Genetic analysis of resistance to Puccinia striiformis in the wheat differential cultivars Heines VII, Heines Peko and Strubes Dickkopf
Genetic analysis of resistance to Puccinia striiformis in the wheat differential cultivars Heines VII, Heines Peko and Strubes Dickkopf
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DOI：
10.1046/j.1365-3059.1997.d01-21.x
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发表时间：
1997-06
期刊：
影响因子：
2.7
通讯作者：
A. Calonnec;R. Johnson;C. Vallavieille-Pope
中科院分区：
文献类型：
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作者：
A. Calonnec;R. Johnson;C. Vallavieille-Pope
通过对差别品种 Heines Peko、Strubes Dickkopf 和 Heines VII 的遗传分析，鉴定出对条锈菌 6E0 小种 WYR 85-22 分离株的 1 个主要抗性基因。该基因与已在 Heines Peko (Yr2Yr6) 和 Heines VII (Yr2) 中鉴定的 Yr2Yr6 不同，在这三个品种中是等位基因，并且也与其他差异品种 Reichersberg 42 (Yr7) 和 Clement (Yr9) 中表达的基因相同。在 Heines Peko、Strubes Dickkopf 和 Heines VII 中，还假设了一种次要基因，该基因本身仅产生低水平的抗性，但当后者是纯合或杂合时，会增强主要基因的表达。使用六种抗性类别并应用多维分析来分析抗性的遗传学。抗性基因的数量是利用来自三个差异品种与易受该品种影响的品种 Heines Kolben 杂交的 F3 家族的数据来假设的。
One major gene for resistance to isolate WYR 85-22 of race 6E0 of Puccinia striiformis was identified by genetic analysis of the differential cultivars Heines Peko, Strubes Dickkopf and Heines VII. This gene was different from Yr2Yr6 already identified in Heines Peko (Yr2Yr6) and Heines VII (Yr2), was allelic in the three cultivars and also to a gene expressed in the other differentials Reichersberg 42 (Yr7) and Clement (Yr9). In Heines Peko, Strubes Dickkopf and Heines VII, a minor gene was also postulated, which, it is proposed, gave only a low level of resistance by itself but strengthened the expression of the major gene when the latter was homozygous or heterozygous. The genetics of the resistance was analysed using six resistance classes and applying multidimensional analyses. The number of resistance genes was hypothesized using data from F3 families from crosses between the three differentials and the cultivar Heines Kolben, which is susceptible to this race.