Here, we revealed multiple action points for each phytochrome in the critical daylength response of florigen expression by using single and double phytochrome mutant lines of rice.
Short daylength had a cumulative effect on diapause induction.
短光照对滞育的诱导作用具有累积效应。
Highter temperature and longer daylength could accelerate the spike differentiation after the double ridge.
进入二棱后,高温长日照加速幼穗分化进程。
Therefore, each phytochrome gene of rice has distinct roles, and all of the phytochrome actions coordinately control the critical daylength response of florigen expression in rice.