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Iris Bicapitata
''Iris bicapitata'' is a plant species in the genus ''Iris'', it is also in the subgenus ''Iris''. It is a rhizomatous perennial, from the Gargano Peninsula, Italy. It has sickle or pointed leaves, shorter than the flowering stem. It has two flowers, which come in variable shades from yellow, white, lilac, blue and violet. They can also be bi-coloured. It is thought to have been derived from ''Iris pseudopumila''. It is cultivated as an ornamental plant in temperate regions. Description ''Iris bicapitata'' is similar in form to ''Iris germanica'' but a slightly smaller. It has a thick horizontal, fleshy rhizome. That is similar in form to other bearded irises. It has linear, falcate (sickle shaped), or acuminate (pointed) leaves. They can grow up to between long, (they are shorter than the flowering stem,) and around 2.5 cm wide. The tip of the leaves is membranous. It has a slender stem or peduncle, that can grow up to between tall. But can reach up to in cultivation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trin
Trin is a municipalities of Switzerland, municipality in the Imboden Region in the Switzerland, Swiss Cantons of Switzerland, canton of Graubünden. Crestasee is located in Trin. History Trin is first mentioned in the 12th Century as ''Turunnio''. Geography Trin is perched on the mountain-side above the Rhine valley on the road between Domat/Ems and Flims. The village of Mulin (also in the municipality) is at the foot of the slope on the edge of the valley. Trin has an area, , of . Of this area, 33.2% is used for agricultural purposes, while 24.3% is forested. Of the rest of the land, 1.7% is settled (buildings or roads) and the remainder (40.8%) is non-productive (rivers, glaciers or mountains). Before 2017, the municipality was located in the Trins sub-district of the Imboden district, after 2017 it was part of the Imboden Region. It consists of the villages of Trin, Digg and Mulin. Until 1943 Trin was known as Trins. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sepals
A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined by Noël Martin Joseph de Necker in 1790, and derived . Collectively the sepals are called the calyx (plural calyces), the outermost whorl of parts that form a flower. The word ''calyx'' was adopted from the Latin ,Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 not to be confused with 'cup, goblet'. ''Calyx'' is derived from Greek 'bud, calyx, husk, wrapping' ( Sanskrit 'bud'), while is derived from Greek 'cup, goblet', and the words have been used interchangeably in botanical Latin. After flowering, most plants have no more use for the calyx which withers or becomes vestigial. Some plants retain a thorny calyx, either dried or live, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regions Of Italy
The regions of Italy ( it, regioni d'Italia) are the first-level administrative divisions of the Italian Republic, constituting its second NUTS administrative level. There are twenty regions, five of which have higher autonomy than the rest. Under the Italian Constitution, each region is an autonomous entity with defined powers. With the exception of the Aosta Valley (since 1945) and Friuli-Venezia Giulia (since 2018), each region is divided into a number of provinces (''province''). History During the Kingdom of Italy, regions were mere statistical districts of the central state. Under the Republic, they were granted a measure of political autonomy by the 1948 Italian Constitution. The original draft list comprised the Salento region (which was eventually included in Apulia); ''Friuli'' and ''Venezia Giulia'' were separate regions, and Basilicata was named ''Lucania''. Abruzzo and Molise were identified as separate regions in the first draft, but were later merged into ''Abru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanical Name
A botanical name is a formal scientific name conforming to the '' International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultigen, the additional cultivar or Group epithets must conform to the ''International Code of Nomenclature for Cultivated Plants'' (ICNCP). The code of nomenclature covers "all organisms traditionally treated as algae, fungi, or plants, whether fossil or non-fossil, including blue-green algae ( Cyanobacteria), chytrids, oomycetes, slime moulds and photosynthetic protists with their taxonomically related non-photosynthetic groups (but excluding Microsporidia)." The purpose of a formal name is to have a single name that is accepted and used worldwide for a particular plant or plant group. For example, the botanical name ''Bellis perennis'' denotes a plant species which is native to most of the countries of Europe and the Middle East, where it has accumulated various names in many languages. Later, the plant was intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraploid
Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. 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 produces spores by meio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosomes
A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones. These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation. Chromosomes are normally visible under a light microscope only during the metaphase of cell division (where all chromosomes are aligned in the center of the cell in their condensed form). Before this happens, each chromosome is duplicated (S phase), and both copies are joined by a centromere, resulting either in an X-shaped structure (pictured above), if the centromere is located equatorially, or a two-arm structure, if the centromere is located distally. The joined copies are now called sis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iris Albicans
''Iris albicans'', also known as the cemetery iris, white cemetery iris, or the white flag iris, is a species of iris which was planted on graves in Muslim regions and grows in many countries throughout the Middle East and northern Africa. It was later introduced to Spain, and then other European countries. It is a natural hybrid. It grows to 30–60 cm tall. The leaves are grey-green, and broadly sword-shaped. The inflorescence is fan-shaped and contains two or three fragrant flowers. The flowers are grey or silvery in bud, and are white or off-white and 8 cm wide in bloom. It is a sterile hybrid, and spreads by rhizomal growth and division, as it cannot produce seeds. ''Iris albicans'' has been cultivated since ancient times and may be the oldest iris in cultivation. Collected by Lange in 1860, it has been in cultivation since at least 1400 BC. Originating from Yemen and Saudi Arabia, it appears in a wall painting of the Botanical Garden of Tuthmosis III in the Tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthone
Xanthone is an organic compound with the molecular formula O[C6H4]2CO. It is a white solid. In 1939, xanthone was introduced as an insecticide and it currently finds uses as Insecticide, ovicide for codling moth eggs and as a larvicide. Xanthone is also used in the preparation of xanthydrol, which is used in the determination of urea levels in the blood. It can also be used as a photocatalyst. Synthesis Xanthone can be prepared by the heating of phenyl salicylate: Six methods have been reported for synthesizing xanthone derivatives: *The Michael-Kostanecki method uses an equimolar mix of a polyphenol and an ''O''-hydroxybenzoic acid, which are heated with a dehydration reaction, dehydrating agent. *The Friedel–Crafts reaction, Friedel-Crafts method has a benzophenone intermediate. *The Robinson-Nishikawa method is a variant of the Hoesch reaction, Hoesch synthesis but with low yields. *The Asahina-Tanase method synthesizes some methoxylated xanthones, and xanthones with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopolyploid
Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. 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 produces spores by meiosi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diploid
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more chromosome sets. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an organism's life cycle. Half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Root Hair
Root hair, or absorbent hairs, are outgrowths of epidermal cells, specialized cells at the tip of a plant root. They are lateral extensions of a single cell and are only rarely branched. They are found in the region of maturation, of the root. Root hair cells improve plant water absorption by increasing root surface area to volume ratio which allows the root hair cell to take in more water. The large vacuole inside root hair cells makes this intake much more efficient. Root hairs are also important for nutrient uptake as they are main interface between plants and mycorrhizal fungi. Function The function all root hairs is to collect water and mineral nutrients in the soil to be sent throughout the plant. In roots, most water absorption happens through the root hairs. The length of root hairs allows them to penetrate between soil particles and prevents harmful bacterial organisms from entering the plant through the xylem vessels. Increasing the surface area of these hairs makes plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigma (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals ( biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and sle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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