stigmas depends on both the number of pollinator visits that occur within plants and the amount of pollen carryover. Data collected for Myosotis colensoi (Kirk) Macbride and compiled from a survey of the literature, reveal that pollen carryover is frequently very high (upwards of 80%) and this
Alastair W Robertson +1 more
exaly +3 more sources
Plant size, geitonogamy and seed set in Ipomopsis aggregata
Oecologia, 1992We used powdered fluorescent dyes to estimate receipt of self vs. outcross pollen in the self-incompatible species Ipomopsis aggregata (Polemoniaceae). Flowers on small and large plants received equal amounts of outcross pollen, whereas flowers on large plants received more self pollen, so the proportion of self pollen delivered through geitonogamy ...
Tom J, de Jong +3 more
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The Contribution of Display Size and Dichogamy to Potential Geitonogamy in Campanula americana
International Journal of Plant Sciences, 2002An increase in floral display size may enhance fitness by increasing a plant’s attractiveness to pollinators. Alternatively, a larger display may reduce fitness by increasing pollen movement within an individual. In dichogamous species the frequency of this geitonogamy also depends on floral gender ratio and pollinator response to floral gender and to ...
Laura F. Galloway +2 more
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