Bharathi, M. and Murty, U.R. and Kirti , P.B. and Rao, N.G.P. (1983) Chromosome pairing in the interspecific hybrids: Arachis hypogaea L. X Arachis chacoense nom. nud. Krap et Greg. and A. hypogaea L. X A. villosa Benth. Cytologia , 48 (3). pp. 527-538.
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Abstract
Chromosome pairing at meiotic pachytene was studied in the triploid hybrids between A. hypogaea (2n = 4x = 40, genomes AB) and the diploid (2n = 2x = 20) A-genome species A. chacoense and A. villosa. All 10 A. chacoense or A. villosa chromosomes paired regularly with chromosomes of A. hypogaea, though unpaired regions and heteromorphic bivalents were observed occasionally. It is concluded that (1) the 3 species are closely related, (2) A. hypogaea has 10 chromosomes in common with A. chacoense and A. villosa, although the 10 chromosomes of the 2 A-genome species are not necessarily homologous, and (3) there have been extensive structural changes during evolution in the A-genome and in both genomes of A. hypogaea, indicating that the classification of the genomes into A and B should be considered only tentative
| Item Type: | Article |
|---|---|
| Additional Information: | SNNigam Collections |
| Author Affiliation: | Indian Agric. Res. Inst., Reg. Sta., Rajendranagar, Hyderabad, India |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Groundnut |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 02 Sep 2013 06:04 |
| Last Modified: | 02 Sep 2013 06:04 |
| Official URL: | http://dx.doi.org/10.1508/cytologia.48.527 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/11605 |
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