Results 121 to 130 of about 1,796 (180)

Somaclonal Variation

2017
Somaclonal variation is defined as genetic or epigenetic changes that arise in vitro between clonal regenerants and their corresponding donor plants. The genetic changes are cytogenetic abnormalities and alterations to specific sequences of DNA; epigenetic changes are alterations of gene expression without changes to DNA sequences. Somaclonal variation,
Leva A, Rinaldi LMR
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Heritable somaclonal variation in wheat

Theoretical and Applied Genetics, 1984
Efficient tissue culture and regeneration methods were established using immature wheat embryos as expiants. Genotype differences in culturability were evident, and from the ten accessions most amenable to culture, a total of 2,846 plants were regenerated.
P J, Larkin, S A, Ryan, R I, Brettell, W R, Scowcroft   +3 more
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Applications of Somaclonal Variation

Nature Biotechnology, 1986
While recombinant DNA techniques offer promise for modification of crops, the relative paucity of knowledge of plant genetics and biochemistry has delayed development of recombinant DNA–based products using higher plants. However, somaclonal variation offers an opportunity to uncover the natural variability in plants and to use this genetic variability
David A. Evans, William R. Sharp
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Somaclonal Variation in Nicotiana sylvestris

1990
Nicotiana sylvestris is a diploid species (2n = 24) from the Solanaceae family, native of the Andean foothills of northwestern Argentina, where it grows from 500 to 1600 m, generally in moist woods, but also on red silt and sandy banks. In 1899, Spegazzini and Comes described it as “a robust plant of the aspect of cultivated tobacco” (cited by ...
Prat, D., de Paepe, R., Li, X.Q.
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Somaclonal Variation in Date Palm

2011
The exploration of somaclonal variation is an approach that could provide date palm breeding programs with new genotypes. Naturally occurring or induced variants may have superior agronomic quality and/or enhanced performance but could also harbor new traits such as tolerance to drought and salinity or resistance to major diseases i.e. bayoud.
A. El Hadrami, F. Daayf, S. Elshibli, S. M. Jain, I. El Hadrami   +4 more
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SOMACLONAL AND GAMETOCLONAL VARIATION

American Journal of Botany, 1984
For 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 ...
D. A. Evans, W. R. Sharp, H. P. Medina‐Filho   +2 more
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Stress and Somaclonal Variation

2010
Plant species have developed in the course of evolution through a series of mechanisms which optimize their relationships with the environments in which they live. As plants are sessile organisms, they cannot avoid extreme stress situations which can be deleterious. Although the word stress is well known, it has proven to be a very elusive concept, and
A. M. Vázquez, R. Linacero
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Somaclonal Variation in Sugarbeet

1990
The sugarbeet (Beta vulgaris L.) is an important world food crop in temperate and subtropical climates. On the international trade market its principle product, sugar, is an extremely important commodity, and it is also a significant industrial crop in some countries.
J. W. Saunders, W. P. Doley, J. C. Theurer, M. H. Yu   +3 more
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Somaclonal Variation in Cucurbits

1990
Cucurbits were among the first plants used by man, and the bottle gourd may be the only plant known in both the New and Old Worlds in early prehistoric times. Species of Cucurbita were major crops in the agriculture of the Aztec, Inca, and Mayan civilizations in Central and South America.
V. Moreno, L. A. Roig
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Somaclonal Variation in Sorghum

1996
Sorghum, Sorghum bicolor (L.) Moench (2n = 20), is the world’s fifth most important cereal crop. It is known under a variety of names and has been variously classified. Harlan and de Wet (1972) simply classified cultivated sorghum into five basic races (bicolor, guinea, caudatum, kafir, and durra) and ten intermediate races from combinations between ...
T. Cai, L. G. Butler
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