Research Article

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09/22/2009
Bicollateral bundles; Breeding improvement; Euphorbiaceae; Internal phloem; Manihot esculenta Crantz; Manihot oligantha Pax

We examined the stem anatomy of Manihot esculenta Crantz and its hybrid with M. oligantha Pax. Cross-sections were stained with safranin-alcian blue. Manihot esculenta and its hybrid were found to have the same vascular structure in bicollateral bundles with internal phloem, which has been associated with drought resistance in other plant groups. If this ... more

D. Graciano-Ribeiro; D.Y.C. Hashimoto; L.C. Nogueira; D. Teodoro; S.F. Miranda; N.M.A. Nassar
11/29/2011
AFLP; Biofuel; Germplasm; Panicum; Switchgrass; trnL (UAA)

Switchgrass (Panicum virgatum) is a perennial warm-season grass native to North America that has been identified as a dedicated cellulosic biofuel crop. We quantified genetic diversity in tetraploid switchgrass germplasm collected at Oklahoma State University and characterized genetic relatedness among the collections from distinct regions. Fifty-six tetraploid accessions, ... more

J. Todd; Y.Q. Wu; Z. Wang; T. Samuels
12/06/2013
Cluster; Cucumis melo; Descriptors; Germplasm; Simple sequence repeat

The genetic divergence of 38 melon accessions from traditional agriculture of the Brazilian Northeast and three commercial hybrids were evaluated using fruit descriptors and microsatellite markers. The melon germplasm belongs to the botanic varieties cantalupensis (19), momordica (7), conomon (4), and inodorus (3), and to eight genotypes that were ... more

F.A.S. Aragão; T. Filho; G.H.S. Nunes; M.A. Queiróz; P.N. Bordallo; G.S.C. Buso; M.A. Ferreira; Z.P. Costa; B. Neto
12/04/2013
Arctic fox; Genetic diversity; Germplasm; SRAP marker

Sequence-related amplified polymorphism (SRAP) is a recently developed molecular marker technique that is stable, simple, reliable, and achieves moderate to high numbers of codominant markers. This study is the first to apply SRAP markers in a mammal, namely the Arctic fox. In order to investigate the genetic diversity of the Arctic fox and to provide a reference for use of its germplasm ... more

M. Zhang; X.J. Bai
09/12/2013
Cerrado; Conservation; Genetic variability; Germplasm; Multivariate techniques

The fragmentation of the original vegetation of the Cerrado biome, caused by the expansion of agricultural areas, mainly in central-west Brazil, calls for an assessment of the native population of this vegetation, especially of the species of interest for domestication and sustainable use. The purpose of this study was to characterize the genetic diversity of 140 gabiroba mother plants ( ... more

E.S. de Assis; E.Fdos Reis; J.F.N. Pinto; L.A.S. Contim; L.A.S. Dias
04/08/2014
Antitumor potential; Carvacrol; Germplasm; Lippia gracilis; Thymol; Volatile oil

This study aimed to evaluate the chemical composition of the essential oils from three genotypes of Lippia gracilis Schauer (Verbenaceae) and investigate the cytotoxic activities of these oils. Essential oils were extracted from the leaves using a Clevenger-type apparatus, and chemical analysis was performed using a gas chromatograph coupled to a mass spectrometer and flame ... more

J.O. Melo; A.L. Fachin; W.F. Rizo; H.C.R. Jesus; M.F. Arrigoni-Blank; P.B. Alves; M.A. Marins; S.C. França; A.F. Blank
06/11/2015
cluster analysis; Core collection; Germplasm; Malus domestica; Simple sequence repeat

Several types of information can be used to select core collections, including passport data, agronomic data, and molecular data. However, little is known about the ability of core collections to retain the genetic diversity and structure of the whole collection for characters that were not considered during the selection, particularly when molecular markers are used. In this study, two ... more

W.H. Yun; S.H. Ban; G.H. Kim; J.H. Kim; S.I. Kwon; C. Choi
03/31/2015
Germplasm; Mungbean; Mungbean yellow mosaic virus disease; Sequence characterized amplified region

Mungbean yellow mosaic virus disease (MYMVD) caused by single-stranded DNA begomovirus is the most prominent threat to the mungbean crop in Pakistan. Mungbean genotypes consisting of 127 varieties/lines were screened for MYMVD under natural field conditions. No genotypes were found to be immune or highly resistant against MYMVD. Genotypes showing resistant and tolerant responses in field ... more

R. Binyamin; M.A. Khan; N.A. Khan; A.I. Khan
07/14/2015
Germplasm; Meristem culture; Molecular marker; Somaclonal variation

Molecular markers are efficient for assessing the genetic fidelity of various species of plants after in vitro culture. In this study, we evaluated the genetic fidelity and variability of micropropagated cassava plants (Manihot esculenta Crantz) using inter-simple sequence repeat markers. Twenty-two cassava accessions from the Embrapa Cassava & Fruits Germplasm Bank ... more

Á.M. Vidal; L.J. Vieira; C.F. Ferreira; F.V.D. Souza; A.S. Souza; C.A.S. Ledo
11/29/2011
Breeding; Cultivated oat; SSR; Wild oat

Preservation and use of wild oat species germplasm are essential for further improvement of cultivated oats. We analyzed the transferability and utility of cultivated (white) oat Avena sativa (AACCDD genome) microsatellite markers for genetic studies of black oat A. strigosa (AsAs genome) genotypes. The DNA of each black oat genotype was extracted from young leaves and ... more

P.R. Da-Silva; S.C.K. Milach; L.M. Tisian

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