Effects of Rht12 on plant height, spike traits and yield components in the F2 progeny.

*Data are the duration days (d) with calculated thermal time (°C d) in parenthesis; SW: sowing date; AN: anthesis date. Karcagi and Nchun45 represent the two parents Karcagi (12) and Ningchun45, respectively. Data are means ±SD (standard deviation) of each genotype. Data of the two parents were not considered in the statistical significance testing. Different letters within columns indicate statistically significant differences (P