Plant domestication definition
maize.teacherfriendlyguide.org/index.php/what-is-maize/what-is-domestication#:~:text=Domestication is the process by which plants and,that are more advantageous or desirable for humans.
- Domestication is the process by which plants and animals are genetically modified over time by humans for traits that are more advantageous or desirable for humans.
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Jan 21, 2011 · Domesticated plants and animals must be raised and cared for by humans. Domesticated species are not wild. Plant Domestication People first domesticated plants about 10,000 years ago, between the Tigris and Euphrates rivers in Mesopotamia (which includes the modern countries of Iran, Iraq, Turkey, and Syria). People collected and planted the ...
Oct 23, 2020 · Domestication, the process of hereditary reorganization of wild animals and plants into domestic and cultivated forms according to the interests of people. Domesticated animals and plants are created by human labor to meet specific requirements or whims and are adapted to conditions of continuous care.
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Domestication is the process of adapting plants and animals to meet human needs. Different regions of the world have worked to domesticate species of plants and animals over many generations.
Nov 13, 2019 · The traditional definition of a domesticated plant is one that has been changed from its natural state until it is no longer able to grow and reproduce without human intervention. The purpose of plant domestication is to adapt plants to make them optimal for human use/consumption.
Our human ancestors began this process by selecting teosinte (the ancestor of maize) that had bigger kernels, and more rows of kernels. Over time they probably also selected for other useful traits, such as kernels that didnt shatter (fall off from the plant), exposed kernels (lacking the outer protective part of the kernel) and higher-yield. Eventually, a new type was formed - what we know now as maize, or corn (see also Domestication genes).
Because the traits selected for are advantageous to humans but not necessarily advantageous for the plants, these newly developed plants have often lost the ability to survive in the wild without humans. For example, the large kernels of contemporary maize ears are not easily dispersed by wind or birds. If left alone in the wild, they would simply fall to the ground, where they would sprout in a heap, too close together to be able to grow into big healthy plants. And while some plants seeds are dispersed through ingestion by animals (and then expelled with feces), maize kernels are more thoroughly digested such that they are no longer viable when expelled (they have lost the hard seed coat that their ancestor had); thus, they cannot be dispersed in this way.
Some of the traits that have been selected for by humans but which are not healthy for a plant in the wild include:
Since only certain plants are being selected and propagated, domestication tends to decrease the genetic diversity of the cultivated varieties of crops (see Figure below). Because consumers prefer uniformity in the marketplace, they select for low genetic diversity. But low genetic diversity can be detrimental (see later section). Diversity usually remains in the wild relatives of the crop species, however, and can be reintroduced by intentional plant breeding. Domestication is the same process used to breed new types of dogs, cats, livestock, etc.
Definition: Seed dormancy is a condition that prevents seeds from germinating under certain conditions. There are many mechanisms involved and varying conditions necessary to break dormancy. In the wild, dormancy helps ensure the survival of the species by spreading germination out over time (not all the seeds germinate at once), thus at least some seeds are likely to encounter a favorable environment and survive. In domesticated plants this trait has often been bred out because it is more advantageous for a farmer to have all seeds germinate at once, making the crop more manageable.
Other important domesticated plants include pulses, olives, cotton, flax, and fruits. Domesticated plants and animals provide humans with a variety of useful products, including food and fibers, and serve important functions, such as animal traction [that is, the use of animals to pull carts and plows ( Fig. 1 )] and transport.
Domesticate definition, to convert (animals, plants, etc.) to domestic uses; tame. See more.
May 22, 2020 · Domestication syndrome is a term that describes the permanent changes that appear in plants and animals as a result of domestication. Some of the behavioral changes fueled by the domestication syndrome include tameness and increased docility. Darwin is credited for the discovery of the domestication syndrome.