Comparison between the N and Me3 genes conferring resistance to the root-knot nematode (Meloidogyne incognita) in genetically different pepper lines (Capsicum annuum)
Comparison between the N and Me3 genes conferring resistance to the root-knot nematode (Meloidogyne incognita) in genetically different pepper lines (Capsicum annuum)
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DOI：
10.1007/s10658-009-9502-7
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发表时间：
2009-08
影响因子：
1.8
通讯作者：
J. Thies;J. J. Ariss-J.
中科院分区：
文献类型：
--
作者：
J. Thies;J. J. Ariss-J.
辣椒（Capsicum annuum）对me3和me3的抗性基因已经得到了很好的鉴定。然而，目前还没有研究直接比较这两种基因的影响，也没有研究两种基因同时存在时的综合影响。研究人员进行了几项研究，以调查thenandme3基因系统之间的关系，并评估这两个基因是等位基因还是真正独立的基因。在toM反应的重复温室试验中，比较了该基因的两个纯合子基因型（‘Carolina Wonder’和‘Charleston Belle’）和me3基因的两个纯合子基因型（HDA 149和PM 687）。incognitarace 3。携带enorme3基因的基因型间耐药反应无显著差异。利用亲本基因型HDA 149 בCharleston Belle’和HDA 149 בCarolina Wonder’的F2群体进行等位基因检测。这些研究的结果清楚地表明，thenandme3基因是不同的，独立的显性抗性基因，赋予抗性toM。认知缺陷3和非同一基因的等位基因。
Genetic resistance toMeloidogyne incognitain pepper (Capsicum annuum) has been well characterised for theNandMe3resistance genes. However, there are no studies comparing the effects of these two genes directly or investigating the combined effects when both genes are present together. Several studies were undertaken to investigate the relationship of theNandMe3gene systems to one another and to assess whether these two genes are allelic or truly separate genes. Two genotypes homozygous for theNgene (‘Carolina Wonder’ and ‘Charleston Belle’) and two genotypes homozygous for theMe3gene (HDA 149 and PM 687) were compared in a replicated greenhouse test for reaction toM. incognitarace 3. There were no significant differences between the resistant reactions of genotypes possessing theNorMe3gene. Allelism tests were performed using the F2 populations of the parental genotypes HDA 149 × ‘Charleston Belle’ and HDA 149 × ‘Carolina Wonder’. The results of these studies clearly show theNandMe3genes to be distinct, separate dominant resistance genes conferring resistance toM. incognitarace 3 and not alleles of the same gene.