Results 161 to 170 of about 1,510 (202)

EXPERIMENTAL STUDIES ON THE FUNCTIONAL SIGNIFICANCE OF HETEROSTYLY [PDF]

open access: yesEvolution; International Journal of Organic Evolution, 1992
Heterostyly has been viewed as both an antiselfing device and a mechanism that increases the proficiency of pollen transfer between plants. We used experimental manipulation of the morph structure of garden populations of self-compatible, tristylous Eichhornia paniculata to investigate the function of floral polymorphism.
Spencer Charles Hilton Barrett
exaly   +3 more sources

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.
B. McClure
semanticscholar   +3 more sources

The nonreciprocal heterostyly and heterotypic self-incompatibility of Ceratostigma willmottianum

Journal of Plant Research, 2021
Ceratostigma willmottianum (Plumbaginaceae) is a perennial herb native to China. Many species of Plumbaginaceae have been reported to exhibit heterostyly. Determining the functional breeding system of C. willmottianum can improve our understanding of the reproductive ecology of heterostylous plants.
Su-Ping Gao   +8 more
semanticscholar   +3 more sources

The Evolutionary Breakdown of Heterostyly

The Evolutionary Ecology of Plants, 2019
S. Barrett
semanticscholar   +2 more sources

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
openaire   +1 more source

Heterostyly promotes disassortative pollination and reduces sexual interference in Darwin's primroses: evidence from experimental studies

open access: yes, 2014
Different strategies to reduce selfing and promote outcrossing have evolved in hermaphroditic flowers. Heterostyly, a complex floral polymorphism that occurs in at least 27 families of angiosperms, is hypothesized to achieve both goals by optimizing ...
B. Keller, J. Thomson, E. Conti
semanticscholar   +2 more sources

The Selection of Heterostyly

1992
Since heterostyly became well known over a century ago, botanists have consistently proposed that its adaptive significance lies in the encouragement it provides for outcrossing. Darwin (1877, p. 258) for example, wrote that “We may feel sure that plants have been rendered heterostyled to ensure cross-fertilization, for we know that a cross between the
D. G. Lloyd, C. J. Webb
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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