Potential benefits of early vigor and changes in phenology in wheat to adapt to warmer and drier climates.

摘要: Abstract Developing crop cultivars with novel traits could help agriculture adapt to climate change. As introducing new into crops is expensive and time consuming, it helpful develop methods which can test whether a potential plant trait increases or maintains production in future climates. We used crop-soil simulation model (APSIM-Nwheat) changes physiological traits, related early vigor flowering time, would result increased yield when compared traditional of wheat grown at higher temperatures, elevated atmospheric CO 2 lower rainfall Mediterranean climate. Early was simulated by changing four different traits. The impact each on grain varied scenario soil type. Higher specific leaf area had minimal effect for the historical climate, but increase warmer Increased rooting depth generally positive yield, while radiation use efficiency earlier tended reduce yield. interaction between these positive, our results indicate that may improve range scenarios. However, low regions, unlikely compensate reductions ⩾30%. Yield gains are likely be larger sandy loam than heavier clay soil. differing showed drier climates warming later In conclusion, analyses suggest there great adapting systems change Our also show how assist breeders determining important