Performance of CIMMYT drought tolerant maize genotypes in the moisture deficit zone of Ethiopia
2001
Gezahegne Bogale(Nazreth Research Center, Nazreth (Ethiopia). Maize Breeders) | Mandefro Nigussie(Nazreth Research Center, Nazreth (Ethiopia). Maize Breeders) | Gelana Seboksa(Nazreth Research Center, Nazreth (Ethiopia). Maize Breeders)
Fifteen drought tolerant maize genotypes developed by CIMMYT and one local variety, A511, were evaluated for two seasons at four drought stressed locations in 1997 and 1998. The study was undertaken to determine the adaptability and stability of the genotypes in the moisture deficit zones of Ethiopia. Except for anthesis silking interval (ASI), the combined analysis showed significant (P0.01) genotype, environment, genotype x environment and genotype x year effects on grain yield, plant height and number of ears per plant (EPP). Stability analysis indicated that Across 89DTP1 was superior in yield, but more responsive to better environments. Although nine genotypes were relatively stable, SPEC sub(8) and DTP1C sub(6) were fairly stable across environments and had better yield levels than the other entries. Besides, SPEC sub(8) had high number of EPP, a trait related to drought tolerance. Therefore SPEC sub(8) and DTP1C sub(6) could be valuable materials in breeding maize for low moisture stress tolerance.
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