Spike phenological development of the four genotypic combinations with and without GA3 treatment in the three experiments.

Data are the duration days (d) with calculated thermal time (°C d) in parenthesis; SW: sowing date, DR: double ridge formation date, AN: anthesis date. All data are means of each genotype. Statistical analysis was carried out using the thermal time. Different letters within columns indicate statistically significant differences (P0.05).本数据集包含生育期天数（单位：d），括号内为计算得到的热时间（单位：°C·d）；SW（播种日期，Sowing Date）、DR（双脊形成日期，Double Ridge Formation Date）、AN（开花日期，Anthesis Date）。所有数据均为各基因型的平均值。统计分析基于热时间开展。列内不同字母表示存在统计学显著性差异（P0.05）。