3.4 Kernel number reduction of Te, Tr, and Te×Tr maize
To compare kernel number response to high temperature of Te, Tr, and Te×Tr maize, kernel number reductions (KNR, %) of 162 maize inbred lines were calculated as (KN/ear at sowing date 1 - KN/ear at sowing date 2)/ KN/ear at sowing date 1 × 100 in 2015 and 2016, respectively (Figure 3). KNR ranged from 26.6% to 100% in Te, 11.1% to 100% in Tr, and 19.2% to 100% in Te×Tr, respectively, with the mean of 80.9%, 73.2%, and 75.2% in 2015. The range of KNR was smaller in 2016 than in 2015, with 84.6 - 100% in Te, 54.7 - 100% in Tr, and 54.3 - 100% in Te×Tr and mean values of 97.7%, 94.5%, and 96.9%. The differences in the mean of KNR between Te and Tr were significant.