Busey, P. (1971) Sorghum Pachytene Karyotypes. Annals of the Missouri Botanical Garden, 58 (2). pp. 245-257.
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Abstract
Sorghum [S. bicolor (L.) Moench] pachytene chromosomes show considerable detail in morphology. Previous reports have characterized karyotypes. In the present study, karyological observations covered a wide range of sorghum germplasm. Most collections were found unsatisfactory for karyotype analysis. Of those which were satisfactory, exhaustive simultaneous comparisons of chromosome lengths, arm ratios, and other morphology could not establish any complete karyotypes. Of the ten chromosome pairs, however, one nucleolar pair and one asymmetric pair were easily identified. A group of three longer pairs could be distinguished from five shorter pairs. Beyond this, it did not seem that complete karyotypes could ever be obtained, in view of the large length variation computed for the two identifiable chromosomes. This variation could not be entirely assigned to hypotheses of chromosome shortening or to any feature of the technique, though each step of the technique was analyzed for its reliability. The nonconformity of the present results from those of previous reports challenges the repeatability of the previous experiments. This, in line with statements by some sorghum workers, suggests that the basic karyology of sorghum is not well understood.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Missouri Botanical Garden |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 26 May 2012 13:22 |
| Last Modified: | 26 May 2012 13:22 |
| Official URL: | http://www.jstor.org/stable/2394934 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5785 |
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