Chandrasekharan, P. and Ramaswamy, K.R. (1973) Cytogenetical studies of interspecific derivatives involving Sorghum durra (2n = 20) and indigenous Johnson grass (S. halepense). Madras Agricultural Journal, 60 (9-12). pp. 1210-1216.
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Abstract
One triploid and 18 diploid hybrids were obtained from crosses between S. durra var. mediocre 'Co11' as pistillate parent and 4x and 2x lines of S. halepense, respectively. The diploid interspecific hybrids showed ten bivalents at metaphase I and normal meiosis. In the triploid, trivalents, bivalents and univalents were noted and the most frequent association was 7III + 3II + 3I. The hybrids showed the gross morphology of S. halepense but many intermediate characters were manifest, including tolerance of drought and Puccinia. None of the progeny of the diploid interspecific hybrid approached S. durra in compactness of panicle or grain size. Of 16 plants derived from the triploid interspecific hybrid, 14 had a chromosome number of 2n = 40 whilst one had 2n = 46 and another 2n = 50
| Item Type: | Article |
|---|---|
| Author Affiliation: | Agricultural College and Research Institute, Madurai, India |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 21 Jun 2012 10:14 |
| Last Modified: | 21 Jun 2012 10:14 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6153 |
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