scholarly journals Seed Geometry in the Arecaceae

Horticulturae ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 64 ◽  
Author(s):  
Diego Gutiérrez del Pozo ◽  
José Javier Martín-Gómez ◽  
Ángel Tocino ◽  
Emilio Cervantes
Keyword(s):  
Seed Morphology ◽  
Model System ◽  
The Internet ◽  
Algebraic Equations ◽  
Seed Shape ◽  
Geometric Figures ◽  
Phoenix Canariensis ◽  
Geometric Representations ◽  
First Time ◽  
Shape Quantification

Fruit and seed shape are important characteristics in taxonomy providing information on ecological, nutritional, and developmental aspects, but their application requires quantification. We propose a method for seed shape quantification based on the comparison of the bi-dimensional images of the seeds with geometric figures. J index is the percent of similarity of a seed image with a figure taken as a model. Models in shape quantification include geometrical figures (circle, ellipse, oval…) and their derivatives, as well as other figures obtained as geometric representations of algebraic equations. The analysis is based on three sources: Published work, images available on the Internet, and seeds collected or stored in our collections. Some of the models here described are applied for the first time in seed morphology, like the superellipses, a group of bidimensional figures that represent well seed shape in species of the Calamoideae and Phoenix canariensis Hort. ex Chabaud. Oval models are proposed for Chamaedorea pauciflora Mart. and cardioid-based models for Trachycarpus fortunei (Hook.) H. Wendl. Diversity of seed shape in the Arecaceae makes this family a good model system to study the application of geometric models in morphology.

Seed morphology of Epilobium and Chamaenerion (Onagraceae) in Turkey

Phytotaxa ◽  
2017 ◽  
Vol 331 (2) ◽  
pp. 169 ◽  
Author(s):  
KAMİL COŞKUNÇELEBİ ◽  
SERDAR MAKBUL ◽  
SEDA OKUR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Morphology ◽  
Morphological Features ◽  
Seed Shape ◽  
Generic Level ◽  
Specific Level ◽  
Periclinal Wall ◽  
First Time ◽  
Scanning Electron

Macro- and micro-morphological features of seeds belonging to 26 taxa from Turkey were observed under the light and scanning electron microscopy. Present findings partly agree with segregation of Epilobium and Chamerion at generic level. The members of the genus Epilobium were distinguished by seeds with conical, semispherical, cylindrical or crest-like papillae or without papillae, granulate periclinal surfaces, papillae with parallel, radial, irregular or spirally furrow and the members of Chamerion were distinguished by seeds crest-like papillae or without papillae and without granulate periclinal surfaces and without furrow. The results also showed that seed shape, presence/absence of papillae and beak, papillae shape and ornamentation, and periclinal wall features are valuable for delimiting the examined taxa specific level within both genera. A key to Turkish Epilobium and Chamerion taxa based on seed morphology is presented for the first time

scholarly journals Seed Morphology in Key Spanish Grapevine Cultivars

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 734
Author(s):  
Emilio Cervantes ◽  
José Javier Martín-Gómez ◽  
Francisco Emmanuel Espinosa-Roldán ◽  
Gregorio Muñoz-Organero ◽  
Ángel Tocino ◽  
...  
Keyword(s):  
Image Analysis ◽  
Morphological Characters ◽  
Seed Morphology ◽  
Dna Polymorphisms ◽  
Seed Shape ◽  
Geometric Figure ◽  
Geometric Figures ◽  
New Methods ◽  
New Models

Ampelography, the botanical discipline dedicated to the identification and classification of grapevine cultivars, was grounded on the description of morphological characters and more recently is based on the application of DNA polymorphisms. New methods of image analysis may help to optimize morphological approaches in ampelography. The objective of this study was the classification of representative cultivars of Vitis vinifera conserved in the Spanish collection of IMIDRA according to seed shape. Thirty eight cultivars representing the diversity of this collection were analyzed. A consensus seed silhouette was defined for each cultivar representing the geometric figure that better adjusted to their seed shape. All the cultivars tested were classified in ten morphological groups, each corresponding to a new model. The models are geometric figures defined by equations and similarity to each model is evaluated by quantification of percent of the area shared by the two figures, the seed and the model (J index). The comparison of seed images with geometric models is a rapid and convenient method to classify cultivars. A large proportion of the collection may be classified according to the new models described and the method permits to find new models according to seed shape in other cultivars.

