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Studies on linkage relations of genes controlling disease and insect resistance and nature of endosperm in rice

Summary

Five hundred F3 lines derived from the cross TN1/IR2061-464-6 were examined for the nature of endosperm and resistance to bacterial blight, brown planthopper, and grassy stunt. TN1 has non-glutinous endosperm and is susceptible to bacterial blight, grassy stunt, and brown planthopper. IR2061-464-6 has a glutinous endosperm and is homozygous resistant to bacterial blight, grassy stunt, and brown planthopper. The F3 data fit the 1:2:1 ratio expected for monogenic control of each trait. A two-way classification for all the traits indicated that these four traits are inherited independently. Thus, it should be possible to recombine these four traits in various combinations in rice varieties.

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References

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Sujadi, S., Khush, G.S. Studies on linkage relations of genes controlling disease and insect resistance and nature of endosperm in rice. Euphytica 26, 337–342 (1977). https://doi.org/10.1007/BF00026994

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Index words

  • Oryza sativa
  • rice
  • inheritance of resistance
  • brown planthopper
  • grassy stunt
  • bacterial blight
  • glutinous endosperm
  • linkage