Breeding for low input conditions and consequences for participatory plant breeding: Examples from tropical maize and wheat

Banziger, M and Cooper, M (2001) Breeding for low input conditions and consequences for participatory plant breeding: Examples from tropical maize and wheat. Euphytica, 122 3: 503-519. doi:10.1023/A:1017510928038


Author Banziger, M
Cooper, M
Title Breeding for low input conditions and consequences for participatory plant breeding: Examples from tropical maize and wheat
Journal name Euphytica   Check publisher's open access policy
ISSN 0014-2336
Publication date 2001
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1023/A:1017510928038
Volume 122
Issue 3
Start page 503
End page 519
Total pages 17
Editor E. Jacobsen
Place of publication Dordrecht, The Netherlands
Publisher Kluwer Academic Publishers
Collection year 2001
Language eng
Subject C1
300203 Plant Improvement (Selection, Breeding and Genetic Engineering)
620100 Field Crops
Abstract Participatory plant breeding (PPB) has been suggested as an effective alternative to formal plant breeding (FPB) as a breeding strategy for achieving productivity gains under low input conditions. With genetic progress through PPB and FPB being determined by the same genetic variables, the likelihood of success of PPB approaches applied in low input target conditions was analyzed using two case studies from FPB that have resulted in significant productivity gains under low input conditions: (1) breeding tropical maize for low input conditions by CIMMYT, and (2) breeding of spring wheat for the highly variable low input rainfed farming systems in Australia. In both cases, genetic improvement was an outcome of long-term investment in a sustained research effort aimed at understanding the detail of the important environmental constraints to productivity and the plant requirements for improved adaptation to the identified constraints, followed up by the design and continued evaluation of efficient breeding strategies. The breeding strategies used differed between the two case studies but were consistent in their attention to the key determinants of response to selection: (1) ensuring adequate sources of genetic variation and high selection pressures for the important traits at all stages of the breeding program, (2) use of experimental procedures to achieve high levels of heritability in the breeding trials, and (3) testing strategies that achieved a high genetic correlation between performance of germplasm in the breeding trials and under on-farm conditions. The implications of the outcomes from these FPB case studies for realizing the positive motivations for adopting PPB strategies are discussed with particular reference for low input target environment conditions.
Keyword Agronomy
Plant Sciences
Horticulture
Farmer-participation
Genotype-by-environment
Low Input Conditions
Maize
Plant Breeding
Wheat
Affecting Grain-sorghum
Nitrogen Target Environments
Water-stress Environments
Low Soil-nitrogen
Drought Tolerance
8 Cycles
Ecophysiological Analyses
Selection Strategy
Varietal Selection
Yield Adaptation
Q-Index Code C1

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Agriculture and Food Sciences
 
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Created: Tue, 14 Aug 2007, 16:25:49 EST