Identification of Diverse Sources of Resistance to Shoot Fly (Atherigona soccata) in sorghum, Sorghum bicolor
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 6, Issue 5
Abstract
Sorghum shoot fly, Atherigona soccata is a major constraint in sorghum production, and host plant resistance is one of the components of managing shoot fly damage in sorghum. Therefore, we evaluated 102 sorghum lines for shoot fly resistance, and to understand the underlying mechanisms of resistance. Data were recorded on shoot fly damage and morphological traits across three seasons. Thirty-one sorghum genotypes exhibited resistance to shoot fly (37.0% plants with deadhearts as compared to 92.7% in the susceptible check, Swarna), of which 25 genotypes showed non-preference for oviposition and antibiosis against A. soccata. Genotypes x environment interactions were significant, which had a consi- -derable bearing on expression of resistance to A. soccata. Similarity matrix analyses placed the shoot fly-resistant genotypes into different groups, which can be utilized to enhance the levels and broaden the basise of resistance to A. soccata. Leaf glossiness, seedling vigor, leaf sheath pigmenta- -tion and trichome density were associated with expression of resistance/susceptibility to A. soccata, and these traits can be used to select shoot fly resistant sorghums.
Authors and Affiliations
Satyanarayana. Taddi, et al.
Keywords
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