Waite Agricultural Research Institute, 5064, Glen Osmond, South Australia.
Theor Appl Genet. 1990 May;79(3):331-6. doi: 10.1007/BF01186075.
The cereal cyst nematode,Heterodera avenue Wollenweber, is a serious pest of cereals in many countries. A high level of resistance to the unique Australian pathotype of the nematode has been demonstrated in a triticale line (T701-4-6), which was originally obtained from CIMMYT. The level of resistance is similar to that in rye cultivar, South Australian, but higher than that in the wheat line (AUS 10894), hitherto reported to have useful resistance to the Australian pathotype. The gene for resistance was located on rye chromosome 6 (6R) after backcrossing the T701-4-6 line to wheat and correlating the resistance with the presence of individual rye chromosomes identified by morphological, cytological, and isozyme markers. Preliminary evidence suggests that the gene is located on the long arm of6R. To transfer the resistance to wheat, double monosomics of6R and6D in aph1bph1b homozygous background were selected from F2 progeny from a cross of disomic6R substitution for6D to theph1b mutant. Selfed seeds from these F2 plants will be screened for wheat-rye chromosome recombinants.
谷物胞囊线虫， Heterodera avenue Wollenweber，是许多国家谷物的严重害虫。在源自 CIMMYT 的黑小麦品系（T701-4-6）中，已证明对独特的澳大利亚生理小种具有高水平的抗性。该抗性水平与黑麦品种（南澳）相似，但高于迄今报道对澳大利亚生理小种具有有用抗性的小麦品系（AUS 10894）。抗性基因位于黑麦染色体 6（6R）上，方法是将 T701-4-6 系回交小麦，并将抗性与通过形态学、细胞学和同工酶标记鉴定的单个黑麦染色体的存在相关联。初步证据表明，该基因位于 6R 的长臂上。为了将抗性转移到小麦上，从双单体 6R 和 6D 自交 F2 后代中选择 aph1bph1b 纯合背景下的双单体 6R 和 6D，方法是将 6D 的二体替换到 ph1b 突变体中。这些 F2 植物的自交种子将被筛选用于小麦-黑麦染色体重组体。
