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Published in Crop Sci 10:528-531 (1970)
© 1970 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Breeding for Resistance to the Sorghum Shoot Fly1

H Doggett, K. J. Starks and S. A. Eberhart2

Screening sorghum (Sorghum bicolor (L.) Moench) varieties for seedling resistance to the sorghum shoot fly (Atherigona varia, Meigen) gave inconsistent results, and "recovery resistance" (tolerance) proved a better character. When levels of pest attack were high, infestation levels exceeded 90%, indicating that there was little worthwhile seedling resistance in the sorghums being tested. In contrast, good recovery resistance was shown by the cultivars ‘Serena’ and ‘Namatare,’ and more than 70% of the infested plants recovered and yielded normally. Recovery resistance was associated with good yield from tillers, and heritability was fairly high. ‘Namatare’ proved a successful parent, and grain sorghums with a combination of good shoot fly recovery resistance and yield were developed from crosses between Namatare and susceptible sorghums.

Key Words: Sorghum shoot fly • Recovery resistance

1 Contribution from the East African Agriculture and Forestry Research Organization, East African Community with the Agricultural Research Council, British Overseas Development Ministry, U. S. Agency for International Development, and Entomology Research Division and Crops Research Division, U. S. Department of Agriculture cooperating.

2 Sorghum Breeder, Serere Research Station, Uganda; Research Entomologist, U. S. Department of Agriculture (presently Stillwater, Oklahoma 74074); and Research Geneticist, U. S. Department of Agriculture (presently Ames, Iowa 50010), respectively.

Received for publication February 26, 1970.




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