Minocha, J.L. and Brar, D.S. (1976) Multiple Interchange Trisomic In Pearl Millet. The Indian Journal Of Genetics & Plant Breeding, 36 (2). pp. 153-155.
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Abstract
A trisomic Pennisetum typhoides plant (2n = 15) with multiple interchanges between the chromosomes was obtained in the F1 of a cross between the two interchange heterozygotes RT9 and RT14, each of which had an association of four chromosomes. In 25.2% of the PMCs from this trisomic four bivalents and a chain of seven chromosomes were observed, 38.6% of PMCs had one hexavalent, four bivalents and one univalent, and 21% of PMCs had a pentavalent. A ring type hexavalent was the most frequent type, being observed in 35.3% of PMCs with a hexavalent. Because of the high frequency of ring hexavalents, it is suggested that the extra chromosome is a normal one. The multiple interchange trisomic had a shorter stature, thinner stem and narrower leaves than normal diploid plants, similar characters to those of a normal trisomic.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Genetics, Punjab Agricultural University, Ludhiana, India. |
| Subjects: | Crop Improvement |
| Divisions: | Millet |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 06 Mar 2012 05:59 |
| Last Modified: | 06 Mar 2012 06:00 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/3491 |
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