Progress in breeding of irrigated wheat for the Cerrado region of Brazil

This study aimed to quantify the progress obtained by breeding programs of irrigated wheat in the state ofMinas Gerais, Brazil, from 1976 to 2005. The efficiency of the programs was evaluated based on yield data obtained in Valuefor Cultivation and Use (VCU) trials. The genetic and environmental pro...

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Published inCrop breeding and applied biotechnology Vol. 8; no. 1; pp. 39 - 46
Main Authors Cargnin, A., Souza, M.A., Fronza, V.
Format Journal Article
LanguageEnglish
Published Vicosa Crop Breeding and Applied Biotechnology 2008
Brazilian Society of Plant Breeding
Subjects
breeding
genetic gain
genotype evaluation
Plant breeding
Triticum aestivum L
Wheat
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Summary:This study aimed to quantify the progress obtained by breeding programs of irrigated wheat in the state ofMinas Gerais, Brazil, from 1976 to 2005. The efficiency of the programs was evaluated based on yield data obtained in Valuefor Cultivation and Use (VCU) trials. The genetic and environmental progress was estimated by the methodology of Vencovskyet al. The mean annual progress rate from 1976 to 2005 in mean yield was estimated to be 48 kg ha-1 yr-1 (1.84% per year).Environmental and technological improvements were important for the increased yield during the study period, accountingfor 32.8% of the total gain. Over the years, 33% of the genotypes used in the improvement programs of irrigated wheat werereplaced.
ISSN:1984-7033
1518-7853
1984-7033
DOI:10.12702/1984-7033.v08n01a06