Research Article

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07/29/2021
Meteorological condition; Regression; Succession systems; Sustainability; Triticum aestivum

The management of nitrogen in wheat based on biological and environmental indicators can ensure productivity with a reduction in environmental impact. The objective of the study was to develop a more sustainable management of nitrogen use in wheat, considering the dose as a fraction of the total supply based on an estimate of the maximum technical and economic ... more

A.P.B. Trautmann; J.A.G. Da Silva; J.A. da Rosa; I.R. Carvalho; F. Lautenchleger; C.F. Colet; M.S. Jung; E. Warmbier; N.C.F. Basso; A.K. Polanczyk; C.V. Argenta
11/30/2021
Agricultural security; Nitrogen fertilizer; Triticum aestivum

The application in a single or split dose of nitrogen in wheat affects the expression of ear components. Models that simulate these effects can help predict yield. Our objective was to identify wheat ear components that are responsive to the forms of nitrogen supply in a single versus split dose d. This was achieved by testing variables in the construction of a ... more

O. Alessi; J.A.G. Da Silva; V. Pansera; J.A. da Rosa; I.R. Carvalho; F. Lautenchleger; M.S. Jung; deF. Colet; C.A.M.B. Teixeira; N.C.F. Basso; J.V. Tisott; C.M. Babeski
03/30/2022
C/N; Correlation and Path Analysis; N-dose; N-fraction; Triticum aestivum

Nitrogen management distinctly influences the expression and magnitude of relationships between wheat ear components and grain yield. We sought to determine the variables linked to wheat ear that are more responsive to changes in the dose and form of nitrogen supply and to determine the direct and indirect effects on grain yield by single and fractional nitrogen ... more

V. Pansera; J.A.G. Da Silva; O. Alessi; N.C.F. Basso; O.A. Lucchese; C.L. Peter; M.S. Jung; I.R. Carvalho; C.M. Babeski; N.G. Zardin; L.B. Heusner
05/31/2022
Agronomic traits; Heat; Plant breeding; Plant yield; Sowing dates; Triticum aestivum

Wheat is considered a basic cereal for civilization with great economic importance for world agriculture. Currently, wheat is planted in the south, southeast and midwest regions of Brazil. Brazilian consumption of wheat will grow in the coming years due to population increase, which will require developing new cultivars for non-tradtional regions. We investigated ... more

G.H. Bevilacqua; A.P. Neto; B.H.P. Val; C.V.G. Azevedo; J.S. Sobrinho; P.H.S. Libório; WdeS. Leite; S.H. Unêda-Trevisoli
07/17/2015
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

S.I.C. Carvalho; C.F. Ragassi; I.B. Oliveira; Z.P.S. Amaral; F.J.B. Reifschneider; F.G. Faleiro; G.S.C. Buso
10/27/2015
Androgenesis; Breeding; Bud morphology; Culture Media; Genotypes

The aim of this study was to relate flower bud size with microspore developmental stages and the induction of embryos in the anthers of different ornamental pepper (Capsicum annuum L.) genotypes. Flower buds were randomly collected and visually divided into three classes based on both petal and sepal size. The length and diameter of the bud as well as the length of the petal, ... more

P.A. Barroso; M.M. Rêgo; E.R. Rêgo; W.S. Soares
05/06/2016
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
11/21/2016
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
Animal Shells; Animals; Bivalvia; Breeding; Evolution, Molecular; Female; Fresh Water; Genetic variation; Genetics, Population; male; Microsatellite Repeats; Phenotype; Phylogeny; Quantitative trait loci

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
Animals; Avian Proteins; Body weight; Breeding; Chickens; Female; Gene expression; Gene Expression Regulation; male; Muscle development; