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Correlation studies for shootfly resistance traits in sorghum (Sorghum bicolor (L.) Moench)
oleh: Sunil Gomashe, M.B.Misal, K.N.Ganapathy and Sujay Rakshit
| Format: | Article |
|---|---|
| Diterbitkan: | Indian Society of Plant Breeders 2010-07-01 |
Deskripsi
A field experiment was conducted to study the relation of different plant characters and shoot fly resistance in sorghum. Leafglossiness showed high positive correlation with shootfly oviposition and dead hearts. The oviposition percentage on 14thand 21st days after seedling emergence exhibited significant positive correlation with dead hearts. Leaf trichome density onadaxial and abaxial leaf surfaces showed significant negative correlation with shootfly dead hearts. The leaf trichome densityrevealed higher magnitude for resistance due to non-preference for oviposition. Seedling vigour recorded weaker associationwith dead heart percentage. Genotypic correlation confirmed that the number of trichomes on both surfaces of lamina andleaf glossiness contributed resistance to shoot fly. Thus these characters can be used as selection criteria for breedingshootfly resistance genotypes.