The inheritance of the root–knot
nematode, Meloidogyne incogenita Race
2, resistance in the crosses segregation
ratio in pepper cultivars, capsicum
annuum, suggested a single dominant
gene for the high level of resistant.
Although the data on disease expression
were recorded on 1 to 5 scale gall index,
the results and subsequent observation
fitted a single gene model for resistance
better than a quantitative pattern. In
general, the overall results for evaluation
of pepper F1 progeny reaction to the root
knot nematode using specific ISSR
markers showed that, both crosses (P7xP5)
and (P7xP4) exhibited five specific marker
bands for highly resistance to root knot
nematode. One of these specific marker
bands with molecular size 860 bp, in
(P7xP5), did not appear in either resistant
or susceptible parents. In addition, the
cross (P7xp3) gave only one specific
marker band with molecular size 344 bp
for resistance to root knot nematode. |
