Introduction. Plants generally exhibit cytogenetic and genetic variations which help the plant breeders in crop improvement. When such variants arise through. Request PDF on ResearchGate | Gametoclonal Variation in Crop Plants | Gametoclonal variation has been defined as the variation among. breeding strategies for the use of this variation are presented and discussed. Somaclonal and gametoclonal variation are new tools for the geneticist and plant .

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These variants are obtained from both meiotic and mitotic divisions.

Gametoclonal variation in crop plants [1998]

Somaclonal variation and induced mutations in crop improvement Field performance of bermudagrass germplasm expressing somaclonal variation selected for divergent responses to fall armyworm. Gametoclonal variation in crop improvement.

Somaclonal and gametoclonal variation in wheat, cotton and Brassica. In vitro selection of somaclonal and gametoclonal variants for salt tolerance in rice.

Jiangsu Journal of Agricultural Gamtoclonal 18 2: Gametoclonal variation in the anther culture of wheat. Journal of Tropical and Subtropical Botany 10 2: The concept of gametoclonal variation evolved from that of somaclonal variation. Biotechnology for solving agricultural problems: Gametoclonal variation in pepper. Bermudagrass somaclonal variation for fall armyworm susceptibility. Advances in agricultural biotechnology: The variation observed among plants regenerated from gametic cell cultures is termed as gametoclonal variation.

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PDF of Somaclonal and gametoclonal variation

There are four distinct sources of variations when referring to gametoclonal variation: New genetic variations induced by the cell culture procedures. Cellular and Molecular Biology Letters 7 4: The concept of somaclonal variation is built on this definition. New variation at the haploid level induced by the chromosome doubling, and iv. Somaclonal and gametoclonal variation. Variations resulting from segregation and independent assortment.

Somaclonal variation in banana: Somaclonal variation of cytoplasmic male ganetoclonal lines with wild rice cytoplasm: Direct expression of both dominant and recessive mutations in the regenerated plants is a distinct feature of gametoclonal variation.

The effects of growth regulators on somaclonal variation in rye Secale cereale L.

Both somaclonal and gametoclonal variations gametcolonal detected in cultured cells and regenerated plants for morphological, biochemical characteristics, and chromosome number and structure.

Variation is induced either during plant development or in vitro cell cultures, in the mitotic process. Unlike somatic cells, which in theory should be homogeneous within any single plant, the gametes are products of meiosis, governed by Mendel’s laws of segregation and independent assortment.


Materialy Res ikanskoi konferentsii, Alma Ata, noyabrya, Gametoclonal variation in crop plants. Since plants derived from gametic cells are usually haploid but to retain the fertility chromosome number should be doubled.

NPTEL :: Biotechnology – Plant Biotechnology

The life cycle of higher plants comprises a sporophytic 2n and a gametophytic n generation. Chromosome number can be doubled by variattion haploid plants with colchicines which is a frequently used mutagen to induce diploidization. Problemy teoreticheskoi i prikladnoi genetiki v Kazakhstane: Somaclonal variation in a somaclonal mutant HX-3 of rice.

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