Abstract:
【Objective】 This research aims to screen out high-quality and high-yield aromatic rice varieties, which are suitable for rice planting in Xinjiang region.
【Methods】 The yield, component factors and quality indexes of the 11 aromatic rice varieties were measured, and the differences of yield and quality traits of different aromatic rice varieties were comprehensively evaluated by correlation, principal component analysis and cluster analysis.
【Results】 There were differences in yield and quality traits among the 11 aromatic rice varieties, with the variation coefficients ranging from 2.70% to 69.19%, and the variation was mainly reflected in kernels per panicle, chalky degree and chalky rate. The 1,000-grain weight was positively correlated with grain growth, and the yield was positively correlated with chalky rate and gel consistency. Principal component analysis showed that Xinjingyi 20 had the highest comprehensive score of 2.565,9, and Xinjingxiang 53 had the lowest comprehensive score of-2.022,6. Cluster analysis showed that when the European-style distance was 10, aromatic rice varieties were divided into three classes, aromatic rice varieties accounted for 63.64% in the class I; aromatic rice varieties accounted for 27.27% in the class II; in the class III, the aromatic rice variety was Xinjingyi 20, which accounted for 9.09%. The quality and yield of aromatic rice varieties in the class III were the best, which was the worst in the class II. Comprehensive analysis showed that Xinjingyi 20 had the best quality and high yield.
【Conclusion】 Xinjingyi 20 has the best quality and high yield. In addition, increasing kernels per panicle and reducing chalky rate might be the key research direction for improving yield and quality of aromatic rice varieties in Xinjiang.