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Hypogeal Germination
Hypogeal germination (from Ancient Greek [] 'below ground', from [] 'below' and [] 'earth, ground') is a botanical term indicating that the germination of a plant takes place below the ground. An example of a plant with hypogeal germination is the pea (''Pisum sativum''). The opposite of hypogeal is epigeal (above-ground germination). __TOC__ Germination Hypogeal germination implies that the cotyledons stay below the ground. The epicotyl (part of the stem above the cotyledon) grows, while the hypocotyl (part of the stem below the cotyledon) remains the same in length. In this way, the epicotyl pushes the plumule above the ground. Normally, the cotyledon is fleshy, and contains many nutrients that are used for germination. Because the cotyledon stays below the ground, it is much less vulnerable to, for example, night-frost or grazing. The evolutionary strategy is that the plant produces a relatively low number of seeds, but each seed has a bigger chance of surviving. Pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phaseolus
''Phaseolus'' (bean, wild bean) is a genus of herbaceous to woody annual and perennial vines in the family Fabaceae containing about 70 plant species, all native to the Americas, primarily Mesoamerica. It is one of the most economically important legume genera. Five of the species have been domesticated since pre-Columbian times for their beans: '' P. acutifolius'' (tepary bean), '' P. coccineus'' (runner bean), '' P. dumosus'' (year bean), '' P. lunatus'' (lima bean), and '' P. vulgaris'' (common bean). Most prominent among these is the common bean, ''P. vulgaris'', which today is cultivated worldwide in tropical, semitropical, and temperate climates. Ecology ''Phaseolus'' species are used as food plants by the larvae of some Lepidoptera species, including common swift, garden dart, ghost moth '' Hypercompe albicornis'', '' H. icasia'' and the nutmeg. Etymology The generic name ''Phaseolus'' was introduced by Linnaeus in 1753,Linnaeus, ''Species Plantarum'' 2:623, cited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James A
James may refer to: People * James (given name) * James (surname) * James (musician), aka Faruq Mahfuz Anam James, (born 1964), Bollywood musician * James, brother of Jesus * King James (other), various kings named James * Prince James (other) * Saint James (other) Places Canada * James Bay, a large body of water * James, Ontario United Kingdom * James College, York, James College, a college of the University of York United States * James, Georgia, an unincorporated community * James, Iowa, an unincorporated community * James City, North Carolina * James City County, Virginia ** James City (Virginia Company) ** James City Shire * James City, Pennsylvania * St. James City, Florida Film and television * James (2005 film), ''James'' (2005 film), a Bollywood film * James (2008 film), ''James'' (2008 film), an Irish short film * James (2022 film), ''James'' (2022 film), an Indian Kannada-language film * "James", a television Adventure Time (season 5)#ep42, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araucaria
''Araucaria'' (; original pronunciation: [a.ɾawˈka. ɾja]) is a genus of evergreen coniferous trees in the family Araucariaceae. While today they are largely confined to the Southern Hemisphere, during the Jurassic and Cretaceous they were globally distributed. There are 20 extant taxon, extant species in New Caledonia (where 14 species are endemism, endemic, see New Caledonian Araucaria, New Caledonian ''Araucaria''), eastern Australia (including Norfolk Island), New Guinea, Argentina, Brazil, Chile and Uruguay. The genus is familiar to many people as the genus of the distinctive Chilean pine or monkey-puzzle tree (''Araucaria araucana''). No distinct vernacular name exists for the genus. Many are called "pine", although they are only distantly related to true pines, in the genus ''Pinus''. Description ''Araucaria'' are mainly large trees with a massive erect stem, reaching a height of . The horizontal, spreading branches grow in whorls and are covered with leather ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lily Seed Germination Types
Lilies seed germination is classified as either epigeal or hypogeal. These classifications may be further refined as immediate or delayed. Whether a lily is epigeal or hypogeal may be related to survival strategies developed according to the climate where the lily originated. Epigeal lilies evolved in moderate climates. Hypogeal lilies evolved in harsher habitats where it would be advantageous to store food in a bulb, and later send up leaves in the spring. Epigeal Lilies Asiatic lilies include species of ''Lilium lancifolium'' (syn.tigrinum), ''L. cernuum'', ''L. davidii'', ''L. maximowiczii'', ''L. macultum'', ''L. hollandicum'', ''L. amabile'', ''L. pumilum'', ''L. concolor'', and ''L. bulbiferum''. Epigeal trumpet lily species are ''L. leucanthum'', ''L. ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lilium
''Lilium'' ( ) is a genus of Herbaceous plant, herbaceous flowering plants growing from bulbs, all with large and often prominent flowers. Lilies are a group of flowering plants which are important in culture and literature in much of the world. Most species are native to the Northern Hemisphere and their range is temperate climates and extends into the subtropics. Many other plants have "lily" in their common names, but do not belong to the same genus and are therefore not true lilies. True lilies are known to be highly toxic to cats. Description Lilies are tall perennial plant, perennials ranging in height from . They form naked or tunicless scaly underground bulbs which are their organs of perennation. In some North American species the base of the bulb develops into rhizomes, on which numerous small bulbs are found. Some species develop stolons. Most bulbs are buried deep in the ground, but a few species form bulbs near the soil surface. Many species form stem-roots. With t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phaseolus Vulgaris
''Phaseolus vulgaris'', the common bean,, is a herbaceous annual plant grown worldwide for its edible dry seeds or green, unripe pods. Its leaf is also occasionally used as a vegetable and the straw as fodder. Its botanical classification, along with other ''Phaseolus'' species, is as a member of the legume family, Fabaceae. Like most members of this family, common beans acquire the nitrogen they require through an association with rhizobia, which are nitrogen-fixing bacteria. The common bean has a long history of cultivation. All wild members of the species have a climbing habit, but many cultivars are classified either as ''bush beans'' or ''climbing beans'', depending on their style of growth. The other major types of commercially grown beans are the runner bean ('' Phaseolus coccineus'') and the broad bean (''Vicia faba''). Beans are grown on every continent except Antarctica. In 2022, 28 million tonnes of dry common beans were produced worldwide, led by India with 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phaseolus Coccineus
''Phaseolus coccineus'', known as runner bean, scarlet runner bean, or multiflora bean, is a plant in the legume family, Fabaceae. Another common name is butter bean, which, however, can also refer to the lima bean, a different species. It is grown both as a food plant and an ornamental plant. Description This species originated in the mountains of Central America. It was most likely cultivated in the highlands of Mexico and Guatemala around 2000 BC. Most varieties have red flowers and multicolored seeds (though some have white flowers and white seeds) and are often grown as ornamental plants. The vine can grow to or more in length, its pods can get to , and its beans can be up to or more. It differs from the common bean (''P. vulgaris'') in several respects: the cotyledons stay in the ground during germination, and the plant is a perennial vine with tuberous roots (though it is frequently treated as an annual in colder climates). The knife-shaped pods are normally gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Greek
Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek Dark Ages, Dark Ages (), the Archaic Greece, Archaic or Homeric Greek, Homeric period (), and the Classical Greece, Classical period (). Ancient Greek was the language of Homer and of fifth-century Athens, fifth-century Athenian historians, playwrights, and Ancient Greek philosophy, philosophers. It has contributed many words to English vocabulary and has been a standard subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Homeric Greek, Epic and Classical periods of the language, which are the best-attested periods and considered most typical of Ancient Greek. From the Hellenistic period (), Ancient Greek was followed by Koine Greek, which is regar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
