Inheritance of loose smut (Ustilago tritici) resistance in two hexaploid wheat (Triticum aestivum) lines

Canadian Journal of Plant Pathology-revue Canadienne De Phytopathologie Pub Date : 1999-06-01 DOI:10.1080/07060669909501209

R. Knox, M. R. Fernandez, A. Brûlé-Babel, R. M. Pauw

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引用次数: 15

Abstract

The genetics of resistance in wheat (Triticum aestivum L.) to loose smut caused by Ustilago tritici (Pers.) Rostr. is not well understood. In this study the inheritance of loose smut resistance was studied in two androgenetically derived doubled haploid populations and two inbred random head-to-row populations. The loose smut resistant experimental wheat line HY377 was crossed with the loose smut susceptible line L8474-D1 and the resistant line SC8021V2. Androgenetically derived doubled haploid populations and F4-derived random inbred line populations were produced from each of the crosses HY377/L8474-D1 and HY377/SC8021V2. Lines derived from each cross were grown in the growth room and inoculated with individual and a mixture of races of loose smut. The segregation of resistance between HY377 and L8474-D1 to races T2, T10, T19, and T39 in both doubled haploid and random inbred line populations fit the expected ratio for a single major gene. The same populations inoculated to race T15 showed a different d...

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两个六倍体小麦品系抗松黑穗病的遗传研究

小麦(Triticum aestivum L.)对黑穗病黑穗病(Ustilago tritici, Pers.)抗性的遗传Rostr。不是很好理解。本研究在两个雄性遗传来源的双单倍体群体和两个随机自交的头对行群体中研究了松散黑穗病抗性的遗传。将抗松黑穗病试验小麦品系HY377与松黑穗病敏感品系L8474-D1和抗松黑穗病品系SC8021V2杂交。杂交组合HY377/L8474-D1和HY377/SC8021V2分别获得双单倍体群体和f4随机自交系群体。从每个杂交中获得的系在生长室内生长，用单个和松散黑穗病种的混合物接种。在双单倍体和随机自交系群体中，HY377和L8474-D1对T2、T10、T19和T39小种的抗性分离符合单个主基因的预期比例。同样的群体接种到T15后表现出不同的免疫反应。

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Canadian Journal of Plant Pathology-revue Canadienne De Phytopathologie

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