Analysis of resistance mechanism to Atherigona soccata in crosses of sorghum

• Published in: Plant breeding Vol. 128; no. 5; pp. 443 - 450
• Main Authors: Anandan, A, Huliraj, H, Veerabadhiran, P
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford, UK : Blackwell Publishing Ltd 01.10.2009; Blackwell Publishing Ltd; Blackwell
• Subjects: Agronomy. Soil science and plant productions; Atherigona soccata; Biological and medical sciences; correlation; Fundamental and applied biological sciences. Psychology; GCA; gene action; Genetics and breeding of economic plants; path analysis; resistance; SCA; shoot fly; Sorghum; Sorghum bicolor; Varietal selection. Specialized plant breeding, plant breeding aims; Atherigona soccata; Path analysis; Monocotyledones; Muscidae; GCA; Insecta; Gene expression; Genetic determinism; Cereal crop; Resistance; SCA; Sorghum bicolor; Pest; gene action; correlation; Gramineae; Arthropoda; Angiospermae; Genetic improvement; Spermatophyta; shoot fly; Invertebrata; Diptera
• ISSN: 0179-9541; 1439-0523
• DOI: 10.1111/j.1439-0523.2008.01605.x

In sorghum, shoot fly resistance is important for grain yield and fodder value. An experiment was conducted to estimate genetic parameters of sorghum for resistance to shoot fly in 50 hybrids, by crossing 5 x 10 genotypes in line x tester manner. Plant height, number of leaves per plant, number of eggs per plant, trichomes on upper and lower surface per unit area of lamina and dead heart per cent were measured on 14 and 21 days after emergence (DAE) and glossiness of leaves was graded on 14 DAE. The correlation between midparent and hybrid performance, GCA : SCA ratio revealed predominance of non-additive gene effects for the traits studied, which could be exploited through hybrid breeding. Of the parents, SPSFPR 94004A and IS 4777 were the best general combiners for shoot fly resistance. Correlation and path analysis revealed the importance of resistance traits and phenol estimation confirms the resistances against shoot fly.