scholarly journals Seed Morphology in Key Spanish Grapevine Cultivars

2021 ◽  
Author(s):  
Emilio Cervantes ◽  
José Javier Martín-Gómez ◽  
Francisco Emmanuel Espinosa Roldán ◽  
Gregorio Muñoz Organero ◽  
Ángel Tocino ◽  
...  
Keyword(s):  
Image Analysis ◽  
Morphological Characters ◽  
Seed Morphology ◽  
Dna Polymorphisms ◽  
Seed Shape ◽  
Geometric Figure ◽  
Geometric Figures ◽  
New Methods ◽  
New Models

Ampelography, the botanical discipline dedicated to the identification and classification of grapevine cultivars, was grounded on the description of morphological characters and more recently is based on the application of DNA polymorphisms. New methods of image analysis may help to optimize morphological approaches in ampelography. The objective of this study was the classification of representative cultivars of Vitis vinifera conserved in the Spanish collection of IMIDRA according to seed shape. Thirty eight cultivars representing the diversity of this collection were analyzed. A consensus seed silhouette was defined for each cultivar representing the geometric figure that better adjusted to their seed shape. All the cultivars tested were classified in ten morphological groups, each corresponding to a new model. The models are geometric figures defined by equations and similarity to each model is evaluated by quantification of percent of the area shared by the two figures, the seed and the model (J index). The comparison of seed images with geometric models is a rapid and convenient method to classify cultivars. A large proportion of the collection may be classified according to the new models described and the method permits to find new models according to seed shape in other cultivars.

scholarly journals Seed Shape Description and Quantification by Comparison with Geometric Models

Horticulturae ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 60 ◽  
Author(s):  
Cervantes ◽  
Gómez
Keyword(s):  
Image Analysis ◽  
Plant Species ◽  
Reference Point ◽  
Seed Morphology ◽  
Shape Description ◽  
Seed Shape ◽  
Geometric Figures ◽  
Modern Methods ◽  
Horticultural Plants ◽  
The Relationship

Modern methods of image analysis are based on the coordinates of the points making the silhouette of an image and allow the comparison between seed shape in different species and varieties. Nevertheless, these methods miss an important reference point because they do not take into consideration the similarity of seeds with geometrical figures. We propose a method based on the comparison of the bi-dimensional images of seeds with geometric figures. First, we describe six geometric figures that may be used as models for shape description and quantification and later on, we give an overview with examples of some of the types of seed morphology in angiosperms including families of horticultural plants and addressing the question of how is the distribution of seed shape in these families. The relationship between seed shape and other characteristics of plant species is discussed.

scholarly journals An Angiosperm Species Dataset Reveals Relationships between Seed Size and Two-Dimensional Shape

Horticulturae ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. 71 ◽  
Author(s):  
Emilio Cervantes ◽  
José Javier Martín Gómez ◽  
Diego Gutiérrez del Pozo ◽  
Luís Silva Dias
Keyword(s):  
Seed Size ◽  
Seed Morphology ◽  
Adaptive Responses ◽  
Seed Shape ◽  
Geometric Figures ◽  
Genome Complexity ◽  
Geometric Type ◽  
Preliminary Version ◽  
Dimensional Shape ◽  
Angiosperm Species

Datasets containing information on seed size have been published and are currently available. Nevertheless, there is a lack in the literature of a dataset dedicated to seed shape. We present a preliminary version for a dataset on seed morphology based on a comparison of seed shape with geometric figures. Similarity of the outline of seed images with geometric models is considered as a basis to classify seeds according to the geometric figures they resemble (e.g., ellipse, oval, cardioid). This allows, first, the classification of plant species according to their geometric type of seed, and second, seed shape quantification. For each seed image, the percent of similarity of their outline with a geometric figure can be calculated as a J index. Similarity in absolute terms is considered only when the J index >90. This criterion is important to avoid ambiguity and increase discrimination. The dataset opens the possibility of studying the relationship between seed shape and other variables such as seed size, genome complexity, life form or adaptive responses.

