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Nativar
A nativar is a horticulturally bred strain of a plant species, and distinguishes them from their natively bred counterparts. ''Nativar'' is a portmanteau of the words 'native' and 'cultivar'; such plants may have different genetic traits from those formerly prevalent in the wild. The difference between a 'nativar' and a 'cultivar' is if the species is grown within its native historic range. Often the goal of using nativars within their historic species range is to reintroduce their ecological benefit into the local ecology. The ecological consequences and benefits of nativars is a widely discussed concept within gardening and horticultural communities, as the capacity of nativar plants to fit the ecological niche of their native counterpart may be manipulated during the breeding process. Nativars are developed for a variety of reasons, including disease resistance, pest resistance, drought tolerance. Within the horticulture industry, nativars are often developed mostly for aesthet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castanea Dentata
The American chestnut (''Castanea dentata'') is a large, fast-growing deciduous tree of the beech family native to eastern North America. As is true of all species in genus Castanea, the American chestnut produces burred fruit with edible nuts. The American chestnut was one of the most important forest trees throughout its range and was considered the finest chestnut tree in the world.Davis, Donald E"Historical Significance of American Chestnut on Appalachian Culture and Ecology" ''www.ecosystem.psu.edu'', 2005. Retrieved October 28, 2015. During the early to mid 20th century, American chestnut trees were devastated by chestnut blight, a fungal disease that came from Chinese chestnut trees that were introduced into North America from East Asia. It is estimated that the blight killed between 3 and 4 billion American chestnut trees in the first half of the 20th century, beginning in 1904.Griffin, Gary"Recent advances in research and management of chestnut blight on American chest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
