Sree Ramulu, K. (1970) Induced asynapsis in Sorghum. Madras Agricultural Journal, 57. pp. 29-30.
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Abstract
Several dwarf mutants were isolated in the M2 generation of S. subglabrescens (2n = 20) 'Co18' treated with a wide range of physical and chemical mutagens. Among the dwarf mutants, one isolated from X-ray treatment was both male and female sterile. Cytological examination of the pollen mother cells of this mutant at pachytene revealed no pairing among the homologous chromosomes. At early diacinesis, 20 univalents were observed, compared with ten bivalents in the control plants. A variable number of laggards was observed at the equator in anaphase I. Division of univalents was also observed. The resulting daughter cells were often of unequal sizes. Micronuclei were found in the tetrads. All the pollen grains were empty, shrunken and shrivelled. No seed was set, even after dusting with pollen from control plants
| Item Type: | Article |
|---|---|
| Author Affiliation: | Agricultural College & Research Institute, Coimbatore, India |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 29 May 2012 12:48 |
| Last Modified: | 29 May 2012 12:48 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5909 |
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