Viability and Germination Inhibitor of the Seed of Rice

THE loss of viability of seeds within one year after harvesting has been reported by Grist 1 from varieties of rice grown in British Guiana and by Ramiah 2 in India, but no explanation has been offered. Germination tests of a winter variety ‘Rupsail’ recently carried out in this laboratory indicated...

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Bibliographic Details
Published in:Nature (London) 1960-08, Vol.187 (4737), p.620-621
Main Authors: SIRCAR, S. M, BISWAS, MANJULA
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:THE loss of viability of seeds within one year after harvesting has been reported by Grist 1 from varieties of rice grown in British Guiana and by Ramiah 2 in India, but no explanation has been offered. Germination tests of a winter variety ‘Rupsail’ recently carried out in this laboratory indicated peak germination during March–June following harvesting in December ; thereafter it declined and from November onwards the viability was lost. Seeds harvested in 1953 and 1957 failed to germinate in 1959. The excised embryos from fresh seeds of 1958 germinated only in White's nutrient agar media while those of one- or five-year old seeds did not grow. Respiration-rates measured by Warburg apparatus indicated higher rates in fresh seeds than the old ones (Table 1).
ISSN:0028-0836
1476-4687
DOI:10.1038/187620b0