Regulation and Genetic Analysis of Leaf Source Capacity in Rice

<正> The highest value of photosynthetic rate and active photosynthesis duration in flag leaves could be increased in a range of 3.55% and 3 d by dressing N (112.5 kg/ha) at heading stage in hybrid rice variety cv. Shanyou63 compared with control (no dressing N at heading), respectively. This resulted in the 7.93 percentage and 5.70 percentage increases of its leaf source capacity (LSC) and yield, respectively. Furthermore, genetic analysis of LSC was made by 4× 4 incomplete diallel cross-design with 4 sterility lines and 4 resilience