A CAPS marker TAO1902 diagnostic for the I-2 gene conferring resistance to Fusarium oxysporum f. sp. lycopersici race 2 in tomato

A CAPS marker TAO1902 diagnostic for the I-2 gene conferring resistance to Fusarium oxysporum f. sp. lycopersici race 2 in tomato

2007

GATES/VBSS AFRICA, Supplies

E01388

Fusarium oxysporum f. sp. lycopersici inhabits most tomato-growing regions worldwide, causing tomato production yield losses. A molecular marker linked to resistance would be useful for tomato improvement programmes. Thus, a cleaved amplified polymorphic sequence (CAPS) marker TAO1902 was developed to identify tomato genotypes possessing the I-2 gene, which confers resistance to F. o. lycopersici race 2. The RsaI or FokI restriction fragments corresponded to the presence or absence of the I-2 allele in a segregating 100 F2 progeny, tomato cultivars, 16 resistant and 20 susceptible to Fusarium wilt, respectively, lines and F1 hybrids, representing various tomato gene pools. TAO1902 may be helpful for selection of F. o. lycopersici-resistant tomato germplasm.

v.126(3):331-333, PLANT BREEDING

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