|
Heterodera Sacchari
''Heterodera sacchari'', the sugarcane cyst nematode, mitotic parthenogenic sedentary endoparasitic nematode. This plant-parasitic nematode infects the roots of sugarcane, and the female nematode eventually becomes a thick-walled cyst filled with eggs. Aboveground symptoms are species specific and are similar to those caused by other '' Heterodera'' species. Symptoms include: stunted and chlorotic plants, and reduced root growth. Seedlings may be killed in heavily infested soils. History ''Heterodera sacchari'' was first identified in 1963 by Luc and Merny. Throughout the hot tropics and Western Africa, ''H. sacchari'' is referred as one of the most economically important cyst nematode species. Distribution This species is found in tropical climates and is considered a pest in African and some Asian countries. There have been reports in Jamaica. Morphology Eggs are 112-139 μm long and 43-45 μm wide. Second-stage juveniles (J2s) have an annulated cuticle 1.7 μm wide in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luc, M
Michel Luc (7 February 1927 – 18 January 2010) was a French zoologist (nematologist) and one of the founding fathers of the field of plant- nematology. He spent his career with ORSTOM (''Office de la Recherche Scientifique et Technique Outre-Mer''), now IRD ('' Institut de recherche pour le développement''). He created the first French nematology laboratory in the ORSTOM research station of Adiopodoumé, near Abidjan (Ivory Coast) in 1955, and a second nematology lab at Dakar Bel-Air (Senegal) in 1969. In 1978, he launched the ''Revue de Nématologie'' (soon renamed ''Fundamental and Applied Nematology'') that fused with ''Nematologica'' in 1999 to become '' Nematology'', currently the leading nematology journal in the field. He was a world-renowned authority on nematode taxonomy. Biography Michel Luc was born on 7 February 1927 in Tunis (Tunisia). From 1945, on, he studied biology in Paris at the Sorbonne, where he attended classes delivered by biologists such as Georges Mange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterodera Oryzicola
''Heterodera oryzicola'', the rice cyst nematode, is a plant pathogenic nematode, which is cited as an invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad .... References oryzicola Plant pathogenic nematodes Rice diseases Nematodes described in 1978 {{agri-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugarcane Diseases
This article is a list of diseases of sugarcane (''Saccharum'' spp. hybrids). Bacterial diseases Fungal diseases Miscellaneous diseases and disorders Nematodes, parasitic Viral diseases Protozoan diseases Phytoplasma diseases Phytoplasmas were previously known as 'mycoplasma-like organisms' (MLOs).Rao, G. P. and Ford, R. E. (2000) Vectors of virus and Phytoplasma diseases of Sugarcane: An Overview. In: Sugarcane Pathology, Vol. III. Virus and Phytoplasma diseases, G.P. Rao, R.E. Ford, M. Tosic and D.S. Teakle (Eds) Science Publishers, Hamshere, USA, Pg: 265-314. Unsure causal agent diseases * Ramu stunt disease The Ramu stunt disease is a disease of the sugarcane widespread throughout Papua New Guinea, but not detected in Australia. ''Eumetopina flavipes'', the island sugarcane planthopper, is a species of planthopper present throughout South East Asia ..., a disease widespread throughout Papua New Guinea, but not detected in Australia References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Pathogenic Nematodes
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ability ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saccharum Spontaneum
''Saccharum spontaneum'' (wild sugarcane, Kans grass) is a grass native to the Indian Subcontinent. It is a perennial grass, growing up to three meters in height, with spreading rhizomatous roots. In the Terai-Duar savanna and grasslands, a lowland ecoregion at the base of the Himalaya range in Nepal, India, Bangladesh and Bhutan, kans grass quickly colonises exposed silt plains created each year by the retreating monsoon floods, forming almost pure stands on the lowest portions of the floodplain. Kans grasslands are an important habitat for the Indian rhinoceros (''Rhinoceros unicornis''). In Nepal, kans grass is harvested to thatch roofs or fence vegetable gardens. Elsewhere, its ability to quickly colonize disturbed soil has allowed it to become an invasive species that takes over croplands and pasturelands, as has been documented in the Republic of Panama. Uses ''Saccharum spontaneum'' has a considerable number of regional names in the Indian Subcontinent, for instance '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urochloa Brizantha
''Urochloa brizantha'' (syn. ''Brachiaria brizantha'') is a species of grass known by the common name palisade grass. It is often used as a forage for livestock. Other common names include palisade signal grass, bread grass, Mauritius grass,Cook, B. G., et al''Brachiaria brizantha''.Tropical Forages. CSIRO, DPI&F (Queensland), CIAT and ILRI, Brisbane, Australia. 2005. Surinam grass, USFS. Pacific Island Ecosystems at Risk (PIER). large-seeded millet grass, big ashama,Quattrocchi, U. ''CRC World Dictionary of Grasses: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology, Volume 1.'' CRC Press. 2006. pg. 335. Ceylon sheep grass, St. Lucia grass (),Heuzé V., Tran G., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eleusine Indica
