Abstract
The behaviour of shootfly resistance is examined over the F1, F2, F3 and advanced generations. The F1 is almost intermediate between two parents with an added heterotic advantage of a lower ’dead-heart’ percentage. Resistance shows partial dominance under low to moderate shootfly infestation but this relationship may shift under heavy infestation conditions.
The resistance is polygenic in nature and governed by additive genes. In the absence of host immunity, gradual accumulation of favourable genes is possible by line breeding from R × I and I × I crosses by selecting 1 SD below the population mean. Selection for multiple characters limits the genetic advance for shootfly resistance—resulting in 0- 5% selection intensity and relatively less resistant but high yielding desirable progenies. Multilocation tests enable the selection of varieties stable for shootfly resistance.
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Balakotaiah K., Rana B. S., Tripathi D. P. and Rao N. G. P. (1975) Genetic analysis of some exotic and Indian crosses in sorghum X. Inheritance of resistance to sorghum shootfly. Indian J. Genet. 35, 344–349.
Blum A. (1968) Anatomical phenomena in seedlings of sorghum varieties resistant to the sorghum shootfly (Atherigona varia soccata). Crop Sci. 8, 388–391.
Jotwani M. G., Sharma G. C, Srivastava B. G. and Marwaha K. K. (1971) Ovipositional response of shootfly, Atherigona varia soccata (Rondani) on some of the promising resistant lines of sorghum. In Investigations on Insect Pests of Sorghum and Millets (Ed. by Pradhan S.), pp. 119–122. Division of Entomology, Final Technical Report (1965-1970), New Delhi.
Ponnaiya B. W. X. (1951) Studies in the genus Sorghum II. The cause of resistance to the insect pest, Atherigona indica M. Madras Univ. J. 21, 203–217.
Rana B. S., Tripathi D. P., Balakotaiah K., Damodar R. and Rao N. G. P. (1975) Genetic analysis of some exotic x Indian crosses in sorghum XI. Selection for shootfly resistance. Indian J. Genet. 35, 350–355.
Rao N. G. P., Rana B. S., Balakotaiah K., Tripathi D. P. and Fayed M. F. S. (1974) Genetic analysis of some exotic x Indian crosses in sorghum VIII. Fl analysis of ovipositional non-preference underlying resistance to sorghum shootfly. Indian. J. Genet. 34, 122–127.
Rao N. G. P., Rana B. S. and Jotwani M. G. (1978) Host plant resistance to major insect pests of sorghum. In Plant Breeding for Resistance to Insect Pests: Considerations about the Use of Induced Mutations, pp. 63–78. IAEA-215, Vienna.
Sharma G. C, Jotwani M. G., Rana B. S. and Rao N. G. P. (1977) Resistance to the sorghum shootfly, Atherigona soccata (Rondani) and its genetic analysis. J. ent. Res. 1, 1–12.
Singh S. P., Jotwani M. G., Rana B. S. and Rao N. G. P. (1978) Stability of host plant resistance to sorghum shootfly, Atherigona soccata (Rondani). Indian J. Ent. 40, 376–383.
Soto P. E. (1972) Mass rearing of the sorghum shootfly and screening for host plant resistance under greenhouse conditions. In Control of Sorghum Shootfly (Ed. by Jotwani M. G. and Young W. R.), pp. 137–146. Oxford & IBH, New Delhi.
Soto P. E. (1974) Ovipositional preference and antibiosis in relation to resistance to a sorghum shootfly. J. econ. Ent. 6, 265–267.
Young W. R. (1972) Sources of resistance to sorghum shootfly, Atherigona varia soccata Rond. In Control of Sorghum Shootfly (Ed. by Jotwani M. G. and Young W. R.), pp. 168–179. Oxford & IBH, New Delhi.
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Formerly with FAO Kenya Sorghum and Millet Improvement Project, P.O. Box 278, Busia, Kenya.
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Rana, B.S., Jotwani, M.G. & Rao, N.G.P. Inheritance of Host Plant Resistance to the Sorghum Shootfly. Int J Trop Insect Sci 2, 105–109 (1981). https://doi.org/10.1017/S1742758400002253
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DOI: https://doi.org/10.1017/S1742758400002253