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Systematic analysis of variation of the phenological type in plants as exemplified by a tobacco collection

, : Systematic analysis of variation of the phenological type in plants as exemplified by a tobacco collection. Systematic analysis of variation of the phenological type in plants as exemplified by a tobacco collection (Dep. 839-V88): 16

A cluster analysis was performed on data on 21 phenological characters from 29 varieties, and principal components of the phenological type useful in establishing genetic differences were identified. The Mahalanobis statistic proved effective in evaluating the similarity of varieties for characters of this type. As a result of this study, 2 independent genetic systems controlling seasonal development were discerned: one determining vegetative and the other reproductive development periods.

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