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The peanut root-knot nematode ( Meloidogyne arenaria  race 1) is potentially a major pest of pepper cultivars belonging to the species  Capsicum chinense.  Greenhouse tests were conducted to: 1) compare the level of resistance to the peanut root-knot nematode exhibited by the recently released  C. chinense  germplasm line PA-353 to that exhibited by the  C. annuum  cv. Carolina Cayenne; 2) to determine the inheritance of the resistance in the  C. chinense  germplasm line PA-353; and 3) to determine the genetic relationship between the resistance exhibited by the  C. chinense  germplasm line PA-353 and that exhibited by the  C. annuum  cv. Carolina Cayenne. The level of resistance exhibited by the  C. chinense  germplasm line PA-353 was equal to the high level of resistance of the  C. annuum  cv. Carolina Cayenne. Evaluation of parental, F 1 , F 2 , and backcross populations of the cross between the resistant  C. chinense  germplasm line PA-353 and the susceptible  C. chinense  accession PA-350 indicated that the resistance in  C. chinense  is conditioned by a single dominant gene. The F 2  population of the interspecific cross between the resistant  C. chinense  germplasm line PA-353 and the resistant  C. annuum  cv. Carolina Cayenne did not segregate for resistance, indicating that the dominant resistance gene in  C. chinense  is likely allelic to or closely linked to a gene conditioning resistance in  C. annuum.  The availability of a simply inherited source of outstanding resistance makes breeding for peanut root-knot nematode resistance a viable objective in  C. chinense  breeding programs.

027 Genetic Analysis of Resistance to the Peanut Root-knot Nematode Exhibited by the Capsicum chinense Germplasm Line PA-353