eprintid: 2099
rev_number: 7
eprint_status: archive
userid: 30
dir: disk0/00/00/20/99
datestamp: 2011-10-08 12:46:59
lastmod: 2011-10-08 12:46:59
status_changed: 2011-10-08 12:46:59
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
item_issues_count: 0
creators_name: Sharma, H C
creators_name: Franzmann, B A
icrisatcreators_name: Sharma, H C
icrisatcreators_name: Franzmann, B A
affiliation: ICRISAT(Patancheru)
country: India
title: Host-plant preference and oviposition responses of the sorghum midge, Stenodiplosis sorghicola (Coquillett) (Dipt., Cecidomyiidae) towards wild relatives of sorghum
ispublished: pub
subjects: s1.4
full_text_status: restricted
note: Approved as JA 2044 by International Crops Research
Institute for the Semi-Arid Tropics (ICRISAT)
abstract: Sorghum midge, Stenodiplosis (Contarinia) sorghicola (Coquillett) is an important pest of grain sorghum world-wide. Considerable progress has been made in screening and breeding for resistance to sorghum midge. However, some of the sources of resistance have become susceptible to sorghum midge in Kenya, in eastern Africa. Therefore, the wild relatives of Sorghum bicolor were studied as a possible source of new genes conferring resistance to sorghum midge. Midge females did not lay eggs in the spikelets of Sorghum amplum, Sorghum bulbosum, and Sorghum angustum compared to 30% spikelets with eggs in Sorghum halepense when infested with five midge females per panicle under no-choice conditions. However, one egg was laid in S. amplum when infested with 50 midges per panicle. A larger number of midges were attracted to the odours from the panicles of S. halepense than to the panicles of Sorghum stipoideum, Sorghum brachypodum, S.angustum, Sorghum macrospermum, Sorghum nitidium, Sorghum laxiflorum, and S. amplum in dual-choice olfactometer tests. The differences in midge response to the odours from S. halepense and Sorghum intrans were not significant. Under multi-choice conditions, when the females were also allowed a contact with the host, more sorghum midge females were attracted to the panicles of S. bicolor compared with S. amplum, S. angustum, and S. halepense. In another test, numerically more midges responded to the panicles of IS 10712 compared with S. halepense, whereas the differences in midge response to the panicles of ICSV 197 (S. bicolor) and S. halepense were not apparent, indicating that S. halepense is as attractive to sorghum midge females as S. bicolor. The wild relatives of sorghum (except S. halepense) were not preferred for oviposition, and they were also less attractive to the sorghum midge females. Thus, wild relatives of sorghum can prove to be an alternative source of genes for resistance to sorghum midge.
date: 2001
date_type: published
publication: Journal of Applied Entomology
volume: 125
number: 3
publisher: Blackwell Publishing
pagerange: 109-114
refereed: TRUE
issn: 0931-2048
official_url: http://dx.doi.org/10.1046/j.1439-0418.2001.00524.x
related_url_url: http://scholar.google.co.in/scholar?hl=en&q=allintitle%3A+%22Host-plant+preference+and+oviposition+responses+of+the+sorghum+midge%2C+Stenodiplosis+sorghicola+(Coquillett)+(Dipt.%2C+Cecidomyiidae)+towards+wild+relatives+of+sorghum%22&btnG=Search&as_sdt=0%2
related_url_type: author
citation:   Sharma, H C and Franzmann, B A  (2001) Host-plant preference and oviposition responses of the sorghum midge, Stenodiplosis sorghicola (Coquillett) (Dipt., Cecidomyiidae) towards wild relatives of sorghum.  Journal of Applied Entomology, 125 (3).  pp. 109-114.  ISSN 0931-2048     
document_url: http://oar.icrisat.org/2099/1/Host-plant_preference_and_oviposition_responses_of_the_sorghum_midge%2C_Stenodiplosis_sorghicola_%28Coquillett%29_%28Dipt.%2C_Cecidomyiidae%29_towards_wild_relatives_of_sorghum.pdf