Lavia, G.I. (1998) Karyotypes of Arachis palustris and A. praecox (section Arachis), two species with basic chromosome number x = 9. Cytologia, 63 (2). pp. 177-181.
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Abstract
A. palustris and A. praecox, wild annual relatives of the cultivated groundnut, belong to the section Arachis. These species have qualities which deserve being incorporated into the cultivated peanut. Karyotypes for both species were shown to be 2n = 2x = 18 = 16m + 2sm. The chromosome number of A. praecox is reported for the first time. Both species can be distinguished by a combination of parameters: karyotype formula, chromosome length, type and position of SAT chromosome, size of satellite and asymmetry indices. Knowledge about the chromosome number and karyotypes of both species is of great value for the improvement of cultivated peanut. The basic number x = 9 may have derived from ancestral x = 10, probably by aneuploidy. This idea supports the hypothesis that section Arachis presents the most advanced traits within the genus
| Item Type: | Article |
|---|---|
| Additional Information: | SNNigam collections |
| Author Affiliation: | Instituto de Botánica del Nordeste, C. C. 209, (3400) Corrientes, Argentina |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Groundnut |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 01 Sep 2013 14:01 |
| Last Modified: | 01 Sep 2013 14:01 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/11590 |
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