Define landrace | Dictionary and Thesaurus

Time 2021-01-14 12:03:49

Web Name: Define landrace | Dictionary and Thesaurus

WebSite: http://landrace.askdefine.com

ID:166864

Keywords:

landrace,Define,Dictionary,

Description:

« DefinelandowskaDefinelands »Go to ExtensiveDefinitionExtensive DefinitionLandrace refers to domesticated animals orplants adapted to the natural and cultural environment in whichthey live (or originated) and, in some cases, work; they oftendevelop naturally with minimal assistance or guidance from humans(or from humans using traditional rather than modern breedingmethods), hence differ somewhat from what is commonly termed abreed, and usually possessmore diverse phenotypes and genotypes. They often form thebasis of more highly-bred formalised breeds. Sometimes a formalisedbreed retains the "landrace" name, despite no longer being a truelandrace.ExamplesAnimalsLandrace dogsFor example, landrace dogs are very different depending ontheir origins and purpose; BorderCollies derive from a landrace in Scotland andnorthern England, wheretheir primary characteristics had to do with how they herded sheepin the borderlands,and Salukiswere a landrace breed in the Middle Eastwhere they chased game acrossopen tracts of land. A landrace does not imply so much a breed as a type; for example,Border Collies traditionally have had a variation in appearance,from upright prick ears to nearly drop ears, different fullnessesof coat, and so on, although the general appearance was such thatthey could still be recognized as Border Collies and theirperformance around sheep most accurately represented theirmembership in that race.Often, when people move to create a highlyconsistent purebredbreed, focus is placed more on consistency of appearance ratherthan on consistency of behavior or adaptability to the environment,and much of what made the animals a landrace is lost. For example,show Border Collies might not be particularly good at herding sheepand might not have a coat that is appropriate for the Scottishborderlands; similarly, Salukis might not be able to chase andcatch hares in thedesert.Other animalsLandrace sheep were originally a breed ofsheep ideally suited for their environment. Several breeds ofswine use "landrace" inthe breed names.A few horsebreeds are claimed by aficionados to be "pure" and virtuallyunchanged from their original wild prototype or earliest landraces,though the term is rarely used in modern horsebreeding. However, both the Arabianhorse and the Andalusianhorse make claims of great antiquity for the ancestry of theirrespective breeds.PlantsSeveral definitions of the term landrace have beenused in botanical application. The term has recently been definedas "an autochthonous landrace isa variety with a high capacity to tolerate biotic and abioticstress, resulting in a high yield stability and an intermediateyield level under a low input agricultural system. " In simpleterms, landraces are grown from seed that has not beensystematically selected and marketed by seed companies or developedby plant breeders. A significant proportion of the world’s farmersgrow landraces. Data collected for a study of the spread of cerealagriculture into Europe showed that landraces have largely fallenout of use in Europe. European cereal landraces were grown by ourancestors before the work of the 19th century seed improvers andthe 20th century plant breeders produced improved varieties. Theterms ‘landrace’ and ‘traditional variety’ are sometimes usedinterchangeably.See alsoBreedDogtypePurebredSelectivebreedingReferencesExternal linksDon Bixby:Types of Breed, American Livestock Breeds Conservancy (ALBC) News,January-February 2003, and reprinted in Rare Breeds NewZ for May2003Whatis LandraceLivestockGuard Dogs: What is a Breed and Why Does It Matter?Description ofthe AFRICANIS land race dogDanish landrace swineDanishlandrace sheepRecreation of landrace maizeApproaches and constraints of using existing landrace material tounderstand agricultural spread in prehistorylandrace in Danish: Landracelandrace in German: Landrasselandrace in Dutch: Landras

TAGS:landrace Define Dictionary 

<<< Thank you for your visit >>>

Hot Websites