Results 141 to 150 of about 1,796 (180)
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Somaclonal Variation in Haworthia
1990Plants of the genus Haworthia belonging to the tribe Aloineae of the Liliaceae are distributed in Southeast Africa and Madagascar; they have bimodal chromosomes, namely large (L) and small (S) chromosomes (2n = 14; 8L + 6S, Sato 1942). The large chromosomes (L1 to L4) can be identified by their respective homologs, whereas the identification of the ...
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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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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 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 and gametoclonal variation
1986For several years it has been recognized that introduction of plant cells into culture results in genetic changes. These genetic alterations have been recovered in the plants regenerated from cell cultures. More recently it has been recognized that this method of introducing genetic changes into crop plants could be used to develop new breeding lines ...
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1986
Phenotypic variation was observed in plants regenerated from cultured immature embryos and inflorescences of hexaploid wheat (Triticum aestivum; 2n=6x=42), and experiments were carried out to examine the nature, frequency and stability of this variation. In a cytological study of regenerated plants, 30% were found to be aneuploid and structural changes
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Phenotypic variation was observed in plants regenerated from cultured immature embryos and inflorescences of hexaploid wheat (Triticum aestivum; 2n=6x=42), and experiments were carried out to examine the nature, frequency and stability of this variation. In a cytological study of regenerated plants, 30% were found to be aneuploid and structural changes
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