scholarly journals Seed Morphology of Some Species of <i>Indigofera</i> (Fabaceae) from Saudi Arabia (Identification of Species and Systematic Significance)

2011 ◽  
Vol 02 (03) ◽  
pp. 484-495 ◽  
Author(s):  
F. A. Al-Ghamdi
Keyword(s):  
Saudi Arabia ◽  
Seed Morphology ◽  
Systematic Significance ◽  
Identification Of Species

scholarly journals Seed Morphology in the Vitaceae Based on Geometric Models

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 739 ◽  
Author(s):  
José Javier Martín-Gómez ◽  
Diego Gutiérrez del Pozo ◽  
Mariano Ucchesu ◽  
Gianluigi Bacchetta ◽  
Félix Cabello Sáenz de Santamaría ◽  
...  
Keyword(s):  
Water Drop ◽  
Seed Morphology ◽  
Artificial Vision ◽  
Geometric Models ◽  
Complementary Method ◽  
Geometric Figures ◽  
Circularity Index ◽  
Morphometric Methods ◽  
Identification Of Species ◽  
Length Width

Morphometric methods based on artificial vision algorithms provide measurements for magnitudes descriptive of seed images (i.e., the length, width, area, and surface circularity index). Nevertheless, their results frequently omit the resemblance of the images to geometric figures that may be used as models. A complementary method based on the comparison of seed images with geometric models is applied to seeds of Vitis spp. The J index gives the percentage of similarity between a seed image and the model. Seven new geometric models are described based on the heart-shaped and piriform curves. Seeds of different species, subspecies and cultivars of Vitis adjust to different models. Models 1 and 3, the heart curve and the water drop, adjust better to seeds of V. amurensis, V. labrusca and V. rupestris than to V. vinifera. Model 6, the Fibonacci’s pear, adjusts well to seeds of V. vinifera, in general, and better to V. vinifera ssp. vinifera than to V. vinifera ssp. sylvestris. Seed morphology in species of Cissus and Parthenocissus, two relatives of Vitis in the Vitaceae, is also analysed. Geometric models are a tool for the description and identification of species and lower taxonomic levels complementing the results of morphometric analysis.

scholarly journals Systematic Significance of Seed Morphology in Veronica (Plantaginaceae): A Phylogenetic Perspective

2006 ◽  
Vol 98 (2) ◽  
pp. 335-350 ◽  
Author(s):  
LUZ M. MUÑOZ-CENTENO ◽  
DIRK C. ALBACH ◽  
JOSE A. SÁNCHEZ-AGUDO ◽  
M. MONTSERRAT MARTÍNEZ-ORTEGA
Keyword(s):  
Seed Morphology ◽  
Systematic Significance ◽  
Phylogenetic Perspective
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