Cyberpolitik

ADALAH ◽  
2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Munadhil Abdul Muqsith
Keyword(s):  
Political Communication ◽  
Total Population ◽  
Service Providers ◽  
Mailing List ◽  
The Internet ◽  
Internet Service Providers ◽  
Internet Service ◽  
Internet Users ◽  
Internet Media ◽  
First Time

Abstract:The internet developed for the first time in Indonesia in the early 1990s. Starting from the pagayuban network, it is now expanding without boundaries anywhere. A survey conducted by the Indonesian Internet Service Providers Association (APJII) said that the number of internet users in Indonesia in 2012 reached 63 million people or 24.23 percent of the country's total population. Next year, that figure is predicted to increase by close to 30 percent to 82 million users and continue to grow to 107 million in 2014 and 139 million or 50 percent of the total population in 2015. million people. This matter also results in political communication with the internet media, or is often said to be cyber politics. Cyber politics in Indonesia has faced growth in recent years. There are many facilities that support the growth of cyber politics, such as Facebook, Twitter, mailing list, YouTube, and others.Keywords: Cyberpolitik, Internet  Abstrak:Internet berkembang pertama kali di Indonesia pada awal tahun 1990-an. Diawali dari pagayuban network kini berkembang luas tanpa batas dimanapun juga. Suatu survei yang diselenggarakan Asosiasi Penyelenggara Jasa Internet Indonesia (APJII) mengatakan kalau jumlah pengguna internet di Indonesia tahun 2012 menggapai 63 juta orang ataupun 24,23 persen dari total populasi negeri ini. Tahun depan, angka itu diprediksi naik dekat 30 persen jadi 82 juta pengguna serta terus berkembang jadi 107 juta pada 2014 serta 139 juta ataupun 50 persen total populasi pada 2015. juta orang. Perihal ini pula berakibat pada komunikasi politik dengan media internet, ataupun kerap diucap dengan cyber politic. Cyber politic di Indonesia hadapi pertumbuhan sebagian tahun terakhir. Banyaknya fasilitas yang menunjang pertumbuhan cyber politic semacam terdapatnya facebook, Twitter, mailing list, youtobe, serta lain-lain.Kata Kunci: Cyberpolitik, Internet 

Sources of Information About Gestational Weight Gain, Diet, and Exercise Among Brazilian Immigrant Women Living in the United States: A Cross-Sectional Study

2021 ◽  
pp. 1-41
Author(s):  
Ana Cristina Lindsay ◽  
Qun Le ◽  
Denise Lima Nogueira ◽  
Márcia M. T. Machado ◽  
Mary L. Greaney
Keyword(s):  
United States ◽  
Weight Gain ◽  
Gestational Weight Gain ◽  
The United States ◽  
The Internet ◽  
Sources Of Information ◽  
Cross Sectional ◽  
Gestational Weight ◽  
Diet And Exercise ◽  
First Time

Abstract Objectives: The objective of this study was to assess sources of information about gestational weight gain (GWG), diet, and exercise among first-time pregnant Brazilian women in the United States (US). Design: Cross-sectional survey. Setting: Massachusetts, United States. Participants: First-time pregnant Brazilian women. Results: Eighty-six women, the majority of whom were immigrants (96.5%) classified as having low-acculturation levels (68%), participated in the study. Approximately two-thirds of respondents had sought information about GWG (72.1%), diet (79.1%), and exercise (74.4%) via the internet. Women classified as having low acculturation levels were more likely to seek information about GWG via the internet (OR = 7.55; 95% CI: 1.41, 40.26) than those with high acculturation levels after adjusting for age and receiving information about GWG from healthcare provider (doctor or midwife). Moreover, many respondents reported seeking information about GWG (67%), diet (71%), and exercise (52%) from family and friends. Women who self-identified as being overweight pre-pregnancy were less likely to seek information about diet (OR = 0.32; 95% CI: 0.11, 0.93) and exercise (OR = 0.33; 95% CI: 0.11, 0.96) from family and friends than those who self-identified being normal weight pre-pregnancy. Conclusions: This is the first study to assess sources of information about GWG, diet, and exercise among pregnant Brazilian immigrants in the US. Findings have implications for the design of interventions and suggest the potential of mHealth intervention as low-cost, easy access option for delivering culturally and linguistically tailored evidence-based information about GWG incorporating behavioral change practices to this growing immigrant group.

scholarly journals Seed morphology uncovers 1500 years of vine agrobiodiversity before the advent of the Champagne wine

