Radiation Use Efficiency and Source‐Sink Changes of Super Hybrid Rice under Shade Stress during Grain‐Filling Stage

Core Ideas Super hybrid and regular hybrid varieties differed in their response to shade stress. Apparent exportation, apparent export ratio, and apparent transformation ratio significantly increased under shade stress. Maintaining higher radiation use efficiency and daily biomass production during grain‐filling stage may alleviate yield loss under shade stress. Continuous cloudy weather during grain‐filling stage has induced a significant rice...