Reproductive biology of mixed-species populations of Goodyera (orchidaceae) in northern Michigan

@article{Kallunki1981ReproductiveBO,
  title={Reproductive biology of mixed-species populations of Goodyera (orchidaceae) in northern Michigan},
  author={J. Kallunki},
  journal={Brittonia},
  year={1981},
  volume={33},
  pages={137-155}
}
The reproductive biology ofGoodyera oblongifolia, G. repens var.ophioides andG. tesselata is discussed with emphasis on the reproductive isolating mechanisms operating in mixed-species populations. Cytology, phenology and pollination of the above three species were studied. Artificial hybridizations were made of these three species and ofG. pubescens. Results show that within mixed-species populations,G. oblongifolia,G. repens var.ophioides andG. tesselata are not completely isolated… Expand
Population Dynamics and Flowering Synchrony of Goodyera Pubescens (Orchidaceae) in Southwestern Quebec, Canada
TLDR
Two populations of the clonal orchid Goodyera pubescens (Willd.) R. Br. Expand
High level of genetic variation within clonal orchid Goodyera repens
TLDR
The genetic diversity of G. repens is suggested to be mainly an effect of the abundance of pine and spruce forest communities suitable for this species in NE Poland and the high level of sexual reproduction. Expand
THE LEVEL OF AGAMOSPERMY IN A NEBRASKA POPULATION OF SPIRANTHES CERNUA (ORCHIDACEAE)
TLDR
Investigation of reproduction in a prairie population of Spiranthes cernua in eastern Nebraska found that the majority of seeds in a capsule were agamospermous, and attempts were made to manipulate the reproductive system with experimental crosses performed in the field. Expand
Variation in sexual reproduction in orchids and its evolutionary consequences: a spasmodic journey to diversification
TLDR
It is reaffirmed that orchids are primarily pollination limited, the severity of which is affected by resource constraints and population structure, reproductive success and gene flow among populations suggest that in many situations genetic drift may be as important as selection in fostering genetic and morphological variation in this family. Expand
Reproductive biology of Acrolophia cochlearis (Orchidaceae): estimating rates of cross-pollination in epidendroid orchids.
TLDR
The presence of a nectar reward in Acrolophia cochlearis results in high levels of pollen transfer efficiency, and it is estimated that approx. Expand
Pollination biology of Platanthera stricta (Orchidaceae) in Olympic National Park, Washington
TLDR
Platanthera stricta Lindley is entomophilous and can produce seed via facultative self-pollination and intraracemic and interracemic pollination, and is pollinated by a diverse assemblage of short-tongued insects. Expand
Population Genetic Diversity and Structure in Goodyera rosulacea (Orchidaceae), Endemic in Korea, and Implications for Conservation
TLDR
Standard genetic diversity measures within and among populations as well as genetic structure were estimated and a regression analysis between pairwise genetic and geographical distances and correlation analyses between population sizes and estimates of genetic variation within populations were conducted to gain insights into the past evolutionary processes. Expand
Insects and plants in the pollination ecology of the boreal zone
TLDR
It is suggested that insect pollination is as much a keystone process in the boreal forest as elsewhere, despite the immediate counter-impression given by the dominance of wind-pollinated conifers. Expand
Subtribes Goodyerinae and Cranichidinae
TLDR
Bumblebees are the most important pollinators of North American species of Goodyera, but pollinator recruitment appears to be limiting and factors contributing to reproductive success are summarized. Expand
Pollination of Goodyera foliosa var. maximowicziana (Orchidaceae) by the Bumblebee Bombus diversus diversus
Pollination of the orchid Goodyera foliosa var. maximowicziana was studied during the autumn of 1995 and 1996 in Matsue, Japan. The flowers were rarely visited by 5 insect species, among which onlyExpand
...
1
2
...

References

SHOWING 1-10 OF 18 REFERENCES
The Selective Origin of Incompatibility Barriers in the Plant Genus Gilia
  • V. Grant
  • Biology
  • The American Naturalist
  • 1966
TLDR
The inverse correlation between interspecific geographical and crossing relationships provides critical evidence in the case of the Leafy-stemmed Gilias, and supporting evidence for the hypothesis of a selective origin of hybridization-preventing mechanisms in annual plants under conditions of sympatry. Expand
Biosystematics of the genus Piperia Rydb. (Orchidaceae)
TLDR
Thin-layer chromatography of fresh leaf extracts and a morphological assessment revealed discrete, but variable, taxa; however, a high degree of sympatry suggests these species are reproductively isolated. Expand
NATURAL SELECTION FOR REPRODUCTIVE ISOLATION IN PHLOX
TLDR
The term "Wallace effect" has been applied to shifts in population structure whose primary adaptations are to strengthen reproductive isolating barriers and could permit the two species more efficiently to exploit their habitats. Expand
Competition for pollinators as a stimulus for the evolution of flowering time
TLDR
It was found that in the spring, insects competed for flowers but that after the cornucopian species had completed their flowering (throughout the summer), flowers competed for pollinating insects. Expand
POLLINATOR CONSTANCY AS A PRE‐POLLINATION ISOLATING MECHANISM BETWEEN SYMPATRIC SPECIES OF CERCIDIUM
  • C. Jones
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1978
TLDR
The present investigation was undertaken to determine if ultraviolet floral pattern differences beween Cercidium floridum, the Blue Palo Verde, and C. microphyllUM, the Foothill or Small-leaved Palo Verdes act as an effective pre-pollination isolating mechanism between these sympatric, caesalpinaceous legumes. Expand
Ultraviolet floral patterns as functional orientation cues in hymenopterous pollination systems
TLDR
Morphological and physiological changes in the floral colour patterns of both species following pollination appear to inhibit visitation by bees, and the significance of U.V. floral patterns was also considered. Expand
BEE FLOWERS: A HYPOTHESIS ON FLOWER VARIETY AND BLOOMING TIMES
  • B. Heinrich
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1975
TLDR
The functional significance in the variety and in the assortment of flowers visited primarily by bumblebees in one habitat in Maine is determined and may serve as a model applicable to other plant assemblages and pollinators. Expand
THE DEPENDENCE OF BEE‐MEDIATED POLLEN AND GENE DISPERSAL UPON PLANT DENSITY
TLDR
It is shown that bees are highly responsive to plant spacing and that bee-mediated pollen dispersal and associated gene dispersal is strongly correlated with plant spacing, the plant species and floral mechanism notwithstanding. Expand
A Markov Model for Pollinator Constancy and Competition
TLDR
It is concluded that the likelihood of interspecific hybridization and introgression is maximized when one species is infrequent relative to the other. Expand
Floral colors in the high arctic with reference to insect–flower relations and pollination
Some review, concepts, terminology, and methods are given towards the description of colors, here, of flowers of the high arctic flora of the Canadian Arctic Archipelago, in the insect (includingExpand
...
1
2
...