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vincent Bonhomme ◽  
Jean-Frédéric Terral ◽  
Véronique Zech-Matterne ◽  
Sarah Ivorra ◽  
Thierry Lacombe ◽  
...  
Keyword(s):  
Middle Ages ◽  
Climatic Changes ◽  
Seed Morphology ◽  
Crucial Aspect ◽  
Wild Type ◽  
Grape Seeds ◽  
The Social ◽  
Reference Collection ◽  
Grape Varieties ◽  
First Time

AbstractA crucial aspect of viticulture is finally unveiled as the historical dynamics of its agrobiodiversity are described in the Champagne region for the first time. Outline analyses were carried out to compare the morphology of archaeological grape seeds from Troyes and Reims (first c. AD to fifteenth c. AD) with that of a reference collection of modern seeds, including wild vines and traditional grape varieties, believed to be ancient and characteristic of the French vine heritage. This allows us to document the chronological dynamics of the use of the wild Vitis type and of the diversity of the varieties used, based on morphological disparity. After showing the existence of morphological types corresponding to geographical groups, we highlight a geochronological dynamic. Our results show that the wild type is used throughout the series, up to the Middle Ages. In addition, domestic forms, morphologically related to southern varietal groups, are very early involved in the Champagne grape agrodiversity. The groups corresponding to the typical grape varieties of today do not appear until the second millennium. These previously unsuspected dynamics are discussed in light of the social, societal and climatic changes documented for the period.

scholarly journals Lecture attendance improves success in medical physiology

2017 ◽  
Vol 41 (4) ◽  
pp. 599-603 ◽  
Author(s):  
Enver Ahmet Demir ◽  
Okan Tutuk ◽  
Hatice Dogan ◽  
Duygu Egeli ◽  
Cemil Tumer
Keyword(s):  
Correct Answer ◽  
The Internet ◽  
Correlation Analyses ◽  
Novel Approach ◽  
Second Year ◽  
Educational Sources ◽  
First Time

The educators have underlined the importance of lecture attendance for decades. Nowadays, students have ample online educational sources, which began a debate on the necessity of in-class lectures. In the present study, we investigated the influence of lecture attendance on the exam success. To this aim, we adopted a novel approach and matched second-year medicine students’ answers in three interim exams with the lectures related to those questions. Thereby, we were able to evaluate if attending lectures increases the chance of giving a correct answer to the exam question generated from the attended lecture. Furthermore, we examined students who had never taken the course before (first-time takers) and students who had failed and repeated the course (repeat takers) separately, since repeat takers may have attended a lecture previously. We found that first-time takers attended more lectures and gained higher total scores than repeat takers. Lecture-matched correct answers were significantly higher for attended lectures than for skipped lectures in all interim exams. Moreover, the correlation analyses revealed that the number of correct answers increases by lecture attendance in both first-time and repeat takers. These results indicate that in-class lectures still should be considered as an essential part of the medical physiology education, even in the internet era.

scholarly journals Remarks Using the SEM method Species Seeds of Gentiana occurring in Turkey

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
E. ALÇITEPE ◽  
S. ERKEN ◽  
F. GÜLBAG ◽  
M.E. ÖZZAMBAK
Keyword(s):  
Cell Size ◽  
Morphological Character ◽  
Seed Shape ◽  
Different Types ◽  
Seed Micromorphology ◽  
Periclinal Walls ◽  
First Time ◽  
Seed Characteristics ◽  
Wing Cell

ABSTRACT Seeds of eleven perennial Gentiana collected from Turkey were analyzed using the SEM method. Other species excluding G. septemfida, G. boissieri, G. gelida were studied for the first time. They were identified and compared in terms of seed characteristics and surface ornamentations. Major characteristics including the outer periclinal walls of testa, sculpting of inner periclinal walls, seed shape, seed and testa cell, wing cell size, thickness of testa wall and seed shape have been proposed for Turkey Gentiana. They are divided into different types, such as no wing, chalazal wing, incomplete discoid wing, complete discoid wing according to the outer periclinal walls of testa. Considering primary sculpting of seeds, irregularly striate and shallowly reticulate type is observed. Anticlinal walls of G. olivieri, G. boissieri and G. gelida are curved, while others are straight. G. lutea has the largest mean seed (4.20 x 4.40 mm), while G. cruciata (0.67 x 0.60 mm) and G. olivieri have the smallest mean seeds (0.67 x 0.67 mm). Seed micromorphology can be used together with morphological character to form classifications in studied specimens for Gentiana genus.

Sign in / Sign up

Export Citation Format

Share Document