Establish the born critical concentration: 0.002mg/kg. Boron-high-efficiency Arabidopsis ecotype Lersberg has fertility while boron-low-efficiency Arabidopsis ecotype Columbia has no fertility.

• 建立了拟南芥硼营养效率临界浓度，确定0.；002mg/kg的营养条件下高效生态型Lersberg能够正常结实而低效生态型Columbia不能结实。