Vol. 1, Issue 2 (2016)
Screening of maize hybrids against insect pests with reference to plant physical characters
Author(s): Imran Nadeem, Muhammad Faheem Akhtar, Tariq Niaz, Riaz Ahmed, Ali Raza, Muhammad Jawwad Yousaf
Abstract: Eight maize hybrid/advanced lines i.e. FH-793, FH-810, FH-940, FH-963, FH-985, FH-1036, FH-1046 and NK-8711 were screened against insect pests during 2013 and 2014 at Maize section, AARI, Faisalabad. During 2013 minimum stem borer infestation (2.20%) was recorded on FH-810 while maximum (8.93%) on NK-8711 followed by FH-793 (8.40%), FH-940 (7.30%) and FH-985 (7.07%). Minimum shootfly infestation was recorded in FH-810 (7.31%) while maximum (16.27%) on FH-963. During 2014 minimum stem borer damage (0.89%) was recorded on FH-1046 while maximum (8.37%) on NK-8711.The minimum (7.98%) shootfly damage percentage recorded on genotype FH-810. Maximum (15.40%) shootfly damage percentage recorded on genotype FH-793 followed by FH-963 (14.26%) and FH-1046 (14.18%). During both year of study, Stem borer damage were found negatively correlated with leaf length, leaf width, plant height, number of nodes, leaf trichomes and stem diameter. In the case of shootfly infestation negative correlation was observed with leaf length and leaf trichomes while positive with leaf width, stem diameter and plant height.