【摘要】 本研究利用与稻瘟病抗性基因Piz-t、Pi-km、Pi-ta紧密连锁的SNP分子标记,对2010、2011和2012年陕西省水稻区域试验材料进行了基因型分型研究,同时结合田间稻瘟病抗性表现,分析了3个抗性基因和抗性表现之间的关系,结果显示:陕西省水稻区试材料含稻瘟病抗性基因有逐年增加的趋势,随着抗性基因位点的增多,抗病性也随之提高,Piz-t对抗病性影响较大。更多还原

【Abstract】 In this study,genotyping of three resistance genes Piz-t,Pi-km and Pi-ta was performed in rice via single nucleotide polymorphism( SNP) marker. Based on SNP marker,the relationship between genotype of the three genes and phenotype of resistance to blast was analyzed in rice produced in Shaanxi province Rice Test Zone during 2010 to 2012. The results demonstrated that loci associated with blast resistance increased year after year,which also enhanced the ability to resist rice blast. Additionally,Piz-t gene played the most significant role than the other two genes in resistance to rice blast.更多还原