Field screening of maize inbred lines for resistance to stem borers Chilo partellus (Swinhoe) and Sesamia inferens Walker

• Main Author: Lakshmi Soujanya, P, Sekhar, J.C, Chikkappa Karjagi, Suby, S.B, N. Sunil, K.R.Yathish, M.L.K.Reddy, Jawala Jindal and Rakshit, S.
• Format: Report
• Language: English
• Published: Maize Technologists Association of India 2019
• Subjects: Artificial infestation · Chilo partellus · Maize germplasm · Resistance · Screening · Sesamia inferens; DML
• Online Access: http://krishi.icar.gov.in/jspui/handle/123456789/30207

Not Available The present study aimed at identification of new inbred lines with resistance to maize stem borers. A set of 76 inbred lines were screened against Chilo partellus and 56 against Sesamia inferens during kharif 2017 and rabi 2017-18, respectively under artificial infestation conditions and evaluated based on the leaf injury rating (LIR)on 1-9 scale. LIR in the test lines due to C. partellus ranged from 2.7 to 9.0 and for S. inferens foliar damage ranged from 2.1 to 9.0. Among the lines screened, one line DMRE63/ CML 287-2-46-9 was found to be resistant to C. partellus with LIR 2.7 whereas eight lines, viz., BGS-86 (2.17), CM111/Zea diploperennis/CM111 (2.8), CML141 (2.4), CML33#-4 (2.4), DML-1432 (3.0), EC619101 (2.5), HEY Pool-2011-30-4-1-2-2-1 (2.2) and HEY Pool-2011-41-2- 1-1-1-1 (2.3) were found resistant to S. inferens. These lines can be used in future studies to develop stem borer resistant cultivars.