Rl. Fery et Ja. Thies, GENETIC-ANALYSIS OF RESISTANCE TO THE SOUTHERN ROOT-KNOT NEMATODE IN CAPSICUM CHINENSE JACQ, Journal of the American Society for Horticultural Science, 123(6), 1998, pp. 1008-1011
Greenhouse tests were conducted to compare the levels of resistance to
the southern root-knot nematode [Meloidogyne incognita (Kofoid & Whit
e) Chitwood] exhibited by recently released Capsicum chinense Jacq, Sc
otch Bonnet-type germplasm lines PA-353, PA-398, and PA-426 to the lev
els of resistance exhibited by C. annuum L. 'Carolina Cayenne' and 'Mi
ssissippi Nemaheart'; to determine the inheritance of the resistance i
n C. chinense germplasm line PA-426; and to determine the genetic rela
tionship between the resistances exhibited by C. chinense germplasm li
ne PA-426 and C, annuum 'Carolina Cayenne', The results of a replicate
d test indicated that the level of resistances exhibited by the recent
ly released C, chinense germplasm lines is equal to the level of resis
tances exhibited by the resistant C. annuum cultivars, Evaluation of p
arental, F-1, F-2, and backcross populations of the cross PA-426 x PA-
350 (a susceptible Habanero-type C. chinense cultigen) 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 dominant gene that renditions much of the southern roo
t-knot nematode resistance in the C. annuum 'Carolina Cayenne'. The ea
se and reliability of evaluating plants for resistance to root-knot ne
matodes and the availability of a simply inherited source of outstandi
ng resistance makes breeding for southern root-knot nematode resistanc
e a viable objective in C. chinense breeding programs.