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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (1): 6-12.doi: 10.11924/j.issn.1000-6850.casb16120026

Special Issue: 小麦

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The Application of Aegilops kotschyi in Wheat Breeding

  

  • Received:2016-12-05 Revised:2017-12-10 Accepted:2017-01-20 Online:2018-01-12 Published:2018-01-12

Abstract: In order to transfer the fine properties of Aegilops kotschyi into wheat, F1 generation of hybrid (Aegilops kotschyi/CS) was crossed with common wheat and then self-crossed in this study, and 42 individuals of F4 and 42 lines of F5 were obtained respectively. Analyses revealed the following results: (i) F5 strains showed similar morphology to common wheat, the tiller number and stripe resistance and the thousand kernel weight has improved significantly in some excellent ones which could be used in wheat breeding. (ii) The chromosome numbers of seven individuals were different from common wheat in all the analyzed 12 F4 plants, and an unstable chromosome structure variation was found in one of them, which indicated cytological instability existed in some plants and more work in homozygosis and identification would be done in the future. (ⅲ) HMW-GS expressed similar with the common wheat except mutant J7-4 and the effects of quality and the mechanism of the variation needed further research. In this study, a batch of excellent materials were devised for wheat breeding.

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