Triangulation-Measurement Schemes in the Multivariate Analysis of Size and Shape

1989 ◽  
Vol 70 (3) ◽  
pp. 571-579 ◽  
Author(s):  
M. L. Zelditch ◽  
R. W. Debry ◽  
D. O. Straney
Keyword(s):  
Multivariate Analysis ◽  
Size And Shape

DNA content and chromosome evolution in the shrubby Oxalis

Genome ◽  
1988 ◽  
Vol 30 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Daniel de Azkue ◽  
Arturo Martínez
Keyword(s):  
Multivariate Analysis ◽  
Dna Content ◽  
Numerical Taxonomy ◽  
Chromosome Evolution ◽  
Chromosome Size ◽  
Size And Shape

The amount of DNA varies widely in 20 shrubby Oxalis species analyzed, ranging from 1.76 pg in O. alstonii to 33.00 pg in O. dispar. This wide variation in DNA content coincided with a wide variation in chromosome size and shape. Numerical taxonomy methods showed that this variation in chromosome size and shape in shrubby Oxalis is mainly due to extra DNA. It was also possible to arrange the 20 species examined in six different groups on the basis of karyotypic similarities.Key words: Oxalis, DNA content, chromosome evolution, multivariate analysis.

Cytotaxonomy of the Festuca spp. from Patagonia

1992 ◽  
Vol 70 (6) ◽  
pp. 1134-1140 ◽  
Author(s):  
Jorge Dubcovsky ◽  
Arturo J. Martínez
Keyword(s):  
Multivariate Analysis ◽  
Chromosome Number ◽  
Key Words ◽  
Distance Matrix ◽  
Chromosome Size ◽  
Size And Shape ◽  
Cytological Data ◽  
Vegetative Characters ◽  
First Time

Chromosome number and karyotypes of Festuca argentina (2n = 28), Festuca magellanica (2n = 42 and 2n = 56), and Festuca purpurascens (2n = 42) are described here for the first time, as well as new data on the karyotype of Festuca contracta (2n = 42). Multivariate analysis based on chromosome size and shape showed significant (p < 0.05) differences among these species but not among the populations of F. magellanica analyzed. The correlation between a distance matrix among all the Patagonian species based on nine karyotype parameters and one based on morphoreproductive characters was significant (r = 0.60, p < 0.01) but it was not significant when compared with vegetative characters (r = 0.25, p > 0.05). The morphoreproductive and cytological data supported the classification of the Patagonian species in four different subgenera reflecting that the Patagonian Festuca spp. had different phylogenetic origins. Key words: Festuca, karyotype, cytotaxonomy.

scholarly journals Modificación de caracteres ligados a la domesticación en Cucurbita maxima. Utilización de la morfometría como herramienta para su identificación

2017 ◽  
Vol 40 ◽  
pp. 95 ◽  
Author(s):  
Analía B. Martínez ◽  
Sergio I. Pérez ◽  
Verónica S. Lema ◽  
Fernando López Anido
Keyword(s):  
Multivariate Analysis ◽  
General Trend ◽  
Archaeological Sites ◽  
Cucurbita Maxima ◽  
Morphometric Variation ◽  
Size And Shape ◽  
Second Stage ◽  
Hybrid Forms

