Factor Analysis of Yield in Spring Wheat (Triticum aestivum L.)¹

Abstract

Fourteen characters were studied in a 5 by 5 diallel cross among varieties of spring wheat (Triticum aestivum L.). The characters consisted of yield components, certain morphological structures above the flag leaf nodes, and three developmental stages. Factor analysis was used to analyze the relationship between these characters. This analysis indicated that the factor concerned with flag leaf area and duration was the most important. Characters that determined the nature of the “sink” were divided among three factors. The components of yield formed part of Factors 3 and 4. Factor analysis clarified the relationship between correlated characters in the dependence structure.

Evaluation of genetic diversity and traits relations in wheat cultivars under drought stress using advanced statistical methods

“…Different statistical techniques have been used in modeling crops yield, including correlation, regression, path analysis, factor analysis, factor components and cluster analysis (Mohamed, 1999). Factor analysis suggested by Walton (1972) has been widely used to identify growth and plant characters related to wheat (Moghaddam et al, 1998;Naghavi et al, 2015). This method basically reduces a large number of correlated variables to a small number of uncorrelated variables or factors.…”

THE GENETICS OF STOMATAL LENGTH AND FREQUENCY IN CLONES OF BROMUS INERMIS AND THE RELATIONSHIPS BETWEEN THESE TRAITS AND YIELD

“…The relationships between the stomatal characters studied and certain agronomic characters were examined by using factor analysis and stepwise multiple regression analysis in the way set out by Walton (1971Walton ( , 1972. The way that the agronomic data were collected and recorded has been reported by Walton (1974).…”

Van Ekolojik Koşullarında Bazı Ekmeklik Buğday (Triticum aestivum L.) Çeşitlerinin Verim ve Verim Öğeleri Üzerine Bir Araştırma

“…Ara ştı rmada kullan ı lan çe şitlerin metrekarede fertil ba şak say ı lar ı ndaki değ i ş imin tane verimlerindeki de ğ iş ime paralel olmas ı dikkat çekicidir. Bu durum metrekaredeki fertil ba şak say ı s ı n ı n öncelikli verim bile şeni olmas ı ndan ve verimle bu özellik aras ı ndaki s ı k ı ili ş kiden kaynaklanmaktad ı r (Walton 1971, Darwinkel 1978. Erekul ve Köhn (2006)' de k ış l ı k buğ dayda tane veriminin büyük ölçüde birim alandaki fertil ba şak say ı s ı yla belirlendi ğ ini belirtmi şlerdir.…”