A smaller stigma-anther separation in annuals seems to indicate a genetic basis for mating system differences.
Tag - herkogamy
Erin Zimmerman
Are ants a benefit or a detriment when they occupy a plant? New research says they may be both.
Research in two new papers shows how ants can interfere with pollination, but this interference is complicated.
Alun Salt
Not All Scarlet Pimpernels Arrange Their Sexual Organs the Same Way to Avoid Pollinating Themselves
When there are unsuitable partners around, Lysimachia arvensis, will alter its herkogamy to favour self pollination over outcrossing with the wrong flowers
Alex Assiry
Accurate position exchange of stamen and stigma resolves the herkogamy dilemma in a protandrous plant, Ajuga decumbens (Labiatae)
Spatial separation of stamen and stigma (herkogamy) is an effective way for angiosperm species to reduce sexual interference and prevent self-pollination. It can however also reduce the possibility of pollinators...
William Salter
Flowers evolve to balance the risks and rewards of self-pollination
The longer a plant waits to self-pollinate, the longer it has to attract pollen from outside. But waiting too long can have consequences.
Herkogamy and dichogamy in style dimorphic flowers of Narcissus broussonetii (Amaryllidaceae)
Across the plant kingdom, there is an extraordinary diversity of flower forms, many of which are related to variation in the morphology and arrangement of reproductive organs. To prevent self-pollination, plants have...
Outbreeding and inbreeding strategies in plant communities of the Venezuelan Gran Sabana Plateau
Ramírez and Hokche evaluated the breeding system, sexual system, dichogamy and herkogamy of herbaceous-shrubby communities from the Gran Sabana Plateau, Venezuela
The impact of floral morphology on genetic differentiation in two closely related biennial plant species
The genetic diversity and structure of plant populations are determined by the interaction of gene flow, genetic drift and natural selection. These processes are to some extent dependent on the mating system of plants...
Evolution of mating system, life history, and photosynthetic physiology in Clarkia
In the western United States, Clarkia (Onagraceae) taxa vary in mating system, life history, and photosynthetic physiology. Self-fertilizing taxa bloom earlier in the year and have higher rates of photosynthesis than...
botanyone
Flower-level developmental plasticity and mating system in Datura
Reductions in herkogamy with flower positions may be expected in environments with either low pollinator abundance or low nutrients.
Hawkmoth pollination syndrome and adaptive floral integration
Flowers have often been characterised as functionally integrated units, but it has been difficult to demonstrate adaptive floral integration against a background of conserved correlations among floral whorls due to...
In the right place at the right time for pollination
Parnassia epunctulata, a herb with generalized pollination, which exhibits sequential stamen movement.
AJ Cann
Floral longevity and autonomous selfing in Collinsia
Under drought stress, cross-pollination early in floral lifespan of Collinsia reduces floral longevity, but excess soil moisture does not extend longevity.
Variation and evolution of herkogamy in Exochaenium
The spatial separation of stigmas and anthers (herkogamy) functions to reduce self-pollination and avoid interference between pollen dispersal and receipt. Little is known about the evolutionary relationships among the...