Español. El objetivo de este trabajo consiste en reconocer patrones de variación morfométrica –mediante la aplicación de análisis multivariado para tamaño y formaen semillas de C. maxima que sean diagnósticos para formas domesticadas, silvestres e híbridas actuales, a fin de aplicarlos a la identificación de semillas arqueológicas. Para lograr este objetivo se midieron con calibre digital 1317 semillas de las formas antedichas y de nueve sitios arqueológicos de Argentina y Perú. Se exploró el patrón de variación entre las mismas en tamaño y forma mediante análisis multivariado. Se identificó una tendencia general hacia la disminución de la variabilidad en forma y tamaño a lo largo del tiempo, con una primera etapa donde se mantuvieron ejemplares híbridos, generándose nuevas formas y una segunda donde se mantuvieron los rasgos de momentos previos y el aumento del tamaño de las semillas.English. The aim of this paper is to recognize patterns of morphometric variation –through the application of multivariate analysis for size and shape- in C. maxima seeds, which are diagnostic for current domesticated, wild and hybrid forms, in order to be applied to the identification of archaeological seeds. In order to achieve this aim, 1317 seeds were measured with digital caliber corresponding to the former forms and to nine archaeological sites from Argentina and Peru; patterns of variation among them were explored in both size and shape, employing multivariate analysis. A general trend in time towards diminution of variability in size and shape was identified with a first stage in which hybrid forms were maintained and new shapes were generated and a second stage in which features of previous moments were maintained and the size of the seeds were increased.

Multivariate Analysis of the Skull Size and Shape in Tube-Nosed Bats of the GenusMurina(Chiroptera: Vespertilionidae) from Vietnam

Mammal Study ◽  
2015 ◽  
Vol 40 (2) ◽  
pp. 79-94 ◽  
Author(s):  
Nguyen Truong Son ◽  
Masaharu Motokawa ◽  
Tatsuo Oshida ◽  
Vu Dinh Thong ◽  
Gabor Csorba ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Size And Shape ◽  
Skull Size

scholarly journals Modificación de caracteres ligados a la domesticación en Cucurbita maxima. Utilización de la morfometría como herramienta para su identificación

2015 ◽  
Vol 40 ◽  
pp. 95-106
Author(s):  
Analía B. Martínez ◽  
Sergio I. Pérez ◽  
Verónica S. Lema ◽  
Fernando López Anido
Keyword(s):  
Multivariate Analysis ◽  
General Trend ◽  
Archaeological Sites ◽  
Cucurbita Maxima ◽  
Morphometric Variation ◽  
Size And Shape ◽  
Second Stage ◽  
Hybrid Forms

Español. El objetivo de este trabajo consiste en reconocer patrones de variación morfométrica –mediante la aplicación de análisis multivariado para tamaño y formaen semillas de C. maxima que sean diagnósticos para formas domesticadas, silvestres e híbridas actuales, a fin de aplicarlos a la identificación de semillas arqueológicas. Para lograr este objetivo se midieron con calibre digital 1317 semillas de las formas antedichas y de nueve sitios arqueológicos de Argentina y Perú. Se exploró el patrón de variación entre las mismas en tamaño y forma mediante análisis multivariado. Se identificó una tendencia general hacia la disminución de la variabilidad en forma y tamaño a lo largo del tiempo, con una primera etapa donde se mantuvieron ejemplares híbridos, generándose nuevas formas y una segunda donde se mantuvieron los rasgos de momentos previos y el aumento del tamaño de las semillas.English. The aim of this paper is to recognize patterns of morphometric variation –through the application of multivariate analysis for size and shape- in C. maxima seeds, which are diagnostic for current domesticated, wild and hybrid forms, in order to be applied to the identification of archaeological seeds. In order to achieve this aim, 1317 seeds were measured with digital caliber corresponding to the former forms and to nine archaeological sites from Argentina and Peru; patterns of variation among them were explored in both size and shape, employing multivariate analysis. A general trend in time towards diminution of variability in size and shape was identified with a first stage in which hybrid forms were maintained and new shapes were generated and a second stage in which features of previous moments were maintained and the size of the seeds were increased.

Multivariate analysis of body size and shape in schizophrenia

1998 ◽  
Vol 29 (1-2) ◽  
pp. 202 ◽  
Author(s):  
J.L. Reilly ◽  
A. Lane ◽  
A. Kinsella ◽  
C. Larkin ◽  
E. O'Callaghan
Keyword(s):  
Multivariate Analysis ◽  
Body Size ◽  
Size And Shape
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