Plant Materials. Two sets of near-isogenic tomato
lines were used for our bioassays: the susceptible lines
Moneymaker and Castlerock II (mi/mi), and the corresponding
resistant isolines, Motelle and Sun6082
(Mi/Mi). These plants were grown under greenhouse
conditions (23Ð278C, 16:8 [L:D] h) in 0.25m3 pots of
Redi Gro soil mixture (Redi Gro, Sacramento, CA)
amended with 13-13-13 N:P:K Nutricote slow release
fertilizer (Plantco, Ontario, Canada). The plants were
watered once daily with distilled water, and fertilized
weekly with a foliar application of Miracle-Gro
(SternÕs Miracle-Gro Products, Port Washington,
NY). All plants were grown in insect exclusion cages
to prevent any insect herbivory