Fig 1.

Confirmation of the role of Apq1 in high-temperature tolerance. (A) Percentages of indicated kernel phenotypes of ‘Koshihikari’ and Apq1-NIL grown under low- and high-temperature conditions during the ripening stage. (B) Percentages of basal-white and white-back kernels, measured to compare high-temperature tolerance. Each spikelet was marked at opening and fertilization day under low-temperature condition and incubated for three days under high temperature. The numbers in the X-axis indicate initial day of three days high-temperature treatment. Error bars indicate standard deviation. ** p < 0.01, * p < 0.05 (Student’s t-test).