Host plant resistance to stalk-borer, Chilo partellus Swin., in sorghum

Singh, B.U. and Rana, B.S. and Reddy, B.B. and Rao, N G P (1983) Host plant resistance to stalk-borer, Chilo partellus Swin., in sorghum. Insect Science and its Application, 4 (4). pp. 407-413.

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Abstract

Seventy cultivars of sorghum representing recently released varieties, hybrids, experimental varieties, lines bred for stalk-borer resistance and local resistant stocks were tested for resistance to Chilo partellus (Swinh.) under artificial infestation during the monsoon (July-October) season in Andhra Pradesh, India. There were significant differences among varieties for leaf-feeding injury, percentage 'deadhearts', number of holes and tunnels and percentage tunnelling. Released hybrids and local varieties were susceptible for different parameters. Thirteen varieties were as good as resistant varieties for the percentage tunnelling per plant. Long-peduncle varieties were relatively susceptible. Leaf-feeding injury, percentage 'deadhearts' and tunnelling parameters were not significantly correlated and independent of each other, and none of them could be related to grain yield. The number of holes, number of tunnels and percentage tunnelling were positively correlated. Thus, the number of holes per internode may be a good indicator of percentage tunnelling and can conveniently be used as a criterion for evaluating resistance. The varieties CSV-8R, SPV-35, SPV-103, SPV-140 and SPV-192 were identified as promising sources of resistance

Item Type:	Article
Author Affiliation:	All India Coordinated Sorghum Improvement Project, IARI-Regional Station, Rajendranagar, Hyderabad 500 030, Andhra Pradesh, India
Subjects:	Plant Protection > Pests
Divisions:	Sorghum
Depositing User:	Ms K Syamalamba
Date Deposited:	29 Feb 2012 05:29
Last Modified:	29 Feb 2012 05:29
URI:	http://eprints.icrisat.ac.in/id/eprint/3320

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