Abstract
A series of greenhouse tests were conducted to compare the level of resistance to the southern root-knot nematode (Meloidogyne incognita) exhibited by recently released Capsicum chinense germplasm lines to the level of resistance exhibited by C. annuum cultivars, to determine the inheritance of the resistance in C. chinense, and to determine genetic relationship between the resistances exhibited by C. chinense and C. annuum. The results of a replicated test indicated that the level of resistances exhibited by the recently released C. chinense germplasm lines PA-353, PA-398, and PA-426 is equal to the level of resistances exhibited by the resistant C. annuum cultivars Mississippi Nemaheart and Carolina Cayenne. Evaluation of parental, F1, F2, and backcross populations of the cross PA-426 × PA-350 indicated that the resistance in C. chinense is conditioned by a single dominant gene. The results of an allelism test indicated that this dominant gene is allelic to the N gene that conditions southern root-knot nematode resistance in the C. annuum cultivar Carolina Cayenne. The availability of a simply inherited source of outstanding resistance makes breeding for southern root-knot nematode resistance a viable objective in C. chinense breeding programs. This objective should be readily obtained by the application of conventional plant breeding methodologies.
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