Variation in resistance to the root-knot nematode Meloidogyne incognita in tomato genotypes bearing the Mi gene
β Scribed by M. Jacquet; M. Bongiovanni; M. Martinez; P. Verschave; E. Wajnberg; P. Castagnone-Sereno
- Book ID
- 110094448
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 178 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0032-0862
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In the 1940's the root-knot nematode resistance gene (Mi) was introgressed into the cultivated tomato from the wild species, L. peruvianum, and today it provides the only form of genetic resistance against this pathogen. We report here the construction of a high resolution RFLP map around the Mi gen
## Summary A dominant allele at the __Mi__ locus on chromosome 6 of tomato (__Lycopersicon esculentum__ Mill) confers resistance to three species of rootβknot nematodes (__Meloidogyne__). The resistance, which is associated with a localized necrotic response, was originally introduced into tomato f
A PCR-based codominant marker has been developed which is tightly linked to Mi, a dominant genetic locus in tomato that confers resistance to several species of root-knot nematode. DNA from tomato lines differing in nematode resistance was screened for random amplified polymorphic DNA markers linked