Radiosensitivity and Response to GA Treatment in the Sub-species of Oryza

J. V. GOUD and K. MURALEEDHARAN NAYAR

doi:https://doi.org/10.29321/MAJ.10.A03477

Madras Agricultural Journal

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Radiosensitivity and Response to GA Treatment in the Sub-species of Oryza

Author: J. V. GOUD and K. MURALEEDHARAN NAYAR,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 58, Issue: mar-mar,

DOI:https://doi.org/10.29321/MAJ.10.A03477

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Abstract

The response of a genotype to the external application of gibberellic acid (GA) is an index of the level of endogenous gibberellin content (Ecklund and Moore, 1968). Radio-sensitivity of a genotype depends upon the changes in endogenous levels of auxin and ascorbic acid (Sparrow and Christensen, 1953). To find out the differences in radio-sensitivity, if any, of the two sub-species of Oryza, and to correlate with their response to the external application of GA, an experiment was conducted in two varieties of paddy viz., Ss and Taichung-65 belonging to indica and 'ponlai' groups respectively.

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