Mechanisms and diversity of resistance to sorghum shoot fly, Atherigona soccata

Riyazaddin, M and Kavi Kishor, P B and Ashok Kumar, A and Reddy, B V S and Munghate, R and Sharma, H C (2015) Mechanisms and diversity of resistance to sorghum shoot fly, Atherigona soccata. Plant Breeding. ISSN (ISSN: 0179-9541, ESSN: 1439-0523)

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Abstract

Sorghum shoot fly, Atherigona soccata, is one of the important pests of postrainy season sorghums. Of the 90 sorghum genotypes evaluated for resistance to this pest, RHRB 12, ICSV 713, 25026, 93046 and 25027, IS 33844-5, Giddi Maldandi and RVRT 3 exhibited resistance in postrainy season, while ICSB 463, Phule Anuradha, RHRB 19, Parbhani Moti, ICSV 705, PS 35805, IS 5480, 5622, 17726, 18368 and 34722, RVRT 1, ICSR 93031 and Dagidi Solapur showed resistance in rainy season, suggesting season-specific expression of resistance to A. soccata. ICSB 461, ICSB 463, Phule Yasodha, M 35-1, ICSV 700, 711, 25010, 25019 and 93089, IS 18662, Phule Vasudha, IS 18551 and 33844-5 and Barsizoot had fewer deadhearts than plants with eggs across seasons, suggesting antibiosis as one of the resistance mechanism. Five genotypes exhibited resistance with high grain yield across seasons. Correlation, path and stepwise regression analyses indicated that leaf glossiness, seedling vigour, trichome density, oviposition and leaf sheath pigmentation were associated with the expression of resistance/susceptibility to shoot fly, and these can be used as marker traits to select and develop shoot fly-resistant sorghums.

Item Type: Article
Divisions: RP-Dryland Cereals
CRPS: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Sorghum bicolor; Postrainy; Deadheart; Resistance;Antibiosis; Atherigona Soccata
Subjects: Mandate crops > Sorghum
Depositing User: Mr Ramesh K
Date Deposited: 03 Jul 2015 05:50
Last Modified: 28 Oct 2015 09:02
URI: http://oar.icrisat.org/id/eprint/8830
Official URL: http://dx.doi.org/10.1111/pbr.12276
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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