Abstract
To investigate the effect of γ-ray irradiation on B chromosomes, dry seeds of a stock of Pennisetum typhoides carrying B chromosomes were exposed to γ-ray irradiation in doses of 10 kr., 20 kr. and 30 kr.; the γ-ray source was cobalt-60. The treated seeds were sown in pots and those that survived were transplanted into the field later. Meiosis in the pollen mother cells was examined to determine the types of aberration produced. For cytological investigation young spikelets were fixed in acetic alcohol (in proportions of 1 : 4) and anther squashes were made in acetocarmine.
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References
Krishnaswamy, N., and Rangaswamy Ayyangar, G. N., J. Ind. Bot. Soc., XX, 3, 111 (1941).
Caldecott, R. S., and Smith, L., Cytologia, 17, 24 (1952).
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PANTULU, J. Chromosomal Alterations in Pearl Millet induced by γ-Rays. Nature 213, 101–102 (1967). https://doi.org/10.1038/213101a0
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DOI: https://doi.org/10.1038/213101a0
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