Twenty genotypes of mustard were screened against aphid, Lipaphis erysimi (KALTENBACH).
The genotype SKM-0401 was the least susceptible with 1.47 aphid index/plant followed by the
genotypes SKM-0518, SKM-0445, SKM-0301 and SKM-0533 with 1.52, 1.53, 1.57 and 1.60
aphid index/ plant, respectively. The genotypes SKM-0531 was found the most susceptible (4.54
aphid index/ plant) followed by the genotypes GM-1, SKM-0529, GM-2, GM-3, SKM-0507 and
SKM-0109, which recorded 4.52, 4.40, 4.37, 4.29, 4.22 and 4.11 aphid index/ plant, respectively