Results 171 to 180 of about 827 (191)

HETEROSTYLY IN LITHOSPERMUM COBRENSE (BORAGINACEAE)

American Journal of Botany, 1979
Lithospermum cobrense Greene exhibits the floral dimorphisms and strong self‐incompatibility system typical of most distylous plants. Flowers of the long styled (pin) form produce smaller pollen grains but more pollen per flower than flowers of the short styled (thrum) form. Corollas of pins and thrums are equal in size.
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Heterostyly inOldenlandia scopulorum bull.

Journal of Genetics, 1966
Heterodistyly inOldenlandia scopulorum Bull., a member of the Rubiaceae, is described. The species is characterised by two floral forms, the pin with long style and short anthers and thrum with short style and long anthers. Further the pin has small pollen grains and long stigmatic papillae while the thrum has large pollen grains and short stingmatic ...
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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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A MORPHOLOGICAL HYPOTHESIS FOR THE ORIGIN OF HETEROSTYLY IN THE RUBIACEAE

TAXON, 1973
SummaryDimorphic heterostyly is common in the Rubiaceae, distributed throughout the family in a way that suggests that it has evolved repeatedly. In its essentials this heterostyly suggests protandry in which some plants have normal elongation of the styles and others have precocious maturation of the stigmas at a stage of arrested elongation of the ...
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The Origin of Dioecism from Heterostyly in Nymphoides (Menyanthaceae)

Evolution, 1966
Heterostyly refers to a relatively rare combination of morphological, physiological, and genetic mechanisms which promotes outbreeding in certain angiosperms. Under conditions where the selective forces favoring this degree of outbreeding are reduced or removed, one or all of the components of this character complex may break down with the result that ...
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Homostyly and heterostyly inOldenlandia umbellata L

Journal of Genetics, 1970
Homostyly in heterostyledOldenlandia umbellata L., a species of the family Rubiaeeae is described. Homestyles are of the short styled type. Measurements of homostyles are compared with the heterostyles. On the basis of self fertility the homostyles are named fertile and infertile.
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Heterostylie-Forschung

Zeitschrift für Induktive Abstammungs- und Vererbungslehre, 1936
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Transcriptome and Network Analyses of Heterostyly in Turnera subulata Provide Mechanistic Insights: Are S-Loci a Red-Light for Pistil Elongation?

Plants, 2020
Paige M Henning, Joel S Shore, Andrew G Mccubbin   +2 more
exaly  

Heterostyly and Gynodioecism

Botanical Gazette, 1906
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‘A most complex marriage arrangement’: recent advances on heterostyly and unresolved questions

New Phytologist, 2019
Spencer C H Barrett
exaly