Large-scale characterization of drought pattern: a continent-wide modelling approach applied to the Australian wheatbelt--spatial and temporal trends.

摘要: Plant response to drought is complex, so that traits adapted a specific type can confer disadvantage in another type. Understanding which type(s) of target prime importance for crop improvement. Modelling was used quantify seasonal patterns check variety across the Australian wheatbelt, using 123 yr weather data representative locations and managements. Two other genotypes were simulate impact maturity on pattern. Four major environment types summarized variability pattern over time space. Severe stress beginning before flowering common (44% occurrences), with (24%) or without (20%) relief during grain filling. High occurred from year year, differing geographical region. With few exceptions, all four most seasons, each location, management system genotype. Applications such characterization are proposed assist breeding research focus germplasm, genes interest environments. The method applied at continental scale highly variable environments could be extended crops, drought-prone regions around world, potential changes under future climates.