Fig. 7

Mature grain physiological parameters for TEJ-1 and TEJ-2. Impact of heat stress on mature seeds at whole plant level in TEJ-1 and TEJ-2 developing under control and heat stress (HS) conditions during grain filling. HS-I and HS-II refer to the duration of imposed HS i.e., 1–4 DAF (HS-I) and 1–10 DAF (HS-II). a Quantification of spikelet fertility (%) and b seed weight in grams at the whole plant level evaluated at the time of physiological maturity. Box plots show the median and the upper quartiles and black dots signify outliers (5th/95th percentile). N = 1500–3500 seeds from 4–6 plants per data point. For statistics, t-test was used to compare heat stressed mature seeds with respective controls (***p < 0.001; *p ≤ 0.05.)