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Inheritance of resistance to root-knot nematodes in pepper



Inheritance of resistance to root-knot nematodes in pepper



Phytopath 47(8): 455-459



The evidence from F1, F2, and F3 generations of crosses of Santanka xS, a pepper (Capsicum frutescens) resistant to Meloidogyne incognita, with 3 commercial bell varieties and from F1, F2, F 3, and backcross generations of a second resistant pepper, 405B Mexico, crossed with 2 commercial bell varieties fitted the hypothesis that resistance is controlled by a single gene. Resistance was dominant to susceptibility. The same gene or a very closely linked gene also controlled resistance to M. incognita acrita. Behavior in both sets of crosses was similar, suggesting that the same gene pair was involved. The symbols N and n are suggested for this gene pair. All of the parents were resistant to M. arenaria and M. javanica. The described gene also may have controlled resistance to these nematodes, but no definite conclusions could be drawn from the data. All of the parents were susceptible to M. hapla.

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