It could be seen from the data recorded at 30 DAT on average angle of leaf axis indicated that the angle of leaf axis of genotypes under the trial ranged from 3.50⁰ to 13.85⁰. Highest angle of leaf axis was observed in BSRO-1229 (13.85⁰), while the lowest angle of leaf axis was observed in BSRO-1246 (3.50⁰). The negative correlation exist between angle of leaf axis and thrips population (-0.926**).

It could be seen from the data recorded at 30 DAT, there were two categories of foliage colour yellow green and blue green was observed. The eleven genotypes having yellow green colour viz., BSRO-1229, BSRO-1227, OSR-1379, OSR-1372, OSR-1347, BSRO-1188, OSR-1359, OSR-1357, OSR-1352, OSR-1349, OSR-1354 and the remaining nine genotypes are blue green colour foliage viz.,OSR-1362, ASRO-1285, ASRO-1289, OSR-1364, ASRO-1207, ASRO-1291, BSRO-1253, ASRO-1201, BSRO-1246. The yellow green colour foliage genotypes were having resistance to thrips and the blue green colour foliage genotypes were susceptible to thrips.

It could be seen from the data recorded at 30 DAT, the onion genotypes were categorized under two types of foliage such as glossy foliage and non glossy foliage. The majority of genotypes viz., BSRO-1229, BSRO-1227, OSR-1379, OSR-1372, OSR-1347, BSRO-1188, OSR-1359, OSR-1357, OSR-1352, OSR-1349, OSR-1354 were having glossy foliage and the remaining OSR-1362, ASRO-1285, ASRO-1289, OSR-1364, ASRO-1207, ASRO-1291, BSRO-1253, ASRO-1201, BSRO-1246 were having non glossy foliage. The glossy foliage genotypes were having resistance to thrips and the non glossy foliage genotypes were susceptible to thrips.