TY  - BP
AU  - Braun,H.J.
AU  - Payne,T.S.
TI  - Chapter 1.  Mega-environment breeding
SN  - 978-970-648-181-8
PY  - 2012///
CY  - Mexico, D.F.
PB  - CIMMYT
KW  - Plant breeding
KW  - AGROVOC
KW  - Varieties
KW  - Wheat
KW  - Environment
N2  - Plant breeding, using the combined potential of conventional, physiological, molecular and genetically modified technologies will provide cultivars with greatly enhanced nutrient and water use efficiency, enhanced tolerance to heat and drought, resistance to diseases and appropriate end-use and nutritional quality and possibly most importantly, greater ability to cope with the increasing extremes in temperature and precipitation occurring at one location over years. Modern crop cultivars developed by seed companies, international crop research centres, and national breeding programs often exhibit very wide geographical adaptation, as well as broad adaptation to the range of environmental and management conditions that occur within and between a target population of environments, or mega-environments. To identify such cultivars, multi -location testing remains the most efficient system. International evaluation networks based on exchange of and free access to germplasm and multi -location testing are therefore a cornerstone in the strategies and efforts to develop wheat germplasm that is adapted to the increasingly variable growing conditions encountered due to global climate change. Information from such trials must be combined with information from managed-stress trials. Wide performance adaptation is essential to respond to global climate change, to the vagaries of spatial heterogeneity within farmers' fields and their production input management efficacies, and from unpredictable temporal climatic seasonal variability
T2  - Wheat physiological breeding I : interdisciplinary approaches to improve crop adaptation
ER  -