Research Article

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11/03/2016
Abiotic stress; Agrostis stolonifera; AsACO; Ethylene biosynthesis

A gene encoding 1-aminocyclopropane-1-carboxylic oxidase (ACO), which catalyzes the terminal step in ethylene biosynthesis, was isolated from Agrostis stolonifera. The AsACO gene is composed of 975 bp, encoding 324 amino acids. Three exons interspersed by two introns form AsACO gDNA. A BLAST search of the nucleotide sequence revealed a ... more

G.Z. Xiao; L.J. Li; K. Teng; Y.H. Chao; L.B. Han; G.Z. Xiao; L.J. Li; K. Teng; Y.H. Chao; L.B. Han
11/03/2016
Artificial Intelligence; Genotype x environment interaction; Vigna unguiculata

Cowpea (Vigna unguiculata) is grown in three Brazilian regions: the Midwest, North, and Northeast, and is consumed by people on low incomes. It is important to investigate the genotype x environment (GE) interaction to provide accurate recommendations for farmers. The aim of this study was to identify cowpea genotypes with high adaptability and phenotypic ... more

L.M.A. Barroso; P.E. Teodoro; M. Nascimento; F.E. Torres; A.C.C. Nascimento; C.F. Azevedo; F.R.F. Teixeira; L.M.A. Barroso; P.E. Teodoro; M. Nascimento; F.E. Torres; A.C.C. Nascimento; C.F. Azevedo; F.R.F. Teixeira
11/21/2016
Cotton; Fiber; Predicted gains

Brazil is among the five largest producers of cotton in the world, cultivating the species Gossypium hirsutum L. r. latifolium Hutch. The cultivars should have good fiber quality as well as yield. Genetic improvement of fiber traits requires the study of the genetic structure of the populations under improvement, ... more

G.M.P. de Faria; C.F.B. Sanchez; L.P. de Carvalho; daSilva Oliveira; C.D. Cruz
11/21/2016
Amazon; Genetic variability; SSR marker

Forest fragmentation reduces the effective size of natural populations, isolates individuals in the landscape, and, consequently, changes species’ mating systems by increasing the degree of relatedness between individuals and inbreeding. Investigating the impact of habitat degradation on forest fragments helps to assess the genetic and ecological consequences of ... more

T.L. Varella; A.A.B. Rossi; J.F.E. Dardengo; G.F. Silveira; M.D.A. Souza; M.L.S. Carvalho
11/21/2016
Germplasm; Glycine max; Multivariate analysis; Plant introduction

Owing to the narrow genetic basis of soybean (Glycine max), the incorporation of new sources of germplasm is indispensable when searching for alleles that contribute to a greater diversity of varieties. The alternative is plant introduction, which may increase genetic variability within breeding programs. Multivariate techniques are important tools to ... more

M.B. Marconato; E.M. Pereira; F.M. Silva; E.H. Bizari; J.B. Pinheiro; A.O. Mauro; S.H. Unêda-Trevisoli; M.B. Marconato; E.M. Pereira; F.M. Silva; E.H. Bizari; J.B. Pinheiro; A.O. Mauro; S.H. Unêda-Trevisoli
11/21/2016
Coffea arabica; Genetic divergence; Multivariate analysis; Plant breeding

In a coffee plantation of a coffee ‘Acaiá’ cultivar (Coffea arabica), on the Midwest of Minas Gerais in Capitólio city, a different kind of coffee tree was found (1989), possibly due to a mutation. It presented larger leaves and grains than those of conventional coffee trees and was named as “Big Coffee VL.” The aim of this study was to estimate the ... more

J.A. Silva; S.P. Carvalho; A.T. Bruzi; R.J. Guimarães; L.L. Oliveira; L.C. Simões; J.A. Silva; S.P. Carvalho; A.T. Bruzi; R.J. Guimarães; L.L. Oliveira; L.C. Simões
11/21/2016
Calculating study sample size; Experimental precision; Sampling; Zea mays L.

Tassel traits are important in maize breeding programs aiming to reduce the size and number of branches and maintain satisfactory pollen production in order to increase grain yield. The objectives of this study were to determine the sample size (number of tassels) required to estimate the mean values for tassel traits in maize genotypes and to verify the ... more

C.A. Wartha; C. Filho; A.D. Lúcio; D.N. Follmann; J.A. Kleinpaul; F.M. Simões; C.A. Wartha; C. Filho; A.D. Lúcio; D.N. Follmann; J.A. Kleinpaul; F.M. Simões
11/21/2016
Genetic variability; Host resistance and pathogen aggression; Incubation environments; Inoculation; Plant breeding; White mold

Sclerotinia sclerotiorum is an important soybean pathogen. The objectives of this study were to evaluate levels of resistance of soybean genotypes to the fungus, and to determine the effects of different incubation environments on host resistance and pathogen aggressiveness. Two experiments were conducted using 103 genotypes from the seed collection of ... more

L.H.S. Castro; A.A. Figueiró; A.P.O. Nogueira; S.J. Clough; F.C. Juliatti; L.H.S. Castro; A.A. Figueiró; A.P.O. Nogueira; S.J. Clough; F.C. Juliatti
02/27/2018
Ligninolytic enzymes; Mycelial growth; Polyphenol oxidase; White-rot fungi

Fungus ability to respond to environmental changes allows their adaptation to a wide variety of conditions such as pH, temperature, light, nutrient availability, chemicals, and competition among species. Temperature and pH can affect fungal growth as well as their metabolism. Knowing these factors on fungus species is relevant for the development of ... more

R.A. Marim; K.V. Avelino; G.A. Linde; N.B. Colauto; J.S. Valle
05/20/2016
Expansion volume; Gain from selection; Recurrent selection

Popcorn is widely consumed in Brazil, yet there are few breeding programs for this crop. Recurrent selection (RS) is a viable breeding alternative for popcorn; however, the gains achieved must be frequently checked. The aim of this study was to assess the effect of selection for grain type (round and pointed) after four cycles of phenotypic RS on the main agronomic traits of popcorn, to ... more

H.J. Ematné; J.A.R. Nunes; K.O.G. Dias; P.E.R. Prado; J.C. Souza; H.J. Ematné; J.A.R. Nunes; K.O.G. Dias; P.E.R. Prado; J.C. Souza

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