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Stability of drought tolerant maize genotypes in the drought stressed areas of Ethiopia

By: Seboksa, G | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya | 7. Proceedings of the Eastern and Southern Africa Regional Maize Conference Nairobi (Kenya) 5-11 Feb 2002.
Contributor(s): Bogale, G [coaut.] | Friesen, D.K.|Palmer, A.F.E [eds.] | Nigussie, M [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 301-304.ISBN: 970-648-120-6.Subject(s): Drought resistance | Ethiopia | Fields | Food crops | Genotype environment interaction AGROVOC | Industrial crops | Maize | Stress | Yield factors | CIMMYT | KARI | Zea mays AGROVOC | Plant breeding AGROVOCDDC classification: 338.16 Summary: Drought stressed areas devoted to maize (Zea mays L.) production occupy 40% of the maize growing area but contribute only about 20% to the total maize production in Ethiopia. Unavailability of suitable maize varieties is responsible for such a yield gap. Taking this problem into account the Melkasa Maize Programme introduced and evaluated 400 experimental maize populations at Melkasa Research Center maize quarantine field. Then, 19 promising maize genotypes were selected and evaluated at six locations for three years to determine their performance and stability. The combined analysis of variance showed highly significant (p < 0.01) genotype, environment, genotype x environment, and genotype x year effects on grain yield. Genotype DTP-1 C6 with regression coefficient close to 1.0 and small deviations from regression, was fairly stable across environments and had mean yield above the grand mean. Genotypes Banswara 9331 and La Posta Seq. C5 were more productive where growing conditions were better. Hence, it is suggested that genotype DTP-1 C6 has potential for future use in the drought-prone areas of the country.Collection: CIMMYT Publications Collection
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Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 338.16 FRI (Browse shelf) 1 Available 1G630188
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Drought stressed areas devoted to maize (Zea mays L.) production occupy 40% of the maize growing area but contribute only about 20% to the total maize production in Ethiopia. Unavailability of suitable maize varieties is responsible for such a yield gap. Taking this problem into account the Melkasa Maize Programme introduced and evaluated 400 experimental maize populations at Melkasa Research Center maize quarantine field. Then, 19 promising maize genotypes were selected and evaluated at six locations for three years to determine their performance and stability. The combined analysis of variance showed highly significant (p < 0.01) genotype, environment, genotype x environment, and genotype x year effects on grain yield. Genotype DTP-1 C6 with regression coefficient close to 1.0 and small deviations from regression, was fairly stable across environments and had mean yield above the grand mean. Genotypes Banswara 9331 and La Posta Seq. C5 were more productive where growing conditions were better. Hence, it is suggested that genotype DTP-1 C6 has potential for future use in the drought-prone areas of the country.

English

0410|AGRIS 0401|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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