Chromosomal behaviour in callus culture of Zea mays L.

Mohanty, B. D.; Paul, N. K.; Ghosh, Pritam

doi:10.1508/cytologia.51.37

Cited by 6 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The occurrence of polyploidy and structural alterations of chromosomes has been reported frequently in in vitro cultures. Cells in root explants of Zea mays cultured in Murashige and Skoog's medium exhibited chromosomal aberrations and mixoploidy (Mahanty et al 1986). It has been known for quite some time that media constituents can affect the formation of propagules (Constantin 1981, Dougall 1981, Cohen et al 1988.…”

Section: Seedsmentioning

confidence: 99%

Cytological Abnormalities Induced by Magnesium Sulphate in Callus Cultures of Vicia faba.

Abraham

Nair

1992

CYTOLOGIA

View full text Add to dashboard Cite

Section: Seedsmentioning

confidence: 99%

Cytological Abnormalities Induced by Magnesium Sulphate in Callus Cultures of Vicia faba.

Abraham

Nair

1992

CYTOLOGIA

View full text Add to dashboard Cite

“…Rao et al ( 1983), verificaram que o nível de ploidia de calos derivados de raízes foi de 96% de células diplóides, enquanto que para o calos derivados de endosperma foram 70% de células triplóides e para glumas predominaram células com 11-28 cromossomos. Já Mohanty et al ( 1986) verificaram alterações estruturais e numéricas entre as células de calos derivadas de raízes.…”

Section: Aberrações Numéricas E Estruturaisunclassified

Resposta embriogênica e estabilidade cromossômica em calos derivados de linhagens e híbridos de milho (>i<Zea mays>/i< L.)

Gardingo¹

View full text Add to dashboard Cite

Behaviour of chromosomes in anaphase cells in embryogenic callus cultures of maize (Zea mays L.)

Fluminhan

Kameya

1996

Theoret. Appl. Genetics

View full text Add to dashboard Cite

Mitotic anaphase cells of highly friable and embryogenic calluses which had been induced from immature embryos of two inbred lines of maize that have contrasting levels of heterochromatic knobs were analysed for the presence of abnormalities 3, 6, 9 and 12 months after the initiation of culture. A total of 500 typical anaphases was scored at each time point, and various aberrations, such as delay in the separation of sister chromatides, chromosome bridges (single, double and multiple) and chromosome fragments, were revealed to occur extensively in the cultures of both genotypes. Preparations after C-banding revealed that primary breakages often occurred inside knobs or at junction regions between the euchromatin and the heterochromatin of the knobs. Figures characterized by the delayed separation of sister chromatids, which originated preferentially at the knob level and was considered to be an initial event in the development of breakages, were observed at constant frequencies throughout the experiment. Increasing numbers of aberrant cells were detected with time, mainly due to the accumulation of cells with chromosome bridges and fragments. Several mitotic figures suggested the occurrence of breakagefusion-bridge cycles that were initiated by broken chromosomes. The overall frequencies of aberrant cells were similar for both genotypes, despite the differences in knob composition. However, callus cultures induced from the genotype having the higher level of knobs had more aberrant cells with abnormalities that involved several chromosomes, such as multiple bridges and multiple fragments.

show abstract

Chromosomal behaviour in callus culture of Zea mays L.

Cited by 6 publications

References 7 publications

Cytological Abnormalities Induced by Magnesium Sulphate in Callus Cultures of Vicia faba.

Cytological Abnormalities Induced by Magnesium Sulphate in Callus Cultures of Vicia faba.

Resposta embriogênica e estabilidade cromossômica em calos derivados de linhagens e híbridos de milho (>i<Zea mays>/i< L.)

Behaviour of chromosomes in anaphase cells in embryogenic callus cultures of maize (Zea mays L.)

Contact Info

Product

Resources

About