AEROPONICS CHAMBERS FOR EVALUATING RESISTANCE TO APHANOMYCES ROOT-ROTOF PEAS (PISUM-SATIVUM)

An aeroponics system was used for evaluating resistance of peas to Aph anomyces euteiches. Five pea genotypes were tested for resistance to t wo isolates of A. euteiches at concentrations of 0 to 10,000 zoospores per milliter. Pea genotypes reacted differently to isolates of A. eut eiches. Genotype 86-2231 demonstrated the lowest amount of disease and Dark Skin Perfection the highest. Isolate 467 produced consistently h igher disease scores than isolate FBI. Inoculum concentration and isol ate X concentration effects were significant. This study provides evid ence that an aeroponics system can be useful in evaluating the reactio n of peas to A. euteiches.