Vegetos
(An International Journal of Plant Research & Biotechnology)
Screening of Maize Genotypes for Resistance to Damage caused by Stem borer Chilo partellus (Swinhoe) under Temperate conditions
Rasool Irham*, Wani Abdul Rouf, Nisar Meinaz, Nehru R.K., Dar Zahoor
Research Articles | Published: 22 August, 2017
First Page: 154
Last Page: 161
Views: 2860
Keywords: <I>Chilo partellus</I>, screening, Leaf Damage Score, dead heart, stem tunnel length.
Abstract
Twenty four maize genotypes were screened against maize stem borer (C. partellus) during kharif season 2014 under artificial infestation in field conditions and entire screening was based on Leaf Damage Score (LDS), dead heart formation and tunnel length. Based on LDS scale (0–9), CM- 133 and CM-123 were found to be highly resistant with Leaf Damage Score of 0.93 and 0.86, respectively, whereas, KDM-895A, KDM-381A, KDM- 362B and KDM-402 were found resistant exhibiting a range of 1.73–1.86 LDS, respectively. KDM-340A, KDM-361 and KDM- 935A were highly susceptible with a range of 7.93–8.13 LDS and Basi-local was observed extremely susceptible with 8.86 LDS. Dead heart percentage was recorded 60 in KDM-340A, KDM-361 and KDM-935A whereas, 80 per cent dead heart was recorded in Basi-local. Zero per cent dead heart was recorded in CM-133, CM-123, KDM-895A, KDM-381A, KDM-362B and KDM-402. Highest stem tunnel length was observed in Basi-local (12.02 cm) whereas zero tunnel length was recorded in CM-133, CM-123, KDM-895A, KDM-381A and KDM-362B These maize genotypes could be utilized as sources of resistance against C. partellus
References
Author Information
Department of Entomology, Sher-e-kashmir University of Agricultural Sciences and Technology, 190025, Shalimar, Srinagar (Kashmir)
*Corresponding author: Irham Rasool, Department of Entomology, Sher-e-kashmir University of Agricultural Sciences and Technology, 190025, Shalimar, Srinagar (Kashmir) E-mail: irhamrasool@gmail.com