Abstract: The inheritance of resistance to the strain RS-68 of Xanthomonas oryzae pv. oryzicola in four indica rice cultivars (Dular, IR26, IR36 and IR1545-339) were studied. Based on the analysis of population variations in lesion length in hybrids including F₁,F₂,BC₁ and BC₂ derived from four combinations by those resistant cultivars with a susceptible cultivar Jingang 30. It was found that the resistance of Dular, IR26 and IR1545-339 to the pathogen wes respectively controlled by one pair of dominant genes, and the resistance of IR36 was controlled by a recessive gene. ReplaceFont('ChDivSummary','对水稻细菌性条斑病表现高抗的Ｄｕｌａｒ、ＩＲ２６、ＩＲ３６和ＩＲ１５４５－３３９等４个籼稻品种与感病品种金刚３０杂交并分别与双亲回交，获得Ｆ１、Ｆ２、ＢＣ１和ＢＣ２。在隔离网室用细菌性条斑病菌株ＲＳ－６８接种不同世代群体，根据其抗感反应推断：ＩＲ３６的抗病性是由一对隐性主效基因控制的，Ｄｕｌａｒ、ＩＲ２６和ＩＲ１５４５－３３９三个品种的抗病性分别由一对显性基因控制，Ｄｕｌａｒ和ＩＲ１５４５－３３９的抗病基因呈非等位关系。');ReplaceFont('EnDivSummary','The inheritance of resistance to the strain RS-68 of Xanthomonas oryzae pv. oryzicola in four indica rice cultivars (Dular, IR26, IR36 and IR1545-339) were studied. Based on the analysis of population variations in lesion length in hybrids including F1,F2,BC1 and BC2 derived from four combinations by those resistant cultivars with a susceptible cultivar Jingang 30. It was found that the resistance of Dular, IR26 and IR1545-339 to the pathogen wes respectively controlled by one pair of dominant genes, and the resistance of IR36 was controlled by a recessive gene.');if(document.getElementById('ChDivSummary') != null && document.getElementById('ChDivSummary').innerHTML!=""){CutSpan('ChDivSummary',500);DisplaySpanDiv('ChDivSummary');ClearSummaryOnLoad('SummaryLinkChID','SummaryLinkEnID');} if(document.getElementById('EnDivSummary') != null && document.getElementById('EnDivSummary').innerHTML!=""){CutSpan('EnDivSummary',1000);DisplaySpanDiv('EnDivSummary');ClearSummaryOnLoad('SummaryLinkEnID','SummaryLinkChID');}ReplaceChar1('ChDivSummary');ReplaceChar('ChDivSummary');ReplaceChar1('EnDivSummary');ReplaceChar('EnDivSummary');

Key words: inheritance, resistance, Xanthomonas oryzae pv. oryzicola

摘要： 对水稻细菌性条斑病表现高抗的 Dular、IR26、IR36和IR1545-339 等4个籼稻品种与感病品种金刚30杂交并分别与双亲回交，获得F₁、F₂、BC₁和BC₂。在隔离网室用细菌性条斑病菌株RS-68接种不同世代群体，根据其抗感反应推断：IR36的抗病性是由一对隐性主效基因控制的，Dular、 IR26和IR1545-339三个品种的抗病性分别由一对显性基因控制，Dular和IR1545339的抗病基因呈非等位关系

关键词: 细菌性条斑病, 抗病性