scholarly journals Genetic variability of 29 Peruvian quinoa (Chenopodium quinoaWilld) accessions using AFLP markers and multivariate analysis

2021 ◽  
Vol 12 (1) ◽  
pp. 57-64
Author(s):  
Paula García-Godos ◽  
Judith M. Cueva-Castillo
Keyword(s):  
Multivariate Analysis ◽  
Genetic Variability ◽  
Aflp Markers

scholarly journals Population genetic variability and distribution of the endangered Greek endemic Cicer graecum under climate change scenarios

AoB Plants ◽  
2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Efthalia Stathi ◽  
Konstantinos Kougioumoutzis ◽  
Eleni M Abraham ◽  
Panayiotis Trigas ◽  
Ioannis Ganopoulos ◽  
...  
Keyword(s):  
Climate Change ◽  
Genetic Diversity ◽  
Genetic Variability ◽  
Hot Spot ◽  
Extinction Risk ◽  
Aflp Markers ◽  
Ex Situ ◽  
Dominant Factor ◽  
Climate Change Scenarios ◽  
Global Circulation Models

Abstract The Mediterranean hot spot includes numerous endemic and socio-economically important plant species seriously threatened by climate change and habitat loss. In this study, the genetic diversity of five populations of Cicer graecum, an endangered endemic species from northern Peloponnisos, Greece and a wild relative of the cultivated Cicer arietinum, was investigated using inter-simple sequence repeats (ISSRs) and amplified fragment length polymorphism (AFLP) markers in order to determine levels and structure of genetic variability. Nei’s gene diversity by ISSR and AFLP markers indicated medium to high genetic diversity at the population level. Moreover, AMOVA results suggest that most of the variation exists within (93 % for AFLPs and 65 % for ISSRs), rather than among populations. Furthermore, Principal Component Analysis based on ISSRs positively correlated the genetic differentiation among the populations to the geographic distances, suggesting that the gene flow among distant populations is limited. The ecological adaptation of C. graecum populations was also investigated by correlation of their genetic diversity with certain environmental variables. Aridity arose as the dominant factor positively affecting the genetic diversity of C. graecum populations. We modelled the realized climatic niche of C. graecum in an ensemble forecasting scheme under three different global circulation models and two climate change scenarios. In all cases, a severe range contraction for C. graecum is projected, highlighting the high extinction risk that is probably going to face during the coming decades. These results could be a valuable tool towards the implementation of an integrated in situ and ex situ conservation scheme approach for activating management programmes for this endemic and threatened species.

Assessment of genetic variability of olive varieties by microsatellite and AFLP markers

Euphytica ◽  
2004 ◽  
Vol 136 (1) ◽  
pp. 93-102 ◽  
Author(s):  
Dunja Bandelj ◽  
Jernej Jakše ◽  
Branka Javornik
Keyword(s):  
Genetic Variability ◽  
Aflp Markers ◽  
Olive Varieties

Genetic relationships among Aster species by multivariate analysis and AFLP markers

Hereditas ◽  
2004 ◽  
Vol 140 (3) ◽  
pp. 193-200 ◽  
Author(s):  
M. CAMMARERI ◽  
A. ERRICO ◽  
A. SEBASTIANO ◽  
C. CONICELLA
Keyword(s):  
Multivariate Analysis ◽  
Genetic Relationships ◽  
Aflp Markers

Analysis of genetic variability in Couepia accessions using AFLP markers

2008 ◽  
Vol 56 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Yomara Rozo ◽  
Lorena Quintero ◽  
Mauricio Parra ◽  
Carlos Rodríguez ◽  
Luz Marina Melgarejo
Keyword(s):  
Genetic Variability ◽  
Aflp Markers

scholarly journals Estimates of genetic divergence in cowpea by multivariate analysis in different environments

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Larissa Pereira Ribeiro ◽  
Jeniffer Santana Pinto Coelho Evangelista ◽  
Michelle Brandão Damacena ◽  
Arthur Mayrink Elizeu ◽  
Igor Ferreira Coelho ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Multivariate Analysis ◽  
Genetic Variability ◽  
Agronomic Traits ◽  
Optimization Methods ◽  
Clustering Methods ◽  
Mato Grosso ◽  
Genetic Potential ◽  
Pod Length ◽  
Mato Grosso Do Sul

Cowpea is a legume of great importance in the Brazilian nutrition, mainly in the Northeast region. Despite the low yield of Brazilian cowpea, the species presents a genetic potential to be explored. Thus, this work aimed to characterize the genetic diversity of cowpea genotypes by agronomic traits and select genotypes for possible crosses by multivariate analysis. Four value for cultivation and use tests were carried out with cowpea genotypes in 2005 and 2006, in the municipalities of Aquidauana, Chapadão do Sul, and Dourados, in the state of Mato Grosso do Sul. The experimental design was a complete randomized block with 20 genotypes and four replications. The evaluated traits were value for cultivation, plant lodging, pod length, grain weight of five pods, number of grains per pod, pod weight, severity of powdery mildew, and grain yield. To estimate the genetic diversity among the genotypes, the optimization methods of Tocher and UPGMA were used. The generalized distance of Mahalanobis was used as a dissimilarity measure. The clustering methods revealed genetic variability among the cowpea genotypes evaluated. The methods used formed a different number of groups for each environment. Genotypes TE97-309G-24, MNC99-542F-5, BRS Paraguaçu, BRS Paraguaçu, BR 17-Gurguéia, and CNC x 409-11F-P2 can be used to obtain promising combinations and high genetic variability.

scholarly journals Genetic diversity characterization of cassava cultivars (Manihot esculenta Crantz).: I) RAPD markers

1998 ◽  
Vol 21 (1) ◽  
pp. 105-113 ◽  
Author(s):  
Carlos Colombo ◽  
Gérard Second ◽  
Tereza Losada Valle ◽  
André Charrier
Keyword(s):  
Genetic Diversity ◽  
Multivariate Analysis ◽  
Genetic Variability ◽  
Manihot Esculenta ◽  
Core Collection ◽  
Rapd Markers ◽  
Manihot Esculenta Crantz ◽  
Important Resource ◽  
Flour Production

RAPD markers were used to investigate the genetic diversity of 31 Brazilian cassava clones. The results were compared with the genetic diversity revealed by botanical descriptors. Both sets of variates revealed identical relationships among the cultivars. Multivariate analysis of genetic similarities placed genotypes destinated for consumption "in nature" in one group, and cultivars useful for flour production in another. Brazil’s abundance of landraces presents a broad dispersion and is consequently an important resource of genetic variability. The botanical descriptors were not able to differentiate thirteen pairs of cultivars compared two-by-two, while only one was not differentiated by RAPD markers. These results showed the power of RAPD markers over botanical descriptors in studying genetic diversity, identifying duplicates, as well as validating, or improving a core collection. The latter is particularly important in this vegetatively propagated crop.

scholarly journals Genetic variability among soybean biparental crosses evaluated by multivariate analysis

2015 ◽  
Vol 31 (5) ◽  
pp. 1404-1412
Author(s):  
Larissa Barbosa de Sousa ◽  
Osvaldo Toshiyuki Hamawaki ◽  
Renata Oliveira Batista ◽  
Ivandro Bertan ◽  
Ana Paula Oliveira Nogueira ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Genetic Variability
Sign in / Sign up

Export Citation Format

Share Document