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Silene Capraria
''Silene'' is a genus of flowering plants in the family Caryophyllaceae. Containing nearly 900 species, it is the largest genus in the family. Common names include campion and catchfly. Many ''Silene'' species are widely distributed, particularly in the northern hemisphere. Scientific history Members of this genus have been the subject of research by preeminent plant ecologists, evolutionary biologists, and geneticists, including Charles Darwin, Gregor Mendel, Carl Correns, Herbert G. Baker, and Janis Antonovics. Many ''Silene'' species continue to be widely used to study systems, particularly in the fields of ecology and evolutionary biology.Bernasconi et al. 2009. Silene as a model system in ecology and evolution. Heredity. 103:5-14. PMI19367316/ref> The genus has been used as a model for understanding the genetics of sex determination for over a century. ''Silene'' species commonly contain a mixture of hermaphroditic and female (or male-sterile) individuals (gynodioecy), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silene Dioica
''Silene dioica'' (synonym (taxonomy), syn. ''Melandrium rubrum''), known as red campion and red catchfly, is a herbaceous flowering plant in the family Caryophyllaceae, native to Europe and introduced to the Americas. Description It is a biennial plant, biennial or perennial plant, The plant grows to tall, with branching stems. The deep green leaves are in opposite leaves, opposite and Glossary of botanical terms, decussate pairs, simple acute ovate, long with an untoothed margin; both the leaves and stems of the plant are hairy and slightly sticky. The upper leaves are stalkless. Blooming from May to October, the unscented flowers are dark pink to red, each across. There are five petals which are deeply notched at the end, narrowed at the base and all go into an urn-shaped sepal, calyx. As indicated by the specific name, male and female flowers are borne on separate plants (Dioecy, dioecious), the male with 10 stamens and a 10-veined calyx, the female with 5 styles and a 20- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (botany)
In botany, a section () is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section; and the rank of Series (botany), series, if present, is below the section. Sections may in turn be divided into subsections.Article 4 in Sections are typically used to help organise very large genera, which may have hundreds of species. A botanist wanting to distinguish groups of species may prefer to create a taxon at the rank of section or series to avoid making combinatio nova, new combinations, i.e. many new Binomial nomenclature, binomial names for the species involved. Examples: * ''Lilium'' sectio ''Martagon'' Rchb. are the Turks' cap lilies * ''Plagiochila aerea'' Taylor is the type species of ''Plagiochila'' sect. ''Bursatae'' See also * Section (biology) References Plant sections, Botanical nomenclature, Section Plant taxonomy Fungus sections {{Botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadena Bicruris
The lychnis (''Hadena bicruris'') is a moth of the family Noctuidae. It is found in northern and western Europe and Turkey. It has an Atlantic-Mediterranean distribution. In the East Palearctic it is replaced by '' Hadena capsincola''. Description This species has dark brown forewings marked with two prominent white-bordered stigmata and a white subterminal line. The hindwings are buffish, darkening to brown towards the margin but with a prominent white fringe. Seitz states - Distinguished from '' rivularis'' F. by the absence of the violet sheen; the markings white instead of yellow; the upper stigmata not conjoined; a conspicuous black blotch above inner margin near base; hindwing fuscous. Larva dull brown, with darker dorsal line and oblique subdorsal streaks. Similar species *'' Hadena capsincola'' has only been listed as an independent species since 1996 after a reworking of the genus ''Hadena'' by Hacker. While ''H. bicruris'' is mainly native to Western Europe, ''H. capsinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dionysus
In ancient Greek religion and Greek mythology, myth, Dionysus (; ) is the god of wine-making, orchards and fruit, vegetation, fertility, festivity, insanity, ritual madness, religious ecstasy, and theatre. He was also known as Bacchus ( or ; ) by the Greeks (a name later adopted by the Ancient Rome, Romans) for a frenzy he is said to induce called ''baccheia''. His wine, music, and ecstatic dance were considered to free his followers from self-conscious fear and care, and subvert the oppressive restraints of the powerful. His ''thyrsus'', a fennel-stem sceptre, sometimes wound with ivy and dripping with honey, is both a beneficent wand and a weapon used to destroy those who oppose his Cult of Dionysus, cult and the freedoms he represents. Those who partake of his mysteries are believed to become possessed and empowered by the god himself. His origins are uncertain, and his cults took many forms; some are described by ancient sources as Thrace, Thracian, others as Greek. In O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silenus
In Greek mythology, Silenus (; , ) was a companion and tutor to the wine god Dionysus. He is typically older than the satyrs of the Dionysian retinue ('' thiasos''), and sometimes considerably older, in which case he may be referred to as a Papposilenus. ''Silen'' and its plural ''sileni'' refer to the mythological figure as a type that is sometimes thought to be differentiated from a satyr by having the attributes of a horse rather than a goat, though usage of the two words is not consistent enough to permit a sharp distinction. Silenus presides over other daimons and is related to musical creativity, prophetic ecstasy, drunken joy, drunken dances and gestures. In the decorative arts, a "silene" is a Silenus-like figure, often a "mask" (face) alone. Evolution The original Silenus resembled a folkloric man of the forest, with the ears of a horse and sometimes also the tail and legs of a horse. The later sileni were drunken followers of Dionysus, usually bald and fat with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gynomonoecious
