Resistance to the sorghum shoot fly, Atherigona soccata (Rond.) and selection for antibiosis

Sharma, G.C. and Rana, B.S. (1983) Resistance to the sorghum shoot fly, Atherigona soccata (Rond.) and selection for antibiosis. Journal of Entomological Research 1983 Vol. 7 No. 2 pp. 133-138 , 7 (2). pp. 133-138.

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Field-plot trials were carried out in India over 3 years to evaluate 20 resistant sorghum sources for their response to infestation by Atherigona soccata Rond. after late sowing (3rd week of July) to ensure heavy infestation, in comparison with 2 susceptible lines. The average egg population was lowest (0.07-0.13/plant) in the lines IS 5642, IS 5490, IS 5469 and IS 4664. Significantly fewer deadhearts (14.9-18.5%) were observed in the lines IS 5490, IS 4664, IS 5359, IS 5469, IS 5642 and IS 2146 than in the other lines tested. When high-yielding and resistant varieties were crossed, the F1 and F2 generations showed no deadheart formation in spite of oviposition by the pest; this character was therefore heritable. In the F2 generation of crosses of resistant varieties with resistant or susceptible ones, the percentage of such plants was 16.8 and 6.3, respectively. Such selection may provide a criterion for transferring and/or strengthening antibiosis in breeding for resistance

Item Type: Article
Author Affiliation: Division of Entomology, Indian Agricultural Research Institute, New Delhi-110012, India
Subjects: Crop Improvement > Plant Breeding
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 27 Feb 2012 10:40
Last Modified: 27 Feb 2012 10:40

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