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Cultivar reactions and the genetic basis of resistance to alternaria stem canker alternaria alternata f sp lycopersici in tomato



Cultivar reactions and the genetic basis of resistance to alternaria stem canker alternaria alternata f sp lycopersici in tomato



Plant Pathology 37(3): 373-376



The reactions of several tomato cultivars and the genetic basis of resistance to an isolate of Alternaria alternata f. sp. lycopersici were examined. Among the 105 cultivars tested only two, Regal and Toper, were susceptible, while the remainder were highly resistant. The resistant cultivar ACE 55 VF (P2) was crossed with the susceptible cultivar Earlypak No. 7 (P1). When F1, F2, F3, BC1, BC1 selfed, F2 .times. P1 and BC1P2 .times. P1 progenies were inoculated at the two-leaf stage with a suspension of spores of the pathogen, the ratios of resistant to susceptible plants indicated that resistance was conferred by a single dominant gene.

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Accession: 007170281

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DOI: 10.1111/j.1365-3059.1988.tb02087.x


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