Screening the genotypes of sorghum (Sorghum bicolor (L.) Moench) BC1 F3 generation of the cross CO (S) 28 x IS18551 for shoot fly (Atherigona soccata (Rond.) resistance

M.L. Abinaya, N. Kumaravadivel, S. Varanavasiappan, D. Kavithamani
2019 Electronic Journal of Plant Breeding  
Screening of sorghum genotypes of BC 1 F 3 generation of the cross CO (S) 28 x IS18551 for shoot fly [Atherigona soccata (Rondani)] resistance was carried out during kharif 2018-19. The segregating population was subjected to Foreground selection using SSR markers flanking QTLs imparting shoot fly resistance which is in the linkage group SBI-05 and SBI-10. From the 100 plants, 29 plants with 4 QTLs, 35 plants with 3 QTLs, 24 plants with 2 QTLs and 9 plants with 1 QTL have been identified. Shoot
more » ... n identified. Shoot fly component traits and phenotypic observations were recorded for the same 100 plants. Shoot fly infestation was found to be very less in the sorghum lines harboring 4 QTLs. Based on the genotypic data, 10 lines were selected and forwarded to next generation to study the agronomic performance. Grain yield per plant was comparatively higher in BC 1 F 4 generation because of reduced infestation of shoot fly.
doi:10.5958/0975-928x.2019.00144.3 fatcat:kaqntdgddzbglnkgs5scjmtnsu