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Chapitre D'ouvrage Année : 2009

Crop ecophysiology as a key tool for improving grain, protein and oil quality through crop management and breeding

Résumé

This chapter considers the genetic basis of yield potential and the implications for breeding, identifies barriers to future gains in yield potential, and assesses the scope for the use of physiological tools to select for high yield potential. Yield potential is the yield of cultivars when grown in environments to which they are adapted with nutrients and water nonlimiting and with pests, diseases, weeds, and other stresses effectively controlled. It is somewhat theoretical since “optimal” radiation and temperatures, for example, most likely interact with genotype and growth stage. This differs from the attainable yield, which corresponds to the best yield achieved through skillful use of the best available technology. On-farm yields normally realize from 60 to 80% of attainable yield; the gap relates to the physical environment being suboptimal on most farms and to moderate use of fertilizer and crop protection measures in environmentally sensitive farming. The yield gap may therefore be quite large, especially in the more marginal environments.
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Dates et versions

hal-01174304 , version 1 (08-07-2015)

Identifiants

  • HAL Id : hal-01174304 , version 1
  • PRODINRA : 306666

Citer

Luis Aguirrezábal, Pierre Martre, Gustavo Pereyra-Irujo, Natalia Izquierdo, Vincent Allard. Crop ecophysiology as a key tool for improving grain, protein and oil quality through crop management and breeding. Crop Physiology: Applications for Genetic Improvement and Agronomy, Academic Press - Elsevier, 580 p., 2009, 978-0-12-374431-9. ⟨hal-01174304⟩
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