Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-15T07:30:50.508Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on the mechanism of resistance in sorghum accessions to the grain midge, Contarinia sorghicola Coquillet

Published online by Cambridge University Press:  19 September 2011

K. Natarajan  and
S. Chelliah
K. Natarajan
Affiliation:
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641003, India
S. Chelliah
Affiliation:
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641003, India
Get access

Abstract

Sixty-four sorghum accessions were screened for resistance to the grain midge, Contarinia sorghicola Coq., under natural infestation conditions at Tamil Nadu Agricultural University, Coimbatore during 1982. Absolute resistance was not found in any of them. Low grain damage was recorded in PVK 50 (6.61%), PVK 55 (11.58%), AF 28 (17.03%) and DJ 6514 (17.05%) while the susceptible accession, SPV 234 recorded high grain damage (92.72%) in the screening trial. The ovipositional preference studies at insectary revealed significantly reduced grain damage in the resistant accessions. Among them, the lowest damage (8.33%) was recorded in PVK 50 followed by AF 28, DJ 6514 and PVK 55 while the susceptible accession, SPV 234 recorded 21.57% grain damage. In the choice experiments, SPV 234 had 11.22–35.36% more infestation than in the resistant accessions evaluated along with it. Studies on development and biology of the midge revealed that antibiosis is one of the mechanisms of resistance in the lines, PVK 50, DJ 6514, AF 28 and PVK 55.

Résumé

Soixante-quatre accessions du sorgho ont é té examiné pour la résistance contre le ‘grain midge,’ Contarinia sorghicola Coq. à l'Université Agricole du Pays Tamoul, Coimbatore pendant 1982. Résistance absolu n'a pas été trouvé dans n'importe quoi. Le dommage du grain a été peu à PVK 50 (6,61%), PVK 55 (11,58%), AF 28 (17,03%) et DJ 6514 (17,05%) tandis que l'accession susceptible, SPV 234, a enregistré dommage du grain en haut (92,72%). Les études sur la préférence ovipositionale a montré dommage du grain diminué significativement aux accessions résistantes. Entre elles, le plus bas de dommage (8,33%) a enregistré par PVK 50, suivi par AF 28, DJ 6514 et PVK 55 tandis que l'accession susceptible, SPV 234, a enregistré 21,57% de dommage du grain. Dans l'essai sur le choix, le pourcentage d'infection élevé à côté d'elle. La plus haute pourcentage de la difference (35,36) a enregistré quand SPV 234 a été évalué avec PVK 50 suivi par DJ 6514, AF 28 et PVK 55. Les études sur l'antibiosis ont montré que le poids des larves et des adultes sont diminués, le nombre d'emergence des adultes est diminué, et que la période du cycle de la vie du midge est étendue dans les accessions résistantes en comparaison avec les accessions susceptibles.

Keywords

Screeningmechanisms of resistancepolyester film cagechoice testadult emergencegrain damagebiologyantibiosisnon-preferenceExaminationmécanisme de la résistancepréférence ovipositionalecage du film polyesteressai du choixl'emergence d'adultedommage du grainbiologieantibiosisnon-préférence
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 6 , December 1986 , pp. 751 - 755
Copyright
Copyright © ICIPE 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Harris, K. M. (1961) The sorghum midge Contarinia sorghicola (Coq.) in Nigeria. Bull. ent. Res. 52, 129–146.Google Scholar
Johnson, J. W., Phillips, J. M. and Teetes, G. L. (1977) Seed growth rate of selected midge resistant and susceptible sorghums. Sorghum Newsletter 20, 115.Google Scholar
Johnson, J. W., Teetes, G. L., Wuensche, A. L. and Rosenow, D. T. (1979) Sorghum cultivars resistant to the sorghum midge. Sorghum Newsletter 22, 87.Google Scholar
Kulkarni, K. A. and Jotwani, M. G. (1976) Chemical control of earhead midge Contarinia sorghicola (Coquillet) (Diptera, Cecidomyiidae). J. Karnatak Univ. 21, 281–285.Google Scholar
Kulkarni, K. A., Parameshwarappa, R. and Kajjari, N. B. (1978) Screening of sorghum entries to midge (Contarinia sorghicola Coquillet). Mysore J. agric. Sci. 12, 577–578.Google Scholar
Merwine, N. C., Gourley, L. M. and Blackwell, K. H. (1981) Inheritance of papery glume and cleistogamy in sorghum. Crop Sci. 21, 953–956.Google Scholar
Rossetto, C. J. (1977) Types of resistance of sorghum to Contarinia sorghicola. Sorghum Newsletter 20, 5.Google Scholar
Rossetto, C. J., Banzatto, N. V., Lara, J. F. M. and Overman, J. L. (1975) AF-28, a Sorghum bicolor variety resistant to sorghum midge, Contarinia sorghicola. Sorghum Newsletter 18, 5.Google Scholar
Sadakathulla, S., Mani, M. and Venugopal, M. S. (1978) Evaluation of efficacy of different spray and dust formulations in the control of the grain midge. Sorghum Newsletter 21, 69–70.Google Scholar
Thimmaiah, G., Panchabhavi, K. S. and Kulkarni, K. A. (1974) Chemical control of sorghum midge Contarinia sorghicola Coquillet. Curr. Res. 3, 82–83.Google Scholar
Venugopal, M. S., Mani, M. and Balasubramanian, M. (1977a) Efficacy of certain new insecticides for the control of sorghum grain midge Contarinia sorghicola Coq. Pesticides 11, 28–29.Google Scholar
Venugopal, M. S., Mani, M. and Jayaraj, S. (1977b) Relative efficacy of some insectides in the control of sorghum midge, Contarinia sorghicola Coq. Indian J. Pl. Prot. 5, 205–207.Google Scholar