Antixenosis component of resistance to sorghum midge, Contarinia sorghicola Coq. in Sorghum bicolor (L.) Moench

Sharma, H C and Vidyasagar, P (1994) Antixenosis component of resistance to sorghum midge, Contarinia sorghicola Coq. in Sorghum bicolor (L.) Moench. Annals of Applied Biology, 124 (3). pp. 495-507. ISSN 1744-7348

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Abstract

Sorghum midge, Contarinia sorghicola Coq. (Diptera: Cecidomyiidae) is the most destructive pest of grain sorghum, and host-plant resistance is an effective method of controlling this insect. We studied the antixenosis component of resistance to sorghum midge using multi-, double- and no-choice cage tests, and under multi-choice field conditions to quantify and understand the nature of antixenosis component of resistance to this insect in Sorghum bicolor (L.) Moench. Midge response towards sorghum panicles was influenced by panicle size and cage type used to study the orientation behaviour. Maximum number of midges were recorded at 30 and 60 min after initiating the experiment. Antixenosis shown by C. sorghicola under multi-choice field conditions to ICSV 197 and TAM 2566 was not confirmed under cage tests, while DJ 6514, AF 28 and IS 3461 were non-preferred both under field and cage conditions. Midge-resistant female parents (PM 7061 and PM 7068) were less preferred than the midge susceptible (ICSA 42 and 296A) female parents. Male-sterility did not influence host finding and acceptance by the midge females, although in one out of two tests, the maintainer lines (B-lines) were preferred over the male-sterile lines (A-lines).

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Antixenosis plant resistance, preference, sorghum midge, Contarinia sorghicola, Sorghum bicolor
Subjects:	Mandate crops > Sorghum
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	07 Oct 2011 12:49
Last Modified:	07 Oct 2011 12:49
URI:	http://oar.icrisat.org/id/eprint/2070
Official URL:	http://dx.doi.org/10.1111/j.1744-7348.1994.tb04154...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We Thank D Krishna and Mr. V V Rao for their help in the field studies, Mr G Venkateswarlu for help in drawing the figures, and Dr D E Byth for his critical comments on the manuscript. Approved as J.A No 1478 by the International Crops Research Institute for the Semi-Arid Tropics(ICRISAT), Patancheru, Andhra Pradesh 502324, India
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