Seed size and shape analysis of registered common bean (Phaseolus vulgaris L.) cultivars in Turkey using digital photography

Abstract

In thisstudy, the size and shape properties of twelve different bean cultivars (elevenvarieties and a genotype) were determined using image processing on digital photography and the cultivars were groupeddepending on their properties. The highest mean values of geometric diameter, projected area, length, widthand shape factor in the study were determined in the ‘Çayırlı’ genotype. ‘Terzibaba’cultivar, more spherical shape at width orientation compared other cultivars, hadthe lowest value of thickness (4.6 mm) and more circular at the widthorientation among the cultivars. The highest mean of thickness (6.0 mm) were measuredin ‘Elkoca-05’ and ‘Noyanbey-98’ cultivars. The sphericity mean of ‘Karacaşehir-90’(70%) was found higher than those of the other cultivars, while the geometricmean diameter, projected area, length and width values had the lowest mean.’Yunus-90’and ‘Göynük-98’ cultivars had the lowest sphericity mean values of 58.9% and 58.7%,respectively. According to the results of Principal Component Analysis (PCA), themost important variables of the first component were mass, geometric meandiameter, surface area, volume, projected area, equivalent diameter, perimeter andlength. According to the physical properties of bean cultivars ‘Aras-98’, ‘Elkoca-05’,‘Göynük-98’, ‘Noyanbey-98’, ‘Yakutiye-98’ and ‘Yunus-90’ were oblongus; ‘Karacaşehir-90’ and ‘Önceler-98’were ellipticus; ‘Akman-98’, ‘Kantar-05’and ‘Terzibaba’ were subcompressusand ‘Çayırlı’ genotype was compressus.