Physico-chemical mechanisms of resistance to shoot fly, Atherigona soccata in sorghum, Sorghum bicolor

Chamarthi, S K and Sharma, H C and Sahrawat, K L and Narasu, L M and Dhillon, M K (2011) Physico-chemical mechanisms of resistance to shoot fly, Atherigona soccata in sorghum, Sorghum bicolor. Journal Of Applied Entomology.

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Abstract

Sorghum shoot fly, Atherigona soccata is an important pest of sorghum, and host plant resistance is one of the important components for minimizing the losses due to this pest. Therefore, we evaluated a diverse array of sorghum genotypes to identify physico-chemical characteristics conferring resistance to A. soccata. Susceptibility to shoot fly was associated with high amounts of soluble sugars, fats, leaf surface wetness and seedling vigour; while leaf glossiness, plumule and leaf sheath pigmentation, trichome density and high tannin, Mg and Zn showed resistance to shoot fly. Stepwise regression indicated that Mg, Zn, soluble sugars, tannins, fats, leaf glossiness, leaf sheath and plumule pigmentation and trichome density explained 99.8% of the variation in shoot fly damage. Path coefficient analysis suggested that leaf glossiness, trichome density, Mg and fat content and plant plumule pigmentation can be used as markers traits to select for shoot fly resistance in sorghum

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Agro Tags: <b>Agrotags</b> - sorghum | genotypes | planting | social groups | crops | mechanization | defence mechanisms | pests | pigments | organic acids <br><b>Fishtags</b> - drying <br><b>Geopoliticaltags</b> - texas | india | usa | chiloe | maharashtra | marches | africa | asia
Subjects: Mandate crops > Sorghum
Depositing User: Siva Shankar
Date Deposited: 07 Jul 2011 04:53
Last Modified: 10 Sep 2011 08:33
URI: http://oar.icrisat.org/id/eprint/103
Official URL: http://dx.doi.org/10.1111/j.1439-0418.2010.01564.x
Projects: UNSPECIFIED
Funders: Suri Sehgal Foundation
Acknowledgement: Authors thank the staff of entomology for their help in conducting the experiments, and Suri Sehgal Foundation for financial support to carry out these studies. We also thank reviewers for their critical comments and valuable suggestions while reviewing this paper.
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