Jauhar, P.P (1970) Haploid meiosis and its bearing on the phylogeny of pearl millet,Pennisetum typhoides stapf et hubb. Genetica , 41 (1). pp. 533-540.
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Abstract
Meiotic chromosome associations in a spontaneously originated haploid plant of pearl millet have been studied and their phyletic significance discussed. Chromosome pairing could be observed at pachytene and diplotene. Out of a total of 285 PMC''s studied at diakinesis-metaphase 1, 43 showed one bivalent and 7 had two bivalents per cell. Both rod- and ring-bivalents were observed. Apart from synapsis accompanied by chiasma formation, close associations of univalent chromosomes were observed. Out of 150 cells without true bivalents, 41 showed 1 s-s association and five, 2 s-s pairs per cell. On the basis of the realization of a maximum of two bivalents per cell, as also of a maximum of 2 s-s pairs, it has been inferred that the chromosome complement ofP. typhoides (n=7) has evolved from a basic set ofn=5 chromosomes. Other available evidence supporting this inference is also discussed.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Division of Genetics, Indian Agricultural Research Institute, New Delhi-12, India. |
| Subjects: | Crop Improvement |
| Divisions: | Millet |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 04 Mar 2012 09:33 |
| Last Modified: | 04 Mar 2012 09:33 |
| Official URL: | http://dx.doi.org/10.1007/BF00958932 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/3434 |
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