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Experientia

, Volume 43, Issue 3, pp 332–334 | Cite as

Extra-nuclear inheritance in a sexually produced aphid: the ability to overcome host plant resistance by biotype hybrids of the greenbug,Schizaphis graminum

  • J. Eisenbach
  • T. E. Mittler
Short Communications

Summary

Greenbugs of biotype E that grow and reproduce well on a biotype C-resistant sorghum (IS 809) were crossed with biotype C greenbugs. The resulting hybrids were tested on IS 809 to study how the ability to overcome the cultivar's resistance is inherited. Only those hybrids stemming from biotype E mothers were able to overcome the resistance of IS 809 plants, indicating that this trait is inherited by the sexually-produced fundatrices in an extra-nuclear manner from the mother. A plausible explanation for this phenomenon is presented.

Key words

Extra-nuclear inheritance aphids greenbugs Schizaphis graminum biotypes hybrids fundatrix plant resistance symbiotes 

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Copyright information

© Birkhäuser Verlag 1987

Authors and Affiliations

  • J. Eisenbach
    • 1
  • T. E. Mittler
    • 1
  1. 1.Department of EntomologyUniversity of CaliforniaBerkeleyUSA

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