Multivariate assessment of cultivars' biodiversity among the Polish strawberry core collection

Abstract

Sieczko L., Masny A., Pruski K., Żurawicz E., Mądry W. The diversity of parental genotypes has a major impact on the progress of plant breeding. This study assessed phenotypic biodiversity of 91 strawberry genotypes in the core collection of the Research Institute of Horticulture in Skierniewice, Poland, using multivariate statistical methods. The assessment was carried out from 2008 through 2010 for 13 traits describing plant growth vigour, flowering and fruit ripening times, fruit yield, fruit appearance and quality (position of the calyx in relation to the surface of the fruit, fruit size and firmness, skin and flesh colour, fruit glossiness, intensity of the fruit's aroma and sweetness), as well as the genotypes' capacity for repeat-fruiting during the summer-autumn period. A principal component analysis using a hierarchical cluster analysis reduced the number of dimensions of more than a dozen traits describing the diversity of the assessed cultivars and identified six homogeneous groups, each consisting of cultivars with similar traits; this will simplify mate selection in the hybridization program and may reduce the size of the core collection.

Exploration of a European-centered strawberry diversity panel provides markers and candidate genes for the control of fruit quality traits

“…In contrast to these well-studied traits, few studies have unveiled the genetic architecture of skin associated traits such as fruit glossiness 17,39 which is, alongside color, one of the most prominent traits for fruit attractivity to the consumer 40 . Remarkably, among the six associations found among the selective sweeps detected, two were found for GLOS and one for SR (Fig.…”

Assessment of variability of productivity traits and biochemical composition of apple tree varieties and forms, selection of the Orenburg branch of the federal state budgetary scientific institution federal research center of horticulture

“…The process of plant development formation, manifested by the norm of the genotype response to soil and climatic conditions, is different and varies depending on the variety. Therefore, research works on the study of the reaction rate of apple tree varieties and forms in various ecological and geographical conditions are relevant at the present time [6][7][8].…”

Genotypic assessment of productivity and quality of berries of strawberry varieties

“…The applied genetic and statistical methods for assessing varieties by a group of traits and several independent factors are traditionally based on models of analysis of variance with the calculation of several variance variances, as well as on multivariate mathematical procedures, which include the method of principal components and cluster analysis, which involves the use of not only direct empirical values of the considered characteristics, but also quantitative indicators of variation for each of the studied forms. The integrated assessment of linear combinations of the considered traits provides for the unification of the studied objects into groups, according to the similarity of genotypically determined directions of variability [13][14][15].…”