Analysis of Polymorphisms in Materials Related to Rice NUE

To reduce the environmental burden associated with excessive nitrogen fertilizer use in rice cultivation, we developed NR160E, an early heading isogenic line derived from the high-yielding variety NSIC Rc 160 (NR160). Regression analysis of the relationship between nitrogen uptake and grain yield showed a significantly steeper slope in NR160E than in NR160, indicating enhanced physiological nitrogen-use efficiency.