Principal component analysis and comprehensive evaluation of salt and alkaline tolerance in maize hybrids
[Objective]To select the saline-alkali tolerant maize hybrid varieties suitable for cultivation in saline-alkaline soils in Ningxia Yellow River irrigated area.[Method]Based on 14 trait indicators includ-ing plant height,ear height,stem diameter,ear length,ear diameter,single ear weight and emergence rate of 30 maize hybrid combinations bred and introduced by Ningxia Academy of Agricultural and Forestry Sci-ences.Comprehensive evaluation of saline-alkaline tolerant maize hybrid combinations by cluster analysis and principal component analysis.[Result]The result of principal component analysis showed that the 14 agronomic traits were transformed into 5 principal component factors,representing 85.57%of the original data information.There are five evaluation indictors for salinity and alkali resistance.Ninghe 1822,Ninghe 1822,Ninghe 1822,Ninghe 1822 and Xianyu1225 have better salinity and alkali resistance.Meanwhile,the 30 salinity tolerant varieties were divided into three types by cluster analysis,and the results were basically consistent with the principal component analysis.[Conclusion]There are five hybrid maize with strong saline-alkaline tolerance were screened out by two analytical methods,which provided theoretical reference for the cultivation of saline-alkaline land in Pingluo,Ningxia.
NETL
NSTL
万方数据
