Determination of Morphological Variability among Cabbage (Brassica oleracea var. capitata L.) Hybrids and Their Parents

Abstract

This study carried out to determine morphological traits of new experimental hybrids of
cabbage and their parents. To determine morphological variability among tested hybrids and parents,
they were analyzed for 34 morphological traits using Principal Component Analysis (PCA) and Cluster
Analysis (CA). Results of the PCA indicated that the frst three principal components accounted for
39.76% of the total variability among the 28 cabbage hybrids and 45.34% of the total variability among
22 cabbage parents for all the traits investigated. The frst principal component (PC1) were the most
important component and cabbage traits that constitute the PC1 (such as plant height, plant diameter,
weight of head, diameter of head and length of head) were in fact the characteristics considered by
breeders to be of greatest importance in cabbage breeding. At the result of CA, the cabbage hybrids
were divided into eleven clusters and the cabbage parents were divided into nine clusters. PCA and
CA confrmed that the cabbage hybrids and their parents were highly variable and had principally a
signifcant variation for yield and yield components.  

Keywords

• Breeding,cabbage,cluster analysis,morphological variation,principal component analysis

Beyaz Baş Lahana (Brassica oleracea var. capitata L.) Hibritleri ve Onların Ebeveynleri Arasındaki Morfolojik Varyabilitenin Belirlenmesi

Abstract

Bu çalışma, yeni deneysel beyaz baş lahana hibritleri ve onların ebeveynlerinin morfolojik özelliklerini
belirlemek için yürütülmüştür. İncelenen hibritler ve ebeveynler arasındaki morfolojik varyabiliteyi belirlemek
amacıyla hibritler ve ebeveynler 34 morfolojik özellik için ana bileşen analizi ve kümeleme analizi ile analiz
edilmiştir. Ana bileşen analizinin sonuçları ilk üç temel bileşenin araştırılan tüm morfolojik özellikler için 28 beyaz
baş lahana hibriti arasındaki toplam varyabilitenin %39.76’sını ve 22 beyaz baş lahana ebeveyni arasındaki toplam
varyabilitenin %45.34’ünü açıkladığını göstermiştir. İlk temel bileşen en önemli bileşen olarak bulunmuştur ve
onu oluşturan özellikler (bitki boyu, bitki eni, baş ağırlığı, baş çapı ve baş yüksekliği) aslında lahana ıslahında
ıslahçılar tarafından en büyük öneme sahip özellikler olarak düşünülmektedir. Kümeleme analizinin sonucunda
beyaz baş lahana hibritlerinin 11 grupta ve ebeveynlerin 9 grupta kümelendiği belirlenmiştir. Ana bileşen analizi ve
kümeleme analizi beyaz baş lahana hibritleri ve onların ebeveynlerinin oldukça değişkenlik gösterdiğini, verim ve
verim bileşenleri için önemli bir varyasyona sahip olduklarını doğrulamıştır.  

Keywords

• Islah,lahana,kümeleme analizi,morfolojik varyasyon,ana bileşen analizi

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