Research Article

Related GMR Articles

Body structure; Frame scores; Genetic improvement; Genetic parameters; Nellore

Models for estimation of frame scores in Nellore beef cattle (FRAME_GMA) were developed, comparing them with frame scores estimated using equations proposed by the Beef Improvement Federation (FRAME_BIF, USA). Correlation among frame scores obtained by these two methodologies, along with the independent variables considered in the estimation models, were also studied. A data set with 12,728 ... more

A.R.V.R. Horimoto; J.B.S. Ferraz; J.C.C. Balieiro; J.P. Eler
Allelic interactions; diallel analysis; Epistasis; Genetic improvement; Heterozygosity; Over-dominance

Isabgol is a medicinal plant known for its high-quality dietary fiber. The genetics and inheritance of economic characters, such as number of panicles, panicle length, seed yield, and swelling factor, were measured by diallel analysis of F1 progenies from seven parents. The additive component of genetic variance was significant for days to flowering, plant height, branches/plant, peduncle ... more

N. Singh; R.K. Lal
Forage; Genetic improvement; Plant resistance

An understanding of the interaction between spittlebugs and forage grasses is essential for establishing factors that favor productive pastures. In the present study, we evaluated the protein profiles of the spittle of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) fed various elephant grass genotypes. Each plant was infested with a single fifth-instar M. ... more

A.M. Auad; M.F. Martins; I. Fonseca; S.V. Paula-Moraes; M.M. Kopp; M.C. Cordeiro
Genetic improvement; Popping expansion; Productivity; Zea mays

This study aimed to obtain estimates of stability and adaptability of phase launched materials and materials recommended in the country, for the northern and northwestern regions of Rio de Janeiro State, Brazil, and made a comparative analysis of different methods to evaluate stability and adaptability of grain yield and popping expansion. To this end, 10 genotypes were evaluated (UNB2U- ... more

G.F. Pena; A.Tdo Amaral Júnior; L.S.A. Gonçalves; L.S. Candido; C. Vittorazzi; R.M. Ribeiro; S.P.Freitas Júnior
Genetic improvement; Plant breeding; Selection efficiency

The objective of this study was to compare the BLUP selection method with different selection strategies in F2:4 and assess the efficiency of this method on the early choice of the best common bean (Phaseolus vulgaris) lines. Fifty-one F2:4 progenies were produced from a cross between the CVIII8511 x RP-26 lines. A randomized block design was used with 20 ... more

M.P. Mendes; M.A.P. Ramalho; A.F.B. Abreu
Genetic improvement; Honeybee queen selection; Major royal jelly proteins; mrjp3; Polymorphism

It is important to select the best honeybees that produce royal jelly to identify important molecular markers, such as major royal jelly proteins (MRJPs), and hence contribute to the development of new breeding strategies to improve the production of this substance. Therefore, this study focused on evaluating the genetic variability of mrjp3, mrjp5, and mrjp8 ... more

R.S. Parpinelli; M.C.C. Ruvolo-Takasusuki; V.A.A. Toledo
Genetic improvement; Recurrent selection; Selection index; Zea mays

The popcorn breeding program of Universidade Estadual do Norte Fluminense Darcy Ribeiro aims to provide farmers a cultivar with desirable agronomic traits, particularly with respect to grain yield (GY) and popping expansion (PE). We evaluated full-sib families from the seventh cycle of recurrent selection and estimated the genetic progress with respect to GY and PE. Eight traits were ... more

I.L.J. Freitas; A.Tdo Amaral Júnior; S.P. Freitas; P.D.S. Cabral; R.M. Ribeiro; L.S.A. Gonçalves
Defense; Expression profile; Kinase; NBS-LRR; Pathogens; Saccharum

Resistance genes (R-genes) are responsible for the first interaction of the plant with pathogens being responsible for the activation (or not) of the defense response. Despite their importance and abundance, no tools for their automatic annotation are available yet. The present study analyzed R-genes in the sugarcane expressed sequence tags database which includes 26 ... more

A.C. Wanderley-Nogueira; N.M. Soares-Cavalcanti; D.A.L. Morais; L.C. Belarmino; A. Barbosa-Silva; A.M. Benko-Iseppon
DNA marker; Fingerprinting; Genetic distance; Saccharum; SSR

Forty genotypes (clones) of sugarcane, including elite lines, commercial cultivars of Saccharum officinarum and clones of S. barberi were fingerprinted with 50 SSR markers using a PCR-based marker assay. Nei’s genetic distances for SSR data were determined and relationships between accessions were portrayed graphically in the form of a dendrogram. Genetic distance values ... more

S. Nawaz; F.A. Khan; S. Tabasum; M.Z. Iqbal; A. Saeed
Deoxyribonucleases; DNA; Gene expression; Plant Leaves; RNA, Plant; Saccharum

The success of gene expression studies, protein synthesis, and construction of cDNA libraries directly depends on the purity and integrity of the RNA used in these tests, as even minor amounts of contaminant DNA (<1%) can produce a false positive amplification signal in quantitative real-time PCR. For RNA contaminated with genomic DNA, an essential step in the studies on gene expression is ... more

J.A. Santos; G.A. Luz; K.P. Oliveira; L.F. Oliveira; A.S.Andrade Júnior; S.E.S. Valente; P.S.C. Lima