Correlation and Regression Analysis of The Impact of Yellow Rust (Puccinia Striiformis F. Sp. Tritici) On Grain Quality Traits in Wheat Genotypes

In the present study, correlation and regression analyses were conducted to evaluate the impact of yellow rust disease on total gluten and protein content in widely cultivated wheat varieties of Uzbekistan and synthetic hexaploid wheat genotypes. The results demonstrated that the influence of yellow rust on grain quality traits was more pronounced in synthetic hexaploid lines compared to released cultivars. In released cultivars, yellow rust severity explained 38.25% of the variation in total gluten content and 16.34% of the variation in protein content. In synthetic hexaploid lines, yellow rust accounted for 20.18% of the variation in gluten content and 25.42% of the variation in protein content. However, the moderate coefficients of determination indicate that grain quality formation is governed by complex and multifactorial interactions beyond the effect of disease severity alone.

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