''Eleusine indica'', the Indian goosegrass, yard-grass, goosegrass, wiregrass, or crowfootgrass, is a species of grass in the family Poaceae. It is a small annual grass distributed throughout the warmer areas of the world to about 50 degrees latitude. It is an invasive species in some areas. ''Eleusine indica'' is closely related to ''Eleusine coracana'' (finger millet or African finger millet), and the diploid ''E. indica'' is likely an ancestor of the allotetraploid ''E. coracana''. Seeds of ''E. indica'' are edible and are sometimes used as a famine food, but yields are low. It is an important weed of cultivated crops, lawns, and golf courses. It thrives in disturbed areas with compacted soils in full sun. Both tillage and herbicides are used in its control. This low-growing grass is capable of setting seed even when closely mown. Some populations have evolved resistance to certain herbicides, including glyphosate Glyphosate (IUPAC name: ''N''-(phosphonomethyl) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paspalum Conjugatum
''Paspalum conjugatum'', commonly known as carabao grass or hilo grass, is a tropical to subtropical perennial grass. It is originally from the American tropics, but has been naturalized widely in tropical Southeast Asia and Pacific Islands. It has also spread to Northern Africa and Northern and Eastern Australia. It is also known as sour paspalum, T-grass (after the shape of their panicle), or more confusingly, as "buffalo grass" or "sour grass". Taxonomy ''Paspalum conjugatum'' belongs to the genus ''Paspalum'' (bahiagrasses or crown grasses) in the grass family Poaceae. It was first described in 1772 in by the Swedish botanist Peter Jonas Bergius. Distribution ''Paspalum conjugatum'' is native to the tropics of the Americas. It was introduced to tropical Southeast Asia and the Pacific Islands during the colonial period. It is particularly abundant in the Philippines from where the English common name "carabao grass" originates (named after the carabao, the local water buff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinochloa Colona
''Echinochloa colona'', commonly known as jungle rice, deccan grass, or awnless barnyard grass, is a type of wild grass originating from tropical Asia. It was formerly classified as a species of ''Panicum''. It is the wild ancestor of the cultivated cereal crop ''Echinochloa frumentacea'', sawa millet. Some taxonomists treat the two taxa as one species, in which case the domesticated forms may also be referred to as ''E. colona''. Distribution and habitat The grass occurs throughout tropical Asia and Africa in fields, and along roadsides and waterways. It is considered an invasive weed in the Americas and Australia. In Australia, it has spread to wetlands, and is threatening the habitat of swamp tea trees. In culinary use In India seeds of this grass are used to prepare a food dish called khichadi ''Khichdi'' or ''khichri'' (, , , , Odia: ଖେଚୁଡି) is a dish in South Asian cuisine made of rice and lentils ('' dal'') with numerous variations. Variations in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axonopus Compressus
''Axonopus compressus'' (syn. ''Axonopus compressus'' (Sw.) P.Beauv. var. ''australis'' G.A.Black, ''Milium compressum'' Sw., ''Paspalum compressum'' (Sw.) Nees, ''Paspalum platycaule'' Willd. ex Steud., ''Paspalum platycaulon'' Poir.) is a species of grass. It is often used as a permanent pasture, groundcover, and turf in moist, low fertility soils, particularly in shaded situations. It is generally too low-growing to be useful in cut-and-carry systems or for fodder conservation. While not optimal, it is occasionally used for football fields especially those which are not for elite competitions or where only a low level of maintenance can be done. Common names * English: broadleaf carpetgrass, carpet-grass, American carpet grass, tropical carpet grass, blanket grass, lawn grass, Louisiana grass, savanna grass, Kearsney grass, * Fijian: ''kambutu ni vavalangi'' * French: ''buffalo américain'' * Spanish: "Grama Brasilera (Arg.)", ''alfombra'', ''grama bahiana'', ''grama trenz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynodon Dactylon
''Cynodon dactylon'', commonly known as Bermuda grass, is a grass found worldwide. It is native to Europe, Africa, Australia and much of Asia. It has been introduced to the Americas. Although it is not native to Bermuda, it is an abundant invasive species there. In Bermuda it has been known as "crab grass" (also a name for ''Digitaria sanguinalis''). It is also known by various names as ''Dhoob'', ''dūrvā'' grass, ''ethana'' grass, ''dubo'', dog grass, dog's tooth grass, Bahama grass, crab grass, devil's grass, couch grass, Indian ''doab'', ''arugampul'', grama, wiregrass and scutch grass. Description The blades are a grey-green colour and are short, usually long with rough edges. The erect stems can grow tall. The stems are slightly flattened, often tinged purple in colour. The seed heads are produced in a cluster of two to six spikes together at the top of the stem, each spike long. It has a deep root system; in drought situations with penetrable soil, the root system c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryza Sativa
''Oryza sativa'', commonly known as Asian rice or indica rice, is the plant species most commonly referred to in English as ''rice''. It is the type of farmed rice whose cultivars are most common globally, and was first domesticated in the Yangtze River basin in China 13,500 to 8,200 years ago. ''Oryza sativa'' belongs to the genus '' Oryza'' of the grass family Poaceae. With a genome consisting of 430 Mbp across 12 chromosomes, it is renowned for being easy to genetically modify and is a model organism for the botany of cereals. Classification ''Oryza sativa'' contains two major subspecies: the sticky, short-grained ''japonica'' or ''sinica'' variety, and the nonsticky, long-grained ' rice variety. ''Japonica'' was domesticated in the Yangtze Valley 9–6,000 years ago, and its varieties can be cultivated in dry fields (it is cultivated mainly submerged in Japan), in temperate East Asia, upland areas of Southeast Asia, and high elevations in South Asia, while ''indica'' w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_from_the_Philippines.jpg "Click for more on -> Paspalum Conjugatum")
