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

Publikations-Art

Zeitschriftenbeitrag

Autoren

Muraya, Moses M., Hartwig H. Geiger, Fabrice Sagnard , Lassana Toure, Pierre C. S. Traore, Sabine Togola, Santie de Villiers, and Heiko K. Parzies

Erscheinungsjahr

2012

Veröffentlicht in

Genetic Resources and Crop Evolution 59: 83-93

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 × cultivated sorghum hybrids. The study aimed at estimating adaptive values of wild × 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 × cultivated hybrids may act as avenue for introgression. © 2011 Springer Science+Business Media B.V.