The results indicate that there is a different genetic background responsible for rice seedling root growth under lowland and upland conditions.

• 溶液培养与纸培条件下没有一个检测到的QTL或一对互作位点完全相同，这一结果说明：在不同的水分条件下(如溶液培养和纸培)，水稻幼苗根系发生和形成的遗传机理不同。