THE RELATIONSHIP BETWEEN GENOTYPES OF 3 BRASSICA SPECIES AND COLLECTIONS OF PLASMODIOPHORA-BRASSICAE
THE RELATIONSHIP BETWEEN GENOTYPES OF 3 BRASSICA SPECIES AND COLLECTIONS OF PLASMODIOPHORA-BRASSICAE
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DOI：
10.1111/j.1365-3059.1983.tb02855.x
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发表时间：
1983-01-01
期刊：
影响因子：
2.7
通讯作者：
CRISP, P
中科院分区：
文献类型：
--
作者：
CRUTE, IR;PHELPS, K;CRISP, P
国际上收集的有关芸苔疫霉致病性和3种芸苔属植物根肿病抗性变异的资料，与其他实验证据一起，被用来阐明这种宿主-寄生虫关系的主要遗传特征。B抗性的主要成分。campestris和B.甘蓝型油菜是差异的，可能是寡基因的。良好的协议之间的数据和简单的基因对基因的计划。相反，大多数B中的主要阻力成分。甘蓝基因型表现出非差异性，并且存在病原体变异性的证据，用于非差异性致病性。对任何抗性B的致病性之间有很强的关联。campestris基因型和所有抗性B。甘蓝型油菜的基因型是明显的，这表明可能有共同的基因。有证据表明，P. brassicae收集携带一定的特征，这两个物种的致病力差异。在B上致病性较低。橄榄科。然而，没有其他证据表明病原体专化到特定的宿主物种。采用了几种分析方法，这可能有助于澄清其他宿主-寄生虫组合的重要特征。
Internationally collected data concerned with variation for pathogenicity in P. brassicae and for clubroot resistance in 3 Brassica spp., together with additional experimental evidence, were used to elucidate the major genetic features of this host-parasite relationship. The major components of resistance of B. campestris and B. napus were differential and probably oligogenic. Good agreement was found between the data and simple gene-for-gene schemes. In contrast, the major component of resistance in most B. oleracea genotypes appeared non-differential and there was evidence of pathogen variability for non-differential pathogenicity. A strong association between pathogenicity on any resistant B. campestris genotype and on all resistant B. napus genotypes was apparent, suggesting the possibility of genes in common. There was evidence that P. brassicae collections carrying certain characters for differential pathogenicity on these 2 spp. were less pathogenic on B. oleraceae. However, there was no other evidence of pathogenic specialization to a particular host species. Several analytical procedures were employed which may prove useful in clarifying the important features of other host-parasite combinations.