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Somaclonal Variation in Potato
1990Potato (Solanum tuberosum) has been under cultivation by man for some 8000 years. At present, it ranks fifth amongst the most important food crops in the world. Its origin lies probably in the Andes, where wild potatoes are still widespread, although no species has yet been identified as the diploid ancestor. Most present cultivars are tetraploid (2n =
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Somaclonal Variation in Rauwolfia
1996Rauwolfia (Apocynaceae family) species are distributed in tropical regions of Africa, Central and South America, Australia, and Southeast Asia. Altogether, the genus covers 140 species, most of which are shrubs, less frequently trees up to 18–21 m in height (R. macrophylla Stapf and R. caffra Sond), or intermediate forms up to 6 m high (R.
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1990
Rice is the staple food of more than half of the world’s population, and its present cultivation spans from latitude 53° N to 40° S (Lu and Chang 1980), from -23 to +7000 feet above sea level. It is cultivated under various conditions, including upland, deep water, and soils with pH 3.5 to 9.5 (Khush 1984). There are 22 species in the genus Oryza, most
Z.-X. Sun, K.-L. Zheng
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Rice is the staple food of more than half of the world’s population, and its present cultivation spans from latitude 53° N to 40° S (Lu and Chang 1980), from -23 to +7000 feet above sea level. It is cultivated under various conditions, including upland, deep water, and soils with pH 3.5 to 9.5 (Khush 1984). There are 22 species in the genus Oryza, most
Z.-X. Sun, K.-L. Zheng
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Somaclonal Variation in Cotton
1998The extent of genetic variability in the base population determines the success of any crop improvement program. During the past few years, various in vitro methods have been employed to induce genetic variability/somaclonal variation for resistance to pests, diseases, salt, high temperature, etc. in a number of agricultural crops (see Bajaj 1996). The
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Somaclonal Variation in Fuchsia
1990In the wild, the genus Fuchsia (Onagraceae) comprises about 100 species, living mainly in the mountains of South and Central America, with a small section in the Pacific. Some species were introduced into Europe at the end of the 18th century as garden plants.
J. Bouharmont, P. Dabin
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Somaclonal Variation in Chicory
1990Chicory (Cichorium intybus L., n = 9) is a species of the Compositae family that is concentrated in the warm temperate zone of the northern hemisphere, particularly in Europe and around the Mediterranean Basin. According to Vavilov (1951), the Mediterranean is the primary center of distribution of this plant.
GRAZIA S. +2 more
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Somaclonal Variation in Cereals
1990Somaclonal variation has been extensively documented (Larkin and Scowcroft 1981; Larkin et al. 1985, Sala and Biasini 1985; Tonelli 1985; Brown and Lorz 1986; Ahloowalia 1986). This variation seems not to be species- or organ-specific, but ubiquitous among regenerated plants, and appears to cover a wide spectrum of morphological, physiological, and ...
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Somaclonal Variation in Strawberry
1990The genus Fragaria can be divided into about a dozen species which can be grouped into four classes with respect to their ploidy level, taking seven chromosomes as the basic number (Staudt 1953 ; Darrow 1966; Fadeeva 1975). The first group comprises diploid species (2n = 2x = 14), among which F. vesca L.
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1990
For several thousand years, conventional breeding techniques have been used to genetically improve peaches. Now we have tissue culture and genetic engineering technologies at our disposal that will enable us not only to work at the whole plant level, but also at the organ, tissue, cell, protoplast, organelle, chromosome, and gene levels in our efforts ...
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For several thousand years, conventional breeding techniques have been used to genetically improve peaches. Now we have tissue culture and genetic engineering technologies at our disposal that will enable us not only to work at the whole plant level, but also at the organ, tissue, cell, protoplast, organelle, chromosome, and gene levels in our efforts ...
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Somaclonal Variation in Pelargonium
1990The genus Pelargonium, l’Her. Storksbill (Geraniaceae) comprises plants of various habit, often succulent: the leaves, either digitately or pinnately veined, are entire, lobed, or dissected; the flowers, of many colors, usually have five sepals and petals, the two upper petals mostly larger, the lower mostly narrow and occasionally very small; there ...
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