Research Article

Related GMR Articles

Joint analysis; Random amplified polymorphic DNA markers; Solanum lycopersicum; Ward-MLM

Accessions in gene banks need to be characterized and evaluated to determine their genetic diversity. We made a joint diversity analysis of the tomato gene bank of the Universidade Estadual do Norte Fluminense Darcy Ribeiro in Rio de Janeiro state, using the Ward-modified location model. Forty Solanum lycopersicum accessions were characterized and evaluated for 22 morphoagronomic ... more

L.S.A. Gonçalves; R. Rodrigues; A.Tdo Amaral Júnior; M. Karasawa; C.P. Sudré
Genetic divergence; interspecific hybrid; Joint analysis; Morphoagronomic characterization; Ward-modified location model (MLM) method

Morphological characterization is the most accessible and used method to quantify the genetic diversity of the available germplasm. The multivariate statistical method is highly important for this purpose. This study aimed to characterize parents and hybrids of Passiflora according to morphoagronomic descriptors and estimate the genetic divergence between them based on the joint ... more

E.A. Santos; A.P. Viana; J.C.O. Freitas; M.M. Souza; C.L. Paiva; D.L. Rodrigues; R.F. Tavares
Coefficient of parentage; Genetic diversity; Germplasm characterization; Joint analysis; Sugarcane varieties

The success of the development of new sugarcane varieties is associated with the ability to correctly select the genitor. The aim of this study was to evaluate the genetic diversity between 113 clones and sugarcane varieties using the Ward-modified location model procedure with added information about the coefficient of parentage and endogamy. In this study, data was used from 100 ... more

B.P. Brasileiro; C.D. Marinho; P.M.A. Costa; L.A. Peternelli; M.D.V. Resende; D.E. Cursi; H.P. Hoffmann; M.H.P. Barbosa
Genetic resources; Joint analysis; Manihot esculenta

Brazil is the fourth largest producer of cassava in the world. In the state of Mato Grosso more than 90% of family farmers grow cassava; therefore, studies that evaluate the genetic resources of this species present in the fields of these farmers can be considered essential. The objective of this study was to evaluate the genetic variability among ethnovarieties of ... more

A. .V.Tiago; E. .C.M.Pedri; F. .S.Rossi; L. .L.Santos; J. .A.Lima; E. .S.Cardoso; A. .P.Roveda; E. .S.S.Hoogerheide; A. .A.B.Rossi
Genetic variability; Microsatellites; Molecular characterization; Musa spp

Microsatellite markers have been widely used in the quantification of genetic variability and for genetic breeding in Musa spp. The objective of the present study was to evaluate the discriminatory power of microsatellite markers derived from ‘Calcutta 4’ and ‘Ouro’ genomic libraries, and to analyze the genetic variability among 30 banana accessions. Thirty-eight markers were ... more

P.R.O. Silva; O.N.J. Jesus; S. Creste; A. Figueira; E.P. Amorim; C.F. Ferreira
Cacauí; Cupuí; Genetic variability; Theobroma speciosum; Theobroma subincanum

Several species within the genus Theobroma have particularly high economic value, including T. cacao and T. grandiflorum. Other species in this genus, such as T. speciosum and T. subincanum, have potential value for use in the conservation of genetic diversity in breeding programs. These latter species could also be domesticated or improved to ... more

B.M. Silva; A.A.B. Rossi; J.F.E. Dardengo; C.R. Silva; I.V. Silva; M.L. Silva; C.J. Silva
Endangered species; Genetic variability; ISSR; Molecular markers; RAPD

The goal of this study was to characterize the structure of two natural populations of the coral tree using RAPD and ISSR markers. The study evaluated all individuals in two different areas in the northeastern region of Brazil: the first was in the riparian area, 10 km x 100 m along the edge of the lower São Francisco River, and the second was in the municipality of Pinhão, in a semiarid ... more

M.F.V. Melo; L.O. Gonçalves; A.R.C. Rabbani; S.V. Álvares-Carvalho; J.B. Pinheiro; M.I. Zucchi; R. Silva-Mann
Ficus benjamina; Genetic variability; Haplodiploidy; Heterozygosity; Inter-simple sequence repeat; Thrips

Gynaikothrips uzeli (Thysanoptera: Phlaeothripidae) is a minuscule insect species, which forms galls, is subsocial, and parthenogenetic. It is associated with Ficus benjamina L. (Moraceae) and has a pantropical occurrence. The paucity of genetic studies on the order Thysanoptera led us to use inter-simple sequence repeat molecular marker to assess intra- and inter-gall, ... more

A.L.S. Mascarenhas; A.M. Waldschmidt; J.C. Silva
Conservation; Genetic variability; Harvesting; ISSR

Maytenus truncata (Celastraceae) is a plant species widely used in the treatment of ulcers and tumors. Despite the intensive harvest of native specimens in the State of Bahia, northeastern Brazil, there is no information about the genetic variability or structure of this species. Therefore, the goal of this study was to estimate the genetic diversity and population structure of ... more

R.R. Simplicio; A.M. Waldschmidt; M.B. Amorim; B.S. Almeida; D.G. Pereira
Genetic resources; Genetic variability; Germplasm; Orbignya phalerata

Babassu (Orbignya phalerata Martius) is one of the most important palms in Brazil because of the largest morphological variation, wide geographic distribution, and high socio-economic importance. The diversity present in babassu germplasm should be protected against loss to ensure their use with high productivity. Study of the available variability in populations of babassu is ... more

J.P.G. Viana; A.N.C. Borges; A.C.A. Lopes; R.L.F. Gomes; F.B. Britto; P.S.C. Lima; S.E.S. Valente