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Applecrab
Applecrabs are various hybrids between crabapples and apples. They are bred for varying reasons, including disease resistance and use in cold climates because they are often hardier than apple trees and their fruit has the good eating qualities of apples. Applecrabs are sometimes distinguished from apples if the fruit diameter is less than . Cold-hardy applecrabs Director of the Canadian Central Experimental Farm William Saunders (1836–1914) produced a number of such hybrids as part of an effort to develop good-quality eating apples for the Canadian prairies by crossing the domesticated apple cultivars with selected winter-hardy crabapple species. Cultivars include: * Malus 'Columbia', from one of Saunders' early experiments crossing ''M. baccata'' (from Siberia) with relatively hardy apples. * Malus 'Kerr', from crossing 'Dolgo' crabapple and 'Haralson' apple. * Malus 'Osman', from one of Saunders' early experiments crossing ''M. baccata'' with relatively hardy apples. * Mal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PRI Disease Resistant Apple Breeding Program
The PRI disease resistant apple breeding program is a joint project of the Purdue University, Rutgers University, and the University of Illinois, to breed apple cultivars to be resistant to apple scab. The initialism stands for the three involved universities: Purdue, Rutgers and Illinois. Formation During the early 20th century, C. S. Crandall carried out intensive studies of crosses between the cultivated apples and crab apples, with the goal of scab resistance. However, Crandall didn't see any fruits of his investigations. L. Fredric Hough, then a graduate student at the University of Illinois, studied Crandall's work. Hough published a paper in 1944, leading to a 1945 collaboration with Purdue University Pathology, pathologist J. Ralph Shay. Hough then relocated to Rutgers and the collaborative effort was extended there. The program The modified backcross breeding strategy used cultivated apple with recurrent parents from selected susceptible members of the wild ancestral genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topaz (apple)
Topaz is a cultivar of dessert apple that was developed in Czech Republic by the Institute of Experimental Botany for scab resistance. According to Orange Pippin it is "one of the best modern disease-resistant varieties, with fairly sharp flavour". See also *Applecrab Applecrabs are various hybrids between crabapples and apples. They are bred for varying reasons, including disease resistance and use in cold climates because they are often hardier than apple trees and their fruit has the good eating qualities of ... * Opal (apple) – descendant * Rajka (apple) References * https://web.archive.org/web/20111013210701/http://www.ovocnarska-unie.cz/web/web-sispo/odrudy/jabl/topaz.htm Czech apples Apple cultivars {{apple-fruit-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malus Baccata
''Malus baccata'' is an Asian species of apple known by the common names Siberian crab apple, Siberian crab, Manchurian crab apple and Chinese crab apple. It is native to much of northern Asia, but is also grown elsewhere as an ornamental tree and for rootstock. It is used for bonsai. It bears plentiful fragrant white flowers and edible red to yellow fruit of about diameter. Description The trees grow up to high. They have arching or overhanging red-brown branches and red-brown buds. Petioles are long, with few glands. Leaves are elliptic or egg-shaped, . Pedicels are slender and long. They bear white fragrant flowers of in diameter which groups by 4–6. Petals are white and egg-shaped, approximately long. Fruits are red to yellow and spherical, only about in diameter; they form dense clusters and resemble cherries from a distance. Flowering occurs in spring, with fruits appearing in September–October. Taxonomy The subordinate taxa include the followin varieties: *''M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malus Niedzwetskyana
''Malus niedzwetzkyana'', or Niedzwetzky's apple, is a kind of apple native to certain parts of China, Afghanistan, Kazakhstan, Kyrgyzstan, and Uzbekistan noted for its red-fleshed, red-skinned fruit and red flowers. Some botanists consider it a distinct species, while others have argued it is simply an unusual variety of the common apple, ''Malus pumila''. Niedzwetzky's apple is rare, often growing as an isolated tree, and is endangered throughout its range by agricultural encroachment and logging operations. Only 111 specimens of the tree are known to survive in Kyrgyzstan. The conservation group Fauna & Flora International is working to save and restore the species in that country, and has put ''M. niedzwetzkyana'' on its endangered list, brought it under its Global Trees Campaign, and planted over 1000 saplings in area forests in 2010 and 2011 The tree was introduced to the West c. 1890 by Georg Dieck at the Zöschen Arboretum, Germany, who grew it from seed sent by the Russ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malus Floribunda
''Malus floribunda'', common name Japanese flowering crabapple, Japanese crab, purple chokeberry, or showy crabapple, originates from Japan and East Asia. It may be a hybrid of ''M. toringo'' with ''M. baccata'', in which case it would be written as ''Malus'' × ''floribunda''. Description ''Malus floribunda'' forms a round-headed, deciduous tree up to in height, with narrow leaves on arching branches. The flowers, appearing in spring, are white or pale pink, opening from crimson buds. The red or yellow fruit is about 1 cm in diameter, ripening in autumn. Resistance Tree has good disease resistance to apple scab and powdery mildew. The initiators of the PRI disease resistant apple breeding program have discovered that ''Malus floribunda'' has resistance to the apple scab and founded the program to introduce this ''VF gene'' into cultivated apples. Their work had been progressing with great success. Awards This crabapple species is considered one of the best crabappl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Scab
