<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> Plant breeding is the art and science of changing the traits of plants in order to produce desired characteristics . It has been used to improve the quality of nutrition in products for humans and animals. . Plant breeding can be accomplished through many different techniques ranging from simply selecting plants with desirable characteristics for propagation, to methods that make use of knowledge of genetics and chromosomes, to more complex molecular techniques (see cultigen and cultivar). Genes in a plant are what determine what type of qualitative or quantitative traits it will have. The main purpose plant breeders is have is so they can create a specific outcome of plants and potentially new plant varieties . </P> <P> Plant breeding has been practiced for thousands of years, since near the beginning of human civilization . It is practiced worldwide by individuals such as gardeners and farmers, or by professional plant breeders employed by organizations such as government institutions, universities, crop - specific industry associations or research centers . </P>

Who are plant breeders what do they do and why
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