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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New variation induced at the diploid level, resulting in heterozygosity.

Biotechnology for solving agricultural problems: Materialy Res ikanskoi konferentsii, Alma Ata, noyabrya, Gametoclonal variation in pepper. Somaclonal variation in banana: New variation at the haploid level induced by the chromosome doubling, and iv.

Somaclonal and gametoclonal variation

These variants are obtained from both meiotic and mitotic divisions. Somaclonal variation in a somaclonal mutant HX-3 of rice. 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.


Field performance of bermudagrass germplasm expressing somaclonal variation selected for divergent responses to fall armyworm. Clone is defined as a population of a cell or organisms derived from a single cell or common ancestor by mitosis. The concept of somaclonal variation is built on this definition.

Gametoclonal variation in crop plants [1998]

Problemy teoreticheskoi i prikladnoi genetiki v Kazakhstane: New genetic variations induced by the cell culture procedures. Cellular and Molecular Biology Letters 7 4: Since plants derived from gametic cells are usually haploid but to retain the fertility chromosome number should be doubled.

Gametoclonal variation in crop plants. Direct expression of both dominant and recessive mutations in the regenerated plants is a distinct feature of gametoclonal variation.

NPTEL :: Biotechnology – Plant Biotechnology

Gametoclonal variation in crop improvement. Variation is gametoclonap either during plant development or in vitro cell cultures, in the mitotic process.

In vitro haploid production in higher plants 1, Chromosome number can be doubled by treating haploid plants with colchicines which is a frequently used mutagen to induce diploidization. Somaclonal and gametoclonal variation.

Gametoclonal variation The variation observed among gametocloanl regenerated from gametic cell cultures is termed as gametoclonal variation. In vitro selection of somaclonal and gametoclonal variants for salt tolerance in rice.


Gametoclonal variation in crop plants

Advances in agricultural biotechnology: Gametoclonal variation in the anther culture of wheat. The life cycle of higher plants comprises a sporophytic 2n and a gametophytic n generation.

Somaclonal and vatiation variation in wheat, cotton and Brassica. Both somaclonal and gametoclonal variations were detected in cultured cells and regenerated plants for morphological, biochemical characteristics, and chromosome number and structure.

There are four distinct sources of variations when referring to gametoclonal variation: Bermudagrass somaclonal variation for fall armyworm susceptibility.

Variations resulting from segregation and independent assortment. Somaclonal variation of cytoplasmic male sterile lines with wild rice cytoplasm: Jiangsu Journal of Agricultural Sciences 18 2: The effects of growth regulators on somaclonal variation in rye Secale cereale L. The concept of gametoclonal variation evolved from that of somaclonal variation.