Shape Discrimination of Almond Cultivars by Elliptic Fourier Descriptors


Demir B., Sayinci B., ÇETİN N., YAMAN M., Comlek R.

ERWERBS-OBSTBAU, cilt.61, sa.3, ss.245-256, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 61 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1007/s10341-019-00423-7
  • Dergi Adı: ERWERBS-OBSTBAU
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.245-256
  • Anahtar Kelimeler: Almond features, Amygdalus communis L, Elliptic Fourier, Physical properties, Shape analysis, PHYSICAL-PROPERTIES, FRUIT SHAPE, QUANTITATIVE-EVALUATION, CHEMICAL-COMPOSITION, IMAGE-ANALYSIS, L. CULTIVARS, SIZE, GENOTYPES, FEATURES, QUALITY
  • Ankara Üniversitesi Adresli: Hayır

Özet

Knowledge is required about shape and size features of almonds before the design of machines, equipment and systems used in harvest and postharvest processes such as classifying, drying, packaging, grading, transportation and quality assessments of almonds. Such attributes are also required for assessing consumer preferences, cultivar registration, security of plant variety rights, investigating heritability and analyzing shape abnormalities. In present study, seven almond cultivars ('Bertina', 'Ferragnes', 'Ferradual', 'Ferrostar', 'Glorieta', 'Lauranne' and 'Marta') grown in Turkey were used in order to determine the longitudinal, surface and gravitational features and to compare their shapes with elliptic Fourier descriptors. 'Bertina', 'Glorieta' and 'Ferragnes' had the greatest longitudinal, surface and gravitational averages. 'Marta' cultivars had the lowest averages in all parameters except for mass, thickness and projected area in suture orientation. Among the almond cultivars, 'Lauranne' and 'Ferrostar' had the lowest mass and thickness averages. Sphericity averages varied between 60.6-71.6% with the greatest value in 'Ferradual' cultivar. Among the cultivars again, 'Ferrostar' had the greatest elongation, roundness and aspect ratio averages. In terms of the nut shape, elliptic Fourier descriptors revealed that the greatest difference was observed in width dimension in horizontal orientation and thickness dimension in suture orientation. MANOVA results revealed that almond cultivars were significantly different from each other in terms of the nut shape. The results of the Bonferroni pairwise comparison test revealed that all almond cultivars was different in shape.