scholarly journals Research Article Morphological characterization and genetic divergence of a cashew population in Floriano, Piauí, Brazil

2019 ◽  
Vol 18 (3) ◽  
Author(s):  
L.A. Carneiro ◽  
L.S. Silva ◽  
M.F.C. Gomes ◽  
M.F. Santos ◽  
S.E.S. Valente ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Morphological Characterization ◽  
Research Article

scholarly journals GENETIC DIVERGENCE AND MORPHO-AGRONOMIC PERFORMANCE OF JATROPHA CURCAS L. CLONES FOR SELECTION OF CLONAL VARIETIES

2016 ◽  
Vol 29 (4) ◽  
pp. 841-849
Author(s):  
ADRIANA QUEIROZ DE ALMEIDA ◽  
SIMONE ALVES SILVA ◽  
VANESSA DE OLIVEIRA ALMEIDA ◽  
DEOCLIDES RICARDO DE SOUZA ◽  
GILMARA DE MELO ARAÚJO
Keyword(s):  
Genetic Diversity ◽  
Multivariate Analysis ◽  
Plant Height ◽  
Genetic Divergence ◽  
Morphological Characterization ◽  
Stem Diameter ◽  
Agronomic Performance ◽  
And Performance ◽  
Lower Contribution ◽  
Selection Of

ABSTRACT The knowledge about genetic diversity of jatropha crop is important for genetic conservation resources and breeding of this species. The aim of this study was to evaluate the genetic diversity and performance of jatropha clones through morphological characterization to selection of clonal varieties for biofuels production. The clones were obtained through shoot cuttings from previous selection in a population of half-sibs progenies. The morphoagronomic analyses of clones was carried out at 180 days after transplantation and were evaluated plant height, stem diameter, number of primary branches and number of secondary branches, number of bunches and number of fruits per plant. Evaluating clones performance, significant results were found for the number of secondary branches. About analysis of genetic diversity, the measures of dissimilarity genetic varied from 0.62 to 13.11, this way, the UFRBPR14 and UFRBPR15 clones were more divergent. The Tocher method was efficient to verify formation of four groups. The characteristics that most contributed to the divergence among clones were branches number, height and number of bunches, and, stem diameter had lower contribution. The jatropha clones differed only in the secondary branches number and multivariate analysis showed divergence among the jatropha clones with formation of four groups. Also, branches number, plant height and number of bunches were characteristic that contributed to genetic divergence.

scholarly journals Research Article Genetic divergence among inbred onion lines and correlation with heterosis and combining ability

2019 ◽  
Vol 18 (3) ◽  
Author(s):  
M.V. Faria ◽  
W.L. Zaluski ◽  
J. Rosa ◽  
E.S. Rossi ◽  
J.T.V. Resende ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Combining Ability ◽  
Research Article

scholarly journals Research Article Quaternary origin and genetic divergence of the endemic cactus Mammillaria pectinifera in a changing landscape in the Tehuacán Valley, Mexico

2014 ◽  
Vol 13 (1) ◽  
pp. 73-88 ◽  
Author(s):  
A. Cornejo-Romero ◽  
J. Medina-Sánchez ◽  
T. Hernández-Hernández ◽  
B. Rendón-Aguilar ◽  
P.L. Valverde ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Tehuacán Valley ◽  
Research Article ◽  
Tehuacan Valley

scholarly journals Research Article Digital image analysis to quantify genetic divergence in passion fruit (Passiflora edulis) seeds

2019 ◽  
Vol 18 (3) ◽  
Author(s):  
L.R. Fachi ◽  
W. Krause ◽  
H.D. Vieira ◽  
D.V. Araújo ◽  
P.B. Luz ◽  
...  
Keyword(s):  
Image Analysis ◽  
Digital Image ◽  
Genetic Divergence ◽  
Digital Image Analysis ◽  
Passion Fruit ◽  
Research Article

scholarly journals MORPHOLOGICAL CHARACTERIZATION AND GENETIC DIVERSITY IN ORNAMENTAL SPECIMENS OF THE GENUS SANSEVIERIA

2020 ◽  
Vol 33 (4) ◽  
pp. 985-992
Author(s):  
MÉRCIA DE CARVALHO ALMEIDA RÊGO ◽  
ANGELA CELIS DE ALMEIDA LOPES ◽  
ROSELI FARIAS MELO DE BARROS ◽  
ALONSO MOTA LAMAS ◽  
MARCONES FERREIRA COSTA ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Experimental Design ◽  
Genetic Divergence ◽  
Leaf Growth ◽  
Morphological Characterization ◽  
Clustering Method ◽  
Mean Values ◽  
Qualitative And Quantitative ◽  
Randomized Experimental Design

ABSTRACT The aim of this study was to characterize and estimate genetic divergence among twelve specimens of the Sansevieria genus from the collection of the Universidade Federal do Piauí (UFPI). A completely randomized experimental design was used with three replicates, and the plot consisted of four plants. In morphological characterization, qualitative and quantitative descriptors of leaves were evaluated. Genetic divergence among the specimens was determined by the Tocher clustering method and the hierarchical UPGMA. There is genetic variation among specimens evaluated, which was also expressed by the variability of colors, shapes, and sizes of the leaves. The Tocher clustering method and the hierarchical UPGMA were effective in differentiation of the specimens from multi-categorical qualitative descriptors, as the Tocher method grouped the accessions in two groups and the UPGMA in seven different groups. We highlight the accessions SSV 09 and SSV 10 as exhibiting the highest mean values in weekly leaf growth and in leaf height, important characteristics for local sale and for export.

scholarly journals MORPHOLOGICAL CHARACTERIZATION AND GENETIC DIVERGENCE IN MYANMAR SESAME (Sesamum indicum L.) GERMPLASM.

