Adaptive values of wild X cultivated sorghum (Sorghum bicolor (L.) Moench) hybrids in generations F1, F2, and F3

Muraya, M M and Geiger, H H and Sagnard, F and Toure, L and Traore, P C S and Togola, S and de Villiers, S and Parzies, H K (2012) Adaptive values of wild X cultivated sorghum (Sorghum bicolor (L.) Moench) hybrids in generations F1, F2, and F3. Genetic Resources and Crop Evolution, 59 (1). pp. 83-93. ISSN 1573-5109

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Gene flow between cultivated and their wild relatives is one of the main ecological concerns associated with the introduction genetically modified (GM) cultivars. GM sorghum cultivar has been developed and its commercial production may be possible in the near future. The rate of gene flow depends on the fitness of wild 9 cultivated sorghum hybrids. The study aimed at estimating adaptive values of wild 9 cultivated sorghum hybrids in generations F1, F2, and F3 compared to their parents. Artificial crosses of four wild sorghums, five cultivated sorghums, and two male sterile lines were made to produce the F1 generation, which were advanced to F2 and F3. Each hybrid generation and their respective parents were evaluated for their adaptive value at two sites in a randomised complete block design with seven replicates. The resulting progenies did not show serious fitness penalties. Some hybrids were as fit as their respective wild parents and no consistent differences exist between the three generations studied. Thus, the resultant wild 9 cultivated hybrids may act as avenue for introgression.

Item Type: Article
Uncontrolled Keywords: Adaptive value; Ecological risk; Gene flow; Introgresssion; Sorghum bicolor; Wild X cultivated hybridisation; Wild-crop hybrids
Subjects: Mandate crops > Sorghum
Depositing User: Users 6 not found.
Date Deposited: 04 Jan 2012 08:31
Last Modified: 04 Jan 2012 08:31
Official URL:
Acknowledgement: UNSPECIFIED
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