Field screening of tobacco genotypes was carried out with the objective of identifying potential sources of resistance against tobacco aphid, Myzus nicotianae; caterpillar, Spodoptera litura; budworm, Helicoverpa armigera and whitefly, Bemisia tabaci. The degree of resistance among the genotypes varied from low to high. The genotypes I514, TI1687, TI536, TI675, TI1068, TI1656, CU1097 were found resistant to budworm; TI1687, TI675, TI 1068, TI 1656, CU 1097 were resistant to aphid; 1514, CU 1097 TI 1687, TI 675, TI 1068, TI 536 were resistant to whitefly/leaf curl; 1514, CU 263, TI 536, TI 1687, CU 1097 and TN 86 were resistant to tobacco caterpillar. Information on relative levels of resistance in various genotypes and distinctive morphological and chemical characters was generated.
Nicotiana tabacum, host plant resistance, Helicoverpa armigera, Spodoptera litura, Myzus nicotianae, Bemisia tabaci