2018 ◽  
Vol 6 (4) ◽  
pp. 297-307 ◽  
Author(s):  
Myint Aye ◽  
◽  
TinTin Khaing ◽  
NangHseng Hom ◽  
◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Morphological Characterization ◽  
Sesamum Indicum

scholarly journals Research Article Genetic divergence between onion populations derived from three different crossing methods

2019 ◽  
Vol 18 (4) ◽  
Author(s):  
D.L.M. Machado ◽  
J.A. de Freitas ◽  
J.M.Q. Luz ◽  
G.M. Maciel ◽  
A.P.O. Nogueira ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Research Article

scholarly journals Research Article Genetic divergence among landraces and improved common bean genotypes in the central-southern region of Mato Grosso state in Brazil

2019 ◽  
Vol 18 (2) ◽  
Author(s):  
P.R.J. dos Santos ◽  
M.A.A. Barelli ◽  
R. Felipin-Azevedo ◽  
V.P. da Silva ◽  
T.A.S. Gilio ◽  
...  
Keyword(s):  
Common Bean ◽  
Genetic Divergence ◽  
Southern Region ◽  
Mato Grosso ◽  
Research Article

scholarly journals Morphological characterization and analysis of genetic variability among pepper accessions

2016 ◽  
Vol 46 (7) ◽  
pp. 1151-1157 ◽  
Author(s):  
Paola Alvares Bianchi ◽  
Iris Petronilia Dutra ◽  
Monique Moreira Moulin ◽  
Jardel Oliveira Santos ◽  
Alexandre Cristiano Santos Júnior
Keyword(s):  
Genetic Variability ◽  
Genetic Divergence ◽  
Morphological Characterization ◽  
Economic Potential ◽  
Morphological Descriptors ◽  
Espírito Santo ◽  
Relative Contribution ◽  
Grouping Method ◽  
Total Divergence ◽  
Espirito Santo

ABSTRACT: The peppers of the genus Capsicumhave economic potential and elevated genetic variability. The objective of the study was to characterize morpho-agronomically and estimate the genetic divergence among pepper accessions of the active germplasm bank of Capsicumof the Instituto Federal do Espírito Santo, Campus Alegre. Thirty accessions were characterized based on ten morphological descriptors being the experimental design completely randomized, with six repetitions. Genetic diversity among the accessions was estimated by the Tocher grouping method as a measurement of dissimilarity and formed eight groups. The Singh method, used to estimate the relative contribution of each character in the expression of genetic divergence, indicated that the diameter of the produce (20.19%) and the height of the plant (19.46%) were the ones to contribute most to the total divergence (39.65%) among the accessions of pepper being studied. The study evidenced the existence of high genetic variability among the accessions of C. annuumcollected in the south region of the state of Espírito Santo. No correlation was detected between the genetic distance and location of collections.

scholarly journals GENETIC DIVERSITY OF BRAZILIAN PEPPER BASED ON QUALITATIVE REPRODUCTIVE TRAITS

2019 ◽  
Vol 17 (3) ◽  
pp. 1
Author(s):  
Gabriel Mascarenhas Maciel ◽  
Fábio Janoni Carvalho ◽  
Camila Soares de Oliveira ◽  
Aline José da Silveira ◽  
Lucas Medeiros Pereira ◽  
...  
Keyword(s):  
Genetic Divergence ◽  
Graphical Representation ◽  
Reproductive Traits ◽  
Optimization Method ◽  
Morphological Characterization ◽  
Genetic Distances ◽  
Germplasm Bank ◽  
Reproductive Phase ◽  
Brazilian Pepper

In Brazil, pepper cultivation gives producers more marketing opportunities in various segments, either for fresh consumption or industry. Reproductive traits are efficient methods for comparing genetic divergence in pepper, once most differences among accessions could be verified at this stage. This study aimed to evaluate the genetic divergence in the reproductive phase of pepper accessions by multivariate analysis and test the efficiency of different methods. Sixty-five genotypes from the Federal University of UberlândiaCapsicum spp. Germplasm Bank were evaluated 145 days after sowing, and morphological characterization was performed at reproductive phase. Graphical representation of genetic distances was obtained by UPGMA. Tocher optimization method was also used to group accessions. Genotypes were arranged in seventeen different groups by Tocher method. UPGMA dendrogram collaborated with Tocher method, indicating the wide genetic variability of genotypes. Tocher and UPGMA methods were partially in agreement, allowing grouping 44 of the 65 analyzed accessionsequally. Multicategorical traits have the advantage of easy observation and require less time and labor, being ideal for use in gene bank and collections that do not have high human and financial resources. Moreover, these traits are not affected by the environment. Genetic divergence detected in this paper encourages other researchers to perform the characterization of pepper collections as completely as possible, because it becomes possible to generate more reliable information of the variability and genetic divergence among accessions. Our research discloses the reproductive biodiversity of pepper in “Alto Paranaíba” and “TriânguloMineiro” regions and the importance of maintaining these genotypes.

Sign in / Sign up

Export Citation Format

Share Document