Science in China Series C: Life Sciences

, Volume 41, Issue 5, pp 449–458 | Cite as

Breeding technology of alloplasmic wheat

  • Yuwen Wu
  • Cuilan Zhang
  • Chunguang Liu
  • Ren Shuxin
  • Zhang Yan


Novel wheat bearing alloplasm was bred via nucleo substitution backcross. Through comparative study between the hornonucleo-heterocytoplasmic lines and homocytoplasm-heteronuclear lines, it was shown that a portion of the alloplasm types were able to produce useful genetic effects on wheat yield, grain quality, tolerance of salt and resistance to diseases. Among the species studied, the cytoplasm ofAegilops crassa, Ae. squarrosa andAe. vcntricosa contributed the best effect. Specific combination of nuclear genes and cytoplasmic genes conferred specific characteristics and degree of nucleoplasmic heterosis. The alloplasmic wheat lines with cytoplasm substituted were successfully bred with good quality and resistance to disease and harsh conditions. In particular, the new variety of nucleoplasmic hybrid havingAe. crassa cytoplasm proved the best in production test, demonstration and regional test axtd was consequently pre-approved for large-scale plantation. The probing of the genetic variations and the utilition of alloplasmic wheat was proven to be valuable for both genetic study and breeding of new varieties.


wheat cytoplasm effect nucleoplasmic interaction useful genetic variation new alloplasmic variety 


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Copyright information

© Science in China Press 1998

Authors and Affiliations

  • Yuwen Wu
    • 1
  • Cuilan Zhang
    • 1
  • Chunguang Liu
    • 1
  • Ren Shuxin
    • 1
  • Zhang Yan
    • 1
  1. 1.State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of GeneticsChinese Academy of SciencesBeijingChina

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