稻瘟病是水稻的一种主要病害.由于稻瘟病菌(Pyricularia oryzae Cuv.)生理小种的多样性和小种致病性的不断变化,使得选育抗谱广、抗性稳定的水稻品种成为一大难题.转育(或选择)含多个抗性基因的品种是解决这一问题的有效途径.然而,不同的抗病基因对某个生理小种的反应可能完全一致,因此,传统的靠接种进行观察选择很难达到选择多个抗性基因的目的.此外,直接进行人工接种,显然受到时间和环境的影响,因而选择的准确性不高. Rice blast is one of the main diseases of rice.Due to the diversity of race and the pathogenicity of the race of Pyricularia oryzae Cuv. A major challenge is to breed (or select) varieties with multiple resistance genes as an effective way to solve this problem.However, the responses of different disease-resistance genes to one physiological race may be exactly the same, therefore, the traditional Selection by inoculation is difficult to achieve by selecting multiple resistance genes, and in addition, direct inoculation is apparently time-and environment-dependent, so the accuracy of the selection is not high.