High night temperature induced changes in grain starch metabolism alters starch, protein, and lipid accumulation in winter wheat

Unlike sporadic daytime heat spikes, a consistent increase in night‐time temperatures can potentially derail the genetic gains being achieved. Ten winter wheat genotypes were exposed to six different night‐time temperatures (15–27°C) during flowering and grain‐filling stages in controlled environment chambers. We identified the night‐time temperature of 23 o C as the critical threshold beyond which a consistent decline in yields and quality was...