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Tragopogon Heteropappus
''Tragopogon'', also known as goatsbeard or salsify, is a genus of flowering plants in the family Asteraceae. It includes the vegetable known as salsify, as well as a number of common wild flowers. Salsifies are forbs growing as biennial or perennial plants. They have a strong taproot and milky sap. They generally have few branches, and those there are tend to be upright. Their leaves are somewhat grass-like. Flower colour varies within the genus, with some yellow species, and some bronze or purple. Seeds are achenes and are borne in a globe like that of a dandelion but larger, and are dispersed by the wind. The salsifies are mostly natives of Europe and Asia, but several species have been introduced into North America and Australia and have spread widely there. There is one species sometimes considered native to North America, ''Tragopogon mirus'', but it is in fact a hybrid of two non-native species. Some of the more common species of ''Tragopogon'' are known, in the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragopogon Porrifolius
''Tragopogon porrifolius'' is a species of plant. It is commonly known as purple or common salsify, oyster plant, vegetable oyster, Jerusalem star, Jack go to bed, goatsbeard, or simply salsify. These last two names are also applied to other species. It grows wild in many places and is one of the most widely known species of the salsify genus, ''Tragopogon''. It is cultivated for its ornamental flower and edible root. Description The plant grows to in height. As with other ''Tragopogon'' species, its stem is largely unbranched and the leaves are somewhat grasslike, up to long. It exudes a milky juice from the stems. The taproots can become long and thick. It typically flowers from June to September, but in warmer areas such as California it can be found in bloom from April. The flower head is purple and across and each is surrounded by 8–9 tapered bracts which are longer than the petals (technically, the ligules of the ray flowers). The flowers are hermaphrodite, hermap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragopogon Mirus
''Tragopogon mirus'', the remarkable goatsbeard, is a plant species considered native to certain regions of North America. Intensive studies over the course of many years have demonstrated that it originated as an allopolyploid hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ... between '' T. dubius'' and '' T. porrifolius'', both of which are European species naturalized in the US. ''Tragopogon mirus'' has become established in the wild, reproducing by its own, thus deserving recognition as a species.Ownbey, M. 1950. Natural hybridization and amphiploidy in the genus ''Tragopogon''. American Journal of Botany 37:487-499. ''Tragopogon mirus'' is an herb up to 150 cm (60 inches) tall. Leaves are slightly tomentose when young, nearly glabrous when fully mature. Leaf apice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyploid
Polyploidy is a condition in which the biological cell, cells of an organism have more than two paired sets of (Homologous chromosome, homologous) chromosomes. Most species whose cells have Cell nucleus, nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one from each of two parents; each set contains the same number of chromosomes, and the chromosomes are joined in pairs of homologous chromosomes. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A Ploidy, monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have Biological life cycle, life cycles with two alternation of generations, alternating multicellular generations. The gamet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraploid
Polyploidy is a condition in which the cells of an organism have more than two paired sets of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one from each of two parents; each set contains the same number of chromosomes, and the chromosomes are joined in pairs of homologous chromosomes. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis; the sporophyte generation is diploid and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragopogon Miscellus
''Tragopogon miscellus'', the Moscow salsify, is a species native to the States of Washington and Idaho. Intensive studies over the course of many years have demonstrated that it originated as an allopolyploid hybrid between '' T. dubius'' and '' T. pratensis'', both of which are European species naturalized in the US. ''Tragopogon miscellus'' has become established in the wild, reproducing by its own, thus deserving recognition as a species.Ownbey, M. 1950. Natural hybridization and amphiploidy in the genus ''Tragopogon''. American Journal of Botany 37:487-499. ''Tragopogon miscellus'' is an herb up to 150 cm (60 inches) tall. Leaves are slightly tomentose when young, nearly glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ... when mature, with a tip that is recoiled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington (state)
Washington, officially the State of Washington, is a U.S. state, state in the Pacific Northwest region of the United States. It is often referred to as Washington State to distinguish it from Washington, D.C., the national capital, both named after George Washington (the first President of the United States, U.S. president). Washington borders the Pacific Ocean to the west, Oregon to the south, Idaho to the east, and shares Canada–United States border, an international border with the Provinces and territories of Canada, Canadian province of British Columbia to the north. Olympia, Washington, Olympia is the List of capitals in the United States, state capital, and the most populous city is Seattle. Washington is the List of U.S. states and territories by area, 18th-largest state, with an area of , and the List of U.S. states and territories by population, 13th-most populous state, with a population of just less than 8 million. The majority of Washington's residents live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Idaho
Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), Washington and Oregon to the west; the state shares a small portion of the Canada–United States border to the north with the Canadian province of British Columbia. Idaho's State capital (United States), state capital and largest city is Boise, Idaho, Boise. With an area of , Idaho is the List of U.S. states and territories by area, 14th-largest state by land area. The state has a population of approximately two million people; it ranks as the List of U.S. states and territories by population, 13th-least populous and the List of U.S. states by population density, seventh-least densely populated of the List of US states, 50 U.S. states. For thousands of years, and prior to European colonization, Idaho had been inhabited by Native American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meadow Salsify
''Tragopogon pratensis'' (common names Jack-go-to-bed-at-noon, meadow salsify, showy goat's-beard or meadow goat's-beard) is a biennial plant in the family Asteraceae. It flowers between June and October. It is distributed across Europe and North America, commonly growing in fields. The root and buds are edible, and it has a milky latex. Description The plant grows up to tall. The lower leaves are 10 to 30 cm long, lanceolate, keeled lengthwise, grey-green, pointed, hairless, with a white midrib. The upper leaves are shorter and more erect. It is the only United Kingdom dandelion-type flower with grasslike leaves. On display between June and October, the flower heads are yellow and wide. They only open in the morning sunshine, hence the name 'Jack go to bed at noon'. The achenes are rough, long beaked pappus radiating outwards interwoven like a spider's web of fine white side hairs (referred to as a "blowball"). Similar species It differs from viper's-grass (''Scor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragopogon Dubius
''Tragopogon dubius'', commonly known as yellow salsify, is a species of salsify with yellow flower heads. It is native to Eurasia and has been introduced to North America. Description Like most salsifies, ''Tragopogon dubius'' grows as an annual or occasionally biennial forb, reaching a height of . The leaves are up to long. The buds are blue-green, tall, and tapered. On display from late spring to late summer, the yellow flower head is wide. The inflorescence opens early in the morning and often closes up by late afternoon. Later, the plant forms a seed head resembling that of dandelions, but distinctly larger. The seeds (known as achenes) are 2–4 cm long but featherweight, weighing about 8 mg each on average. There is some natural variation between the central and peripheral achenes in the seedhead, with the peripheral ones being generally darker and heavier, and having a higher concentration of phenolic compounds; this may enhance their survival potential ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Speciation
Hybrid speciation is a form of speciation where hybridization between two different species leads to a new species, reproductively isolated from the parent species. Previously, reproductive isolation between two species and their parents was thought to be particularly difficult to achieve, and thus hybrid species were thought to be very rare. With DNA analysis becoming more accessible in the 1990s, hybrid speciation has been shown to be a somewhat common phenomenon, particularly in plants. In botanical nomenclature, a hybrid species is also called a nothospecies. Hybrid species are by their nature polyphyletic. Ecology A hybrid may occasionally be better fitted to the local environment than the parental lineage, and as such, natural selection may favor these individuals. If reproductive isolation is subsequently achieved, a separate species may arise. Reproductive isolation may be genetic, ecological, behavioral, spatial, or a combination of these. If reproductive isolation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
