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Agricultural and Natural Resources Research Center
Abstract:   (17 Views)

An experiment was conducted in a randomized complete block design (RCB) with four replications in the Agricultural and Natural Resources Research Station of Miandoab, Iran, in 2014 to compare and evaluate the relationships among the qualitative and quantitative traits in the genotypes of sugar beet using multivariate statistical methods under the conditions of Rhizoctonia disease. The experimental materials were sixteen sugar beet genotypes. Analysis of variance showed significant differences among the genotypes for all traits, except root sodium content. Based on stepwise regression analysis, gross sugar yield, molasses sugar content and gross sugar content by justifying 89.99% of changes in white sugar yield were considered as the most effective traits in justification of white sugar yield. Factor analysis identified five factors by justifying 81.62% of total data variances. Finally, the three groups were set up in the cluster analysis at similarity distance of 10. The cluster II was subjected to groups a (the highest rate) for  yellowing score, uniformity score, growth score, healthy plant number, root yield, gross sugar yield, white sugar content, white sugar yield and extract percentage, and was placed in group b (the lowest rate) for root potassium content and alkalinity. Eventually, based on all the analysis, the gross sugar yield was determined as the most effective trait on the white sugar yield and the genotypes in cluster 2 were identified suitable for cultivation under the conditions of Rhizoctonia infestation.

Type of Study: Applicable | Subject: ساير

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