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Development of Helicoverpa armigera on different hybrids of sunflower (Helianthus annuus)

Indian Agricultural Research Journals

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Title Development of Helicoverpa armigera on different hybrids of sunflower (Helianthus annuus)
 
Creator SHARMA, MONIKA
SINGH, GURDIP
 
Subject Helicoverpa armigera, Sunflower, hybrids, Comparative development, Major pest
 
Description An experiment was conducted during 1999-2000 to study the development of Helicoverpa armigera (Hubner) on hybrids of sunflower (Helianthus annuus L.) at Ludhiana. Incubation period varied from 2.67 ± 0.33 days on 'Jwalamukhi' to 3.50 ± 0.35 days on 'PSFH 67'. Less number of eggs hatched (87.34%), on 'PSFH'. The mean pupal survival was significantly higher on 'Jwalamukhi', (87.82%) and 'MSF 8' (82.64%) than on 'SH 3322' (78.20%) and 'PSFH 67' (72.72%). The mean pupal weight was maximum (282.75 ± 10.00 mg) on 'Jwalamukhi' and minimum (260.62 ± 7.16 mg) on 'PSFH 67'. There were significant differences in female pupal length on all the 4 hybrids during March 1999. There were no significant differences in pre-oviposition, oviposition and post-oviposition period on 4 hybrids. Pre-oviposition period varied from 2.0 ± 0.41 to 3.5 ± 0.29 days. Oviposition period was maximum (3.75 ± 0.26 days) on 'PSFH 67' and minimum on 'MSFH 8' (3.0 day) and 'SH 3322' (3.0 ± 0.58 days). Sex ratio was in the favour of males o)l'PSFH 67'. The number of eggs/laid female varied from 386.50 ± 104.47 to 749.00 ± 143.2, being maximum on 'Jwa1amukhi' and minimum on 'PSFH 67'. The insect took less number of days (32.47 ± 1.81 days) to complete its development on 'Jwalamukhi' and more number of days (35.71 ± 2.26 days) on 'PSFH 67'.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2014-04-29
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40202
 
Source The Indian Journal of Agricultural Sciences; Vol 71, No 8 (2001)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40202/18063
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences