Identification of adult plant resistance to stripe rust in the wheat cultivar Cappelle-Desprez
Identification of adult plant resistance to stripe rust in the wheat cultivar Cappelle-Desprez
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DOI：
10.1007/s00122-012-1819-5
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发表时间：
2012-06-01
影响因子：
5.4
通讯作者：
Prins, R.
中科院分区：
文献类型：
--
作者：
Agenbag, G. M.;Pretorius, Z. A.;Prins, R.
自1996年南非出现条锈病以来，人们一直在努力寻找新的持久抗性来源。法国品种Cappelle-Desprez长期以来一直被认为是持久的成年植物对条锈病的抗性(APR)的来源。由于Cappelle-Desprez含有苗期抗性基因，小麦品系已育成并已被去除，在筛选对南非小麦条锈菌致病型有效的Cappelle-Desprez衍生APR的同时，选择适应南非小麦生长条件的F.sp品系Yr16DH70与感病品种Palmiet杂交，建立分离的重组自交系作图群体。在来自Cappelle-Desprez的2A染色体的短臂上发现了1个主效QTL，以及3个效应较小的QTL，-和-位于2D染色体短臂上的一个区域，被认为是抗条锈病基因的位置。在cv中还发现了一个额外的次要效应QTL。帕尔米特。对携带单个QTL或每个QTL组合的RIL的检测表明，当-与来自Cappelle-Desprez的三个较小的QTL组合以及在-和-之间时，具有显著的抗性效应。
Following the appearance of stripe rust in South Africa in 1996, efforts have been made to identify new sources of durable resistance. The French cultivar Cappelle-Desprez has long been considered a source of durable, adult plant resistance (APR) to stripe rust. As Cappelle-Desprez contains the seedling resistance genes and wheat lines were developed from which and had been removed, while selecting for Cappelle-Desprez derived APR effective against South African pathotypes of the stripe rust fungus, f. sp Line Yr16DH70, adapted to South African wheat growing conditions, was selected and crossed to the stripe rust susceptible cultivar Palmiet to develop a segregating recombinant inbred line mapping population. A major effect QTL, - was identified on the short arm of chromosome 2A derived from Cappelle-Desprez, along with three QTL of smaller effect, -- and -- was located within a region on the short arm of chromosome 2D believed to be the location of the stripe rust resistance gene . An additional minor effect QTL, - was identified in the cv. Palmiet. An examination of individual RILs carrying single or combinations of each QTL indicated significant resistance effects when - was combined with the three minor QTL from Cappelle-Desprez, and between - and -.