Gynomonoecy is defined as the presence of both female and hermaphrodite flowers on the same individual of a plant species. It is prevalent in Asteraceae but is poorly understood. It is a monomorphic sexual system comparable with monoecy, andromonoecy and trimonoecy. Occurrence This sexual system occurs in about 2.8% of flowering plants. It is present in 3% of ''Silene'' species and 23 families of flowering plants, but is most common in the daisy family, Asteraceae. Of the approximately 23000 species in the Asteraceae about 200 are gynomonoecious. Evolution Gynomonoecy may be an intermediate evolutionary state between monoecy and hermaphroditism. It is also postulated to be the ancestor to trimonoecy. Gynomonecy evolved once in Hawaiian ''Tetramolopium''. In families like Compositae or Chenopodiaceae Amaranthaceae ( ) is a family of flowering plants commonly known as the amaranth family, in reference to its type (biology), type genus ''Amaranthus''. It includes the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andromonoecious
Andromonoecy is a breeding system of plant species in which male and hermaphrodite flowers are on the same plant. It is a monomorphic sexual system comparable with monoecy, gynomonoecy and trimonoecy. Andromonoecy is frequent among genera with zygomorphic flowers, however it is overall rare and occurs in less than 2% of plant species. Nonetheless the breeding system has gained interest among biologists in the study of sex expression. Etymology The word andromonoecious is a combination of andr- (meaning male) and monoecious and was first used in 1877. Prevalence Andromonoecy is uncommon and has been estimated to occur in less than 2% of plant species. In angiosperms, it occurs in 1.7% of angiosperms making up around 4000 species in 33 families. It is common in the grass subfamily Panicoideae. Andromonoecious species * ''Cucumis melo'' subsp * ''Cucumis melo'' * '' Chaerophyllum bulbosum'' * '' Erophaca baetica'' * '' Silene tibetica'' ''Solanum'' * '' Solanum agnewioru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trioecy
Trioecy , also spelled triecy, is a sexual system characterized by the coexistence of males, females, and hermaphrodites. It has been found in both plants and animals. Like androdioecy and gynodioecy, trioecy is a mixed mating systems. Terminology Trioecy is also called tridioecy and subdioecy . The term trioecy comes from the Neo-Latin word '' Trioecia'', a former order of trioecious plants. Evolution of trioecy Trioecy may be an unstable transient state associated with evolutionary transitioning from gynodioecy to dioecy. In brachiopod species, trioecy usually breaks into androdioecy or gynodioecy. Other studies show that trioecious populations originated from gonochoristic ancestors which were invaded by a mutant selfing hermaphrodite, creating a trioecious population. It has been suggested that chromosomal duplication plays an important part in the evolution of trioecy. But one study found that trioecy can be stable under nucleocytoplasmic sex determination. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gynomonoecious
Gynomonoecy is defined as the presence of both female and hermaphrodite flowers on the same individual of a plant species. It is prevalent in Asteraceae but is poorly understood. It is a monomorphic sexual system comparable with monoecy, andromonoecy and trimonoecy. Occurrence This sexual system occurs in about 2.8% of flowering plants. It is present in 3% of ''Silene'' species and 23 families of flowering plants, but is most common in the daisy family, Asteraceae. Of the approximately 23000 species in the Asteraceae about 200 are gynomonoecious. Evolution Gynomonoecy may be an intermediate evolutionary state between monoecy and hermaphroditism. It is also postulated to be the ancestor to trimonoecy. Gynomonecy evolved once in Hawaiian ''Tetramolopium''. In families like Compositae or Chenopodiaceae Amaranthaceae ( ) is a family of flowering plants commonly known as the amaranth family, in reference to its type (biology), type genus ''Amaranthus''. It includes the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gynodioecy
Gynodioecy is a rare breeding system that is found in certain flowering plant species in which female and hermaphroditic plants coexist within a population. Gynodioecy is the evolutionary intermediate between hermaphroditism (exhibiting both female and male parts) and dioecy (having two distinct morphs: male and female). Gynodioecy is sometimes considered a mixed mating system comparable with trioecy and androdioecy. It is also considered a dimorphic sexual system alongside dioecy and androdioecy. Gynodioecy occurs as a result of transmission of nuclear (nuclear male sterility) or, more commonly, extra-nuclear (e.g. cytoplasmic male sterility) mutated alleles, which prevents pollen production, while keeping the female reproductive parts intact; other members of the species population don't inherit the mutated alleles, thus remaining hermaphrodites. In some cases, a combination of both nuclear and extra-nuclear mechanisms is observed in determining the sterile phenotype ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioecy
Dioecy ( ; ; adj. dioecious, ) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is biparental reproduction. Dioecy has costs, since only the female part of the population directly produces offspring. It is one method for excluding self-fertilization and promoting allogamy (outcrossing), and thus tends to reduce the expression of recessive deleterious mutations present in a population. Plants have several other methods of preventing self-fertilization including, for example, dichogamy, herkogamy, and self-incompatibility. In zoology In zoology, dioecy means that an animal is either male or female, in which case the synonym gonochory is more often used. Most animal species are gonochoric, almost all vertebrate species are gonochoric, and all bird and mammal species are gonochoric. Dioecy may also describe colonies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
