【摘要】 1990～1993年间,引用中国春全套单体系列和抗叶锈病小麦近等基因系(或单基因系)为材料,采用单体遗传分析和基因推导相结合的方法,对冬小麦品种北京837抗叶锈病基因进行染色体定位研究,明确其对生理小种叶中1号的抗性系由分别位于染色体1B和6B上的两个显性互补基因所控制。位于1B染色体上的基因可能是Lr26,位于6B上的可能是Lr3a,二者可抵抗我国小麦叶锈菌群体中的部分生理小种(或毒性基因组合)。更多还原

【Abstract】 During 1990-1993, a set of 21 monosomics of Chinese Spring and 8 near-isogenic Thatcher lines of wheat resistance to leaf rust was used to locate the leaf rust resistance genes of Beijing 837, a new wheat cultivar developed by CAAS. As the results indicated, the resistance of the cultivar to Puccinia recondita f. sp. tritici race CLR I was controlled by two complementary dominant genes located on chromosome 1B and 6B, respectively. The presence of Lr26 on chromosome 1B and Lr3a on chromosome 6B was also postulated by use of 8 P. recondita cultures previously characterized for the different avirulence and virulence gene combination.更多还原