METHOD: Life Cycle CONDITIONS: Green House - 16h light at 23-25C METHOD NARR: No-choice experiments were used to determine leaf consumption and the effect of feeding on larval development. Mortality rates were monitored. Trichooalkaloid analyses were done. Quantitation and characterization of total foliar gycoalkaloids were accomplished using thin-layer chromatography. RESULTS NARR: Considerable inhibition of leaf consumption by larvae was show310926, ber265858, and chc320123. All accessions showed a significant decrease in larval mass except rap. The highest larval mortality rates were on trf283104, chc320123, ber265858 and ber310926. Ber had the highest density o Trf had ~one-third the density of ber whith both types lacking glands. Crc had no visible trichome structures. TGC were low in crc and trf; medium to low in rap and chc320311; high in ber and chc320123. The most abunfdant glycoalka and soanine. AUTHOR EXPLANATION: Trf, which has no glandular trichomes, or detected glycoalkaloids, demonstrated antifeeding and developmental retardant levels comparible to ber. Trf accessions exhibited effective ressed by an antinutritive or deterrent mechanism.