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The Investigation of Relationships Between Some Fruit and Kernel Traits with Canonical Correlation Analysis in Ankara Region Walnuts

Bestimmung des Grads des Zusammenhangs von einigen Merkmalen inbezug auf Frucht und Kern (Walnuss) bei Walnussbäumen aus der Region um Ankara mit Hilfe der kanonischen Korrelationsanalyse

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Abstract

Canonical correlation analysis is a multivariate technique, which is employed to examine relationships between two variable sets, each of that consist of two or more variables. In the analysis, by maximizing the relationships between two sets, it is aimed to obtain new variables called as canonical variates that formed by linear combinations of the original variables for each sets. In this study, it is aimed to examine the relationships between some fruit and kernel characteristics of Ankara region walnuts. Thus, the following eight traits Fruit Length (mm), Fruit Width (mm) Fruit Height (mm) Fruit Weight (g), Shell Thickness (mm), Kernel Weight (g), Kernel Ratio (%) and Filled-firm Kernel Ratio (%) of 364 walnut samples were measured. First five of these characteristics were grouped as X variable and the rest of as Y variable. As a result, the correlation between the first canonical variable pair was found as 0.979 (p < 0.01).

Zusammenfassung

Die kanonische Korrelationsanalyse ist eine multivariate Methode, die zum Einsatz kommt, wenn der Zusammenhang zwischen zwei Sätzen von Variablen, die jeweils wieder aus zwei oder mehr Variablen bestehen, untersucht werden soll. Um eine maximale Korrelation zwischen den beiden Sätzen von Variablen zu finden, zielt die Varianzanalyse darauf ab, neue Variablen zu erhalten, die kanonische Variablen heißen. Sie werden aus Linearkombinationen der beiden ursprünglichen Sätze an Variablen ermittelt. Es ist Ziel dieser Untersuchung, den Grad des Zusammenhangs zwischen einigen Merkmalen von Frucht und Kern (Walnuss) von Walnussbäumen aus der Region um Ankara zu bestimmen. In diesem Zusammenhang wurden von 364 Walnussbäumen Proben gesammelt, von denen Frucht-Länge (mm), Frucht-Querschnitt (mm), Frucht-Größe (mm), Fruchtgewicht (g), Schalen-Dicke (mm), Nusskern-Gewicht (g) und Nusskern-Anteil (%) gemessene wurden und es wurde ermittelt, wie stark der Nusskern-Anteil die Frucht ausfüllt (%). Fünf dieser Merkmale wurden als X-Variablen, die restlichen Variablen als Y-Variablen gruppiert. Zwischen dem ersten kanonischen Variablen-Paar wurde als Ergebnis eine Korrelation von 0,979 (p < 0.01) gefunden.

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Sakar, E., Ünver, H., Keskin, S. et al. The Investigation of Relationships Between Some Fruit and Kernel Traits with Canonical Correlation Analysis in Ankara Region Walnuts. Erwerbs-Obstbau 58, 19–23 (2016). https://doi.org/10.1007/s10341-015-0250-x

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