| Selection of ecological adaptability of winter wheat varieties (lines) in different ecological regions |
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| DOI：10.7606/j.issn.1000-7601.2021.06.01 |
| Key Words: winter wheat resistance breeding ecological region variety (line) selection the southern of Ningxia |
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| Abstract: |
| In view of the backward production conditions and special climate ecological types in the southern mountain area of Ningxia, the adaptability, high\|yield, and stress\|resistance of 16 cultivars were identified by statistical method and systematic clustering method.The dry land winter wheat varieties (lines) with good characteristics and outstanding high\|yield characters were selected, which were suitable for different ecological regions under rain\|fed conditions in the southern Ningxia. The results showed that, the yield of ‘9924’,‘Z0231-3-1’,‘Z0228-2-2’,‘Chang5385-1-2’,‘Longjian103’ and ‘Longzhong1’ increased inboth testing sites of Zhonghe (E1) in Yuanzhou District and Yuwa (E2) in Pengyang County. Of which, five of them including ‘9924’,‘Z0231-3-1’,‘Z0228-2-2’,‘Chang5385-1-2’ and‘Longjian103’, their yield increased by more than 10%. The yield of ‘Cang2007-1-1-1-1’ decreased in the two testing sites by 10.42% and 11.24%, respectively. ‘Longyu 0825’,‘Z0229-4-3’,‘Z0309-18-2’and‘Z0230-2’ increased in E1 by 10.90%、9.94%、2.52% and 5.39%, and decreased in E2 by 12.43%、18.93%、18.34%和15.98%,respectively. By cluster analysis, 16 varieties (lines) were grouped into 4 categories. Of which, 5 varieties (lines) had good or very good adaptability, 1 varieties (line) had better adaptability, and the rest showed average or poor adaptability in the two testing sites. In summary, the differences of the environmental between E1 and E2 were obvious, and the wide adaptability of varieties with simultaneous yield increase between the two points was representative. But at the same time, it should be noted that the interaction between varieties and locations was not significant. That is to say, there was a lack of genotypes with outstanding yield and special environmental adaptability in the tested materials. |
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