Disease response of resynthesized Brassica napus L lines carrying different combinations of resistance to Plasmodiophora brassicae Wor
Disease response of resynthesized Brassica napus L lines carrying different combinations of resistance to Plasmodiophora brassicae Wor
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DOI：
10.1111/j.1439-0523.1996.tb00862.x
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发表时间：
1996-04-01
期刊：
影响因子：
2
通讯作者：
Sacristan, MD
中科院分区：
文献类型：
--
作者：
Diederichsen, E;Sacristan, MD
研究了人工合成的甘蓝型油菜品系对根肿病的抗性反应。来自根肿病抗性B.芜菁和抗性B。在温室和田间试验中，甘蓝表现出非常广泛和有效的抗性。将根肿病抗性导入来自B的再合成系。甘蓝亲本，植株主要感病。来自抗性最强的亲本基因型即B的种间杂种。campestris ECD-04和B.甘蓝栽培种ECD-15或“Bohmerwaldkohl”用于引发B。油菜抗性育种方案。这些人工油菜品系对所有B上的致病菌株都有抗性。napus分化系和/或亲本系。初步分离分析表明，它们的抗性是由于至少两个显性和不连锁的。在某些情况下，自交再合成植株的后代表现出与亲本杂交植株不同的抗性反应，这可能是细胞学不稳定的结果。
Resistance responses of resynthesized Brassica napus lines to infection with Plasmodiophora brassicae were investigated. Lines that were derived from interspecific crosses between clubroot-resistant B. rapa and resistant B. oleracea exhibited very broad and effective resistance in both greenhouse and field tests. When clubroot resistance was introduced into resynthesized lines from the B. oleracea parent only, the plants were mainly susceptible. Interspecific hybrids from the most resistant parental genotypes, i.e. B. campestris ECD-04 and the B. oleracea cultivars ECD-15 or 'Bohmerwaldkohl', were used to initiate a B. napus resistance-breeding programme. These artificial rapeseed lines were resistant to isolates that were virulent on all B. napus differential lines and/or parental lines. Preliminary segregation analysis suggests that their resistance is due to at least two dominant and unlinked In some cases progenies from selfed resynthesized plants exhibited resistance reactions that differed from those of the parental hybrid plant; this may have been the result of cytological instability.