Apple scab is a common disease of plants in the rose family (Rosaceae) that is caused by the ascomycete fungus ''Venturia inaequalis''. While this disease affects several plant genera, including ''Sorbus, Cotoneaster,'' and ''Pyrus'', it is most commonly associated with the infection of ''Malus'' trees, including species of flowering crabapple, as well as cultivated apple. The first symptoms of this disease are found in the foliage, blossoms, and developing fruits of affected trees, which develop dark, irregularly-shaped lesions upon infection. Although apple scab rarely kills its host, infection typically leads to fruit deformation and premature leaf and fruit drop, which enhance the susceptibility of the host plant to abiotic stress and secondary infection.Jha, G., Thakur, K., & Thakur, P. (2009). The ''Venturia'' Apple Pathosystem: Pathogenicity Mechanisms and Plant Defense Responses. ''Journal of Biomedicine and Biotechnology'', 2009. doi:10.1155/2009/680160 The reduction of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Etter
Albert Etter (1872–1950) was an American plant breeder best known for his work on strawberry and apple varieties. Early life and education Albert Felix Etter was born near Shingle Springs in El Dorado County, California, on November 27, 1872. He was one of ten surviving children of the Swiss-born Benjamin Etter (d. 1889), all but one of whom were boys. Around 1876 the family moved to Humboldt County, where Benjamin acquired a farm near Ferndale and became the first person to grow lentils in the county. Development of Ettersburg Albert's German-born mother, Wilhelmina (Kern) Etter (d. 1913) was skilled at cultivating plants, and Etter showed a talent for hybridizing plants in childhood, working with apples, peaches, dahlias, and strawberries by the time he was twelve. He attended public school and by the end of his teens was looking out for a site where he could continue his plant-breeding experiments. On a fishing trip to the Mattole River Valley, he found a section of land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surprise (apple)
'Surprise' is a pink-fleshed apple that is the ancestor of many of the present-day pink/red-fleshed apples bred by American growers. History 'Surprise' is a smallish, round apple with a dull pale green or whitish-yellow skin and very tart red-tinged flesh. It is believed to be a descendant of ''Malus niedzwetskyana'', a deeply red-fleshed apple native to Siberia and the Caucasus. Whereas other descendants of ''M. niedzwetskyana'' tend to have darkish-red flesh (such as a series of apples and crabapples developed by plant breeder Niels Ebbesen Hansen), Surprise and the cultivars based on it tend to have a brighter pinkish or light reddish flesh. The red pigmentation of the flesh comes mainly from a class of flavonoids called anthocyanins. Surprise began to circulate in Europe sometime before 1831, when it was reported growing in the London Horticultural Society Gardens. It was first brought to the United States by German immigrants to the Ohio Valley around 1840 and quickly intri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wealthy (apple)
The Wealthy is an American apple cultivar, and was the earliest to thrive in the Minnesota climate. Horticulturalist Peter Gideon first grew it in 1868, after years of trial and error with various apple varieties. History Before 1868, only crab apples grew reliably in Minnesota. Indigenous peoples in the area harvested other crops, but they did not grow apples. Early White settlers to Minnesota tried to grow apples using seeds and seedlings from their former homes to the east and the south, but their plants died, usually because of the region's harsh winters. In 1853, Peter Gideon moved to Minnesota for health reasons and took a homestead with his family on the shores of Lake Minnetonka, near Excelsior. He had learned fruit-growing as a child, and when he arrived on his new land, he planted a bushel of apple seeds he had brought with him from his former home in Illinois. In the years that followed, Gideon experimented with apple and fruit growing, planting thousands of trees, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple
An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus ''Malus''. The tree originated in Central 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 religious and mythological significance in many cultures, including Norse, Greek, and European Christian tradition. Apples grown from seed tend to be very different from those of their parents, and the resultant fruit frequently lacks desired characteristics. Generally, apple cultivars are propagated by clonal grafting onto rootstocks. Apple trees grown without rootstocks tend to be larger and much slower to fruit after planting. Rootstocks are used to control the speed of growth and the size of the resulting tree, allowing for easier harvesting. There are mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Apple
''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with pronouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of pronoun ''thee'') when followed by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backcrossing
Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding, and production of gene knockout organisms. Backcrossed hybrids are sometimes described with acronym "BC"; for example, an F1 hybrid crossed with one of its parents (or a genetically similar individual) can be termed a BC1 hybrid, and a further cross of the BC1 hybrid to the same parent (or a genetically similar individual) produces a BC2 hybrid. Plants Advantages * If the recurrent parent is an elite genotype, at the end of the backcrossing programme, an elite genotype is recovered. * As no "new" recombination results, the elite combination is not lost. Disadvantages * It works poorly for quantitative traits. * It is more restricted for recessive traits. * In practice, sections of genome from the nonrecurrent parents are often still presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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