Euphytica

, Volume 74, Issue 1, pp 35–39

Effect of cytoplasmic male-sterility in sorghum on host plant interaction with sorghum midge, Contarinia sorghicola

  • H. C. Sharma
  • P. Vidyasagar
  • C. V. Abraham
  • K. F. Nwanze
Article

DOI: 10.1007/BF00033764

Cite this article as:
Sharma, H.C., Vidyasagar, P., Abraham, C.V. et al. Euphytica (1993) 74: 35. doi:10.1007/BF00033764
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Summary

Sorghum midge, Contarinia sorghicola Coq. (Diptera: Cecidomyiidae) is one of the most important pests of grain sorghum worldwide. We studied the reaction of midge-resistant and midge-susceptible genic-cytoplasmic male-sterile (A-lines) and their maintainers (B-lines), and the effect of resistant and susceptible restorers on sorghum midge. Midge damage and adult emergence were significantly lower on the B-lines of midge-resistant genotypes (PM 7061 and PM 7068) than their corresponding A-lines, while the reverse was true for the midge-susceptible genotypes (296A and ICSA 42). Differences in midge damage and the number of midges emerged were not significant between the midge-resistant and midge-susceptible A-lines when infested without pollination (except midge emergence on PM 7061A). Pollination with a midge-resistant restorer (DJ6541) reduced midge emergence significantly in one of two seasons. Source of pollen did not influence midge emergence on the highly-resistant A-line, PM 7061A. The implications of these observations in the development of midge-resistant hybrids were discussed.

Key words

Sorghum midgeContarinia sorghicolacytoplasmic male sterilityhost plant resistanceresistance mechanismssorghumSorghum bicolor

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • H. C. Sharma
    • 1
  • P. Vidyasagar
    • 1
  • C. V. Abraham
    • 1
  • K. F. Nwanze
    • 1
  1. 1.International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)PatancheruIndia