| Description: | Apple Cmd Wallpaper |
| Category | APPLE MAC WALLPAPERS |
| Image Filesize | 137.4 KB |
| Date: | 26.12.2010 19:41 |
| Last view date | 22.05.2012 21:12 |
| Last view user | Guest |
| Hits: | 1905 |
| Downloads: | 62 |
| Rating: | 1.00 (1Vote(s)) |
| File size: | 137.4 KB |
| Added by: | admin |
|
Image Codes: Thumbnail for websites Thumbnail for forums Use the below codes to post the full sized image on other websites or forums Hotlink for websites Hotlink for forums Share this image with your friends Share this image Direct path to image |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
TERMS OF DOWNLOAD & USE:
These free desktop wallpapers are for personal use on computer screens only. redistributed, offered for free download.
They may not be for sale, included on CDs, or used for printed material.
All wallpapers are copyrighted to their respective owners. If you are the author of any of the desktop wallpapers found on this website
and you can prove this, please do not hesitate to let us know and we'll put your deserved credits
or remove it at your request. So don't claim copyrights!
Mail us: contact(at)pulsarmedia(dot)eu
The apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family (Rosaceae). It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans. Apples grow on small, deciduous trees. The tree originated in Western Asia, where its wild ancestor, Malus sieversii, is still found today. Apples have been grown for thousands of years in Asia and Europe, and were brought to North America by European colonists. Apples have been present in the mythology and religions of many cultures, including Norse, Greek and Christian traditions. In 2010, the fruit's genome was decoded, leading to new understandings of disease control and selective breeding in apple production.
There are more than 7,500 known cultivars of apples, resulting in a range of desired characteristics. Different cultivars are bred for various tastes and uses, including in cooking, fresh eating and cider production. Domestic apples are generally propagated by grafting, although wild apples grow readily from seed. Trees are prone to a number of fungal, bacterial and pest problems, which can be controlled by a number of organic and non-organic means.
At least 55 million tonnes of apples were grown worldwide in 2005, with a value of about $10 billion. China produced about 35% of this total. The United States is the second-leading producer, with more than 7.5% of world production. Iran is third, followed by Turkey, Russia, Italy and India. Apples are often eaten raw, but can also be found in many foods (especially desserts) and drinks. Many beneficial health effects have been found from eating apples; however, the seeds are slightly poisonous and two forms of allergies are seen to various proteins found in the fruit.
The apple forms a tree that is small and deciduous, reaching 3 to 12 metres (9.8 to 39 ft) tall, with a broad, often densely twiggy crown.[2] The leaves are alternately arranged simple ovals 5 to 12 cm long and 3"6 centimetres (1.2"2.4 in) broad on a 2 to 5 centimetres (0.79 to 2.0 in) petiole with an acute tip, serrated margin and a slightly downy underside. Blossoms are produced in spring simultaneously with the budding of the leaves. The flowers are white with a pink tinge that gradually fades, five petaled, and 2.5 to 3.5 centimetres (0.98 to 1.4 in) in diameter. The fruit matures in autumn, and is typically 5 to 9 centimetres (2.0 to 3.5 in) in diameter. The center of the fruit contains five carpels arranged in a five-point star, each carpel containing one to three seeds, called pips.[2]
The original wild ancestors of Malus domestica was Malus sieversii, found growing wild in the mountains of Central Asia in southern Kazakhstan, Kyrgyzstan, Tajikistan, and Xinjiang, China.[3] Cultivation of the species, most likely beginning on the forested flanks of the Tian Shan mountains, has progressed over a long period of time and permitted secondary introgression of genes from other species into the open-pollinated seeds, including such a large amount of gene exchange with Malus sylvestris, the crabapple, that current populations of apples are more related to those of crabapples than to the more morphologically similar progenitor Malus sieversii, though in pure strains without recent admixture the contribution of the latter predominates.[4][5][6]
In 2010, an Italian-led consortium announced they had decoded the complete genome of the apple in collaboration with horticultural genomicists at Washington State University[7], using the Golden delicious variety[8]. It had about 57,000 genes, the highest number of any plant genome studied to date[9] and more genes than the human genome (about 30,000).[10] This new understanding of the apple genome will help scientists in identifying genes and gene variants that contribute to resistance to disease and drought, and other desirable characteristics. Understanding the genes behind these characteristics will allow scientists to perform more knowledgeable selective breeding. Decoding the genome also provided proof that Malus sieversii was the wild ancestor of the domestic apple"an issue that had been long-debated in the scientific community.[11]
The center of diversity of the genus Malus is in eastern Turkey. The apple tree was perhaps the earliest tree to be cultivated,[12] and its fruits have been improved through selection over thousands of years. Alexander the Great is credited with finding dwarfed apples in Kazakhstan in Asia in 328 BCE;[2] those he brought back to Macedonia might have been the progenitors of dwarfing root stocks. Winter apples, picked in late autumn and stored just above freezing, have been an important food in Asia and Europe for millennia, as well as in Argentina and in the United States since the arrival of Europeans.[12] Apples were brought to North America with colonists in the 17th century,[2] and the first apple orchard on the North American continent was said to be near Boston in 1625. In the 20th century, irrigation projects in Washington state began and allowed the development of the multibillion dollar fruit industry, of which the apple is the leading species.[2]
Source: Wikipedia
Powered by 4images 1.7.6
Copyright © 2002-2012 Pulsarmedia 4images Template | Please send your feedback & suggestions to contact(at)pulsarmedia.eu