Results 161 to 170 of about 660 (188)

The Evolution of Heterostyly

1992
Charles Darwin was fascinated by the phenomenon of heterostyly. He described (1862, 1877) how he first thought that pin and thrum plants of Primula species represented female and male sexes respectively, but found that they were both functionally hermaphroditic. He demonstrated the infertility of self-pollinations and crosses between plants of the same
D. G. Lloyd, C. J. Webb
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The Genetics of Heterostyly

1992
Breeding experiments on the genetics of heterostyly began in the 19th century led by Hildebrand (1866) and by Darwin (1877), before Mendel’s work was rediscovered in 1900. Bateson and Gregory (1905) introduced their paper on the inheritance of heterostylism in Primula with the statement: “In view of the results obtained by Darwin, Hildebrand and others,
D. Lewis, D. A. Jones
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Heterostyly inBiophytum sensitivum DC

Journal of Genetics, 1964
Heterostylism inBiophytum sensitivum DC. is described with measurements of style and anther lengths and pollen grain diameters. The fertility of different crosses is compared. One type of illegtimate union is moderately fertile.
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Reproduction: The genetic basis of heterostyly

Nature Plants, 2016
Two recent studies revealed the genetic architecture of the long fascinating heterostyly in Primula and that the absence of a CYPT gene determines the long style morph.
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Evolution and function of heterostyly

Trends in Ecology & Evolution, 1992
A century of research on heterostylous plants has passed since the publication of Charles Darwin's book "The Different Forms of Flowers on Plants of the Same Species" in 1877 summarizing his extensive observations and experiments on these complex breeding systems involving genetic polymorphisms of floral sex organs.
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The biology of heterostyly

New Zealand Journal of Botany, 1979
Abstract Heterostyly is a genetically controlled floral polymorphism that is known to occur in 24 families of flowering plants. The floral morphs differ reciprocally in stamen and style lengths. They often differ in pollen grain size and production, and may differ in pollen exine sculpturing, pollen colour, presence of starch in pollen, stigmatic ...
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The Development of Heterostyly

1992
Heterostyly is a genetic polymorphism in which the two (distyly) or three (tristyly) mating types in a population differ in floral morphology. The principal feature that distinguishes the floral morphs is that they differ in stigma and anther heights. The sex organs are reciprocally positioned with anthers in flowers of one morph at the same level as ...
J. H. Richards, S. C. H. Barrett
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Heterostyly in Erythroxylum coca (Erythroxylaceae)

Botanical Journal of the Linnean Society, 1979
Erythroxylum coca is a distylous species with a strong self-incompatibility system linked with the floral dimorphism.
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Heterostyly inEichhornia crassipes (Mart.) Solms

Journal of Genetics, 1968
The morphology of the mid styled form ofEichhornia crassipes (Mart.) Solms., a species of the family Pontederiaceae is described. Pollen grains from the long anther tier are large and those of the short anther tier are small. Mid style is incompatible in nature. Selfings with the short and Jong anthers produce seeds. The seeds are inviable.
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HETEROSTYLY IN MITCHELLA REPENS (RUBIACEAE)

1979
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Keegan, Christine R, Voss, Robert H, Bawa, Kamaljit S.   +2 more
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