Research Article

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The growing demand for maize creates a challenge for breeders; they need to constantly develop higher yielding and higher quality genotypes. We estimated the most relevant genetic parameters, along with heterosis and variance components. A multivariate approach was used in order to define profiles of narrow sense heritability for yield and nutritional components in ... more

I.R. Carvalho; A.J. de Pelegrin; M. Ferrari; V.J. Szareski; T.C. da Rosa; V.F. de Oliveira; J.F. Hoffmann; M. Nardino; G.G. Conte; F.C. Chaves; V.Q. de Souza; A.C. de Oliveira; L.C. da Maia
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Breeding; Germplasm bank; Pepper; Polymorphism; Simple sequence repeat

In order to support further genetic, diversity, and phy­logeny studies of Capsicum species, the transferability of a Capsicum annuum L. simple sequence repeat (SSR) microsatellite set was ana­lyzed for C. frutescens L. (“malagueta” and “tabasco” peppers) and C. chinense Jacq. (smell peppers, among other types). A total of 185 SSR primers were evaluated ... more

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P.A. Barroso; M.M. Rêgo; E.R. Rêgo; W.S. Soares
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Abiotic stress; Breeding; Manihot esculenta Crantz; Post-harvest losses; REML/BLUP

Tolerant varieties can effectively control post-harvest physiological deterioration (PPD) of cassava, although knowledge on the genetic variability and inheritance of this trait is needed. The objective of this study was to estimate genetic parameters and identify sources of tolerance to PPD and their stability in cassava accessions. Roots from 418 cassava accessions, grown in four ... more

M.T. Venturini; L.R. Santos; C.I.A. Vildoso; V.S. Santos; E.J. Oliveira; M.T. Venturini; L.R. Santos; C.I.A. Vildoso; V.S. Santos; E.J. Oliveira
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Breeding; Genomic prediction; Heritability; Prediction ability; Quantitative genetics

Genomic selection is a useful technique to assist breeders in selecting the best genotypes accurately. Phenotypic selection in the F2 generation presents with low accuracy as each genotype is represented by one individual; thus, genomic selection can increase selection accuracy at this stage of the breeding program. This ... more

L.A. Peixoto; L.L. Bhering; C.D. Cruz
12/02/2016
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Four Hyriopsis cumingii populations, a breeding population (BP), a cultured population (FP), two wild populations from Poyang Lake (PY) and Dongting Lake (DT), and an H. schlegelii population were collected (JX), and the first filial generations (F1) were bred synchronously. The shell nacre polymorphisms, population genetic diversity, and genetic structures of the F1 of each population were ... more

L.M. Wu; Z.Y. Bai; X.J. Liu; C. Jin; H. Yin; J.L. Li
12/02/2016
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Myostatin (MSTN) is expressed in the myotome and developing skeletal muscles, and acts to regulate the number of muscle fibers. Wuding chicken large body, developed muscle, high disease resistance, and tender, delicious meat, and are not selected for fast growth. Broiler chickens (Avian broiler) are selected for fast growth and have a large body size and high muscle mass. Here, 240 one-day-old ... more

L.X. Liu; T.F. Dou; Q.H. Li; H. Rong; H.Q. Tong; Z.Q. Xu; Y. Huang; D.H. Gu; X.B. Chen; C.R. Ge; J.J. Jia
12/02/2016
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Brazil is the world's largest producer of beef cattle; however, the quality of its herds needs to be improved. The use of molecular markers as auxiliary tools in selecting animals for reproduction with high pattern for beef production would significantly improve the quality of the final beef product in Brazil. The leptin gene has been demonstrated to be an excellent candidate gene for bovine ... more

R.C. Guimarães; J.S.N. Azevedo; S.C. Corrêa; J.E.G. Campelo; E.M. Barbosa; E.C. Gonçalves; S. Filho
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Breeding; Crosses, Genetic; Disease resistance; Genes, Plant; Genetic markers; Microsatellite Repeats; Oryza; Plant Diseases

Rice (Oryza sativa L.) blast disease is one of the most destructive rice diseases in the world. The fungal pathogen, Magnaporthe oryzae, is the causal agent of rice blast disease. Development of resistant cultivars is the most preferred method to achieve sustainable rice production. However, the effectiveness of resistant cultivars is hindered by the genetic plasticity of the pathogen genome. ... more

N. Hasan; M.Y. Rafii; A. Rahim; S.A. Nusaibah; N. Mazlan; S. Abdullah
2/08/2017
Brazil; Breeding; Crosses, Genetic; Fusarium; Genetic variation; Genotype; Multivariate analysis; Plant Diseases; Tracheophyta

The multivariate analyses are useful tools to estimate the genetic variability between accessions. In the breeding programs, the Ward-Modified Location Model (MLM) multivariate method has been a powerful strategy to quantify variability using quantitative and qualitative variables simultaneously. The present study was proposed in view of the dearth of information about popcorn breeding ... more

R.N.F. Kurosawa; A.T. do Amara Junior; F.H.L. Silva; D. Santos; M. Vivas; S.H. Kamphorst; G.F. Pena

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