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  • Author or Editor: Karl W. Hillig x
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Abstract

Morphological traits of 16 sour cherry (Prunus cerasus L.) cultivars and of hybrid and open-pollinated seedlings of germplasm collected in eastern Europe were evaluated with principal component (PC) analysis. Due to the character loadings of the first three PCs in each analysis, some of the PCs can be interpreted as representing gradations between morphologies characteristic of the two presumed progenitor species, sweet cherry (P. avium L.) and ground cherry (P. fruticosa Pall.). Genetically related cultivars and families tend to cluster, indicating that there is a significant genetic component to the underlying patterns of morphological variation. Families of cold-hardy Russian cultivars generally show a greater morphological resemblance to ground cherry than do families of less cold-hardy cultivars, suggesting that selective forces may also have contributed to the patterns of morphological variation detected.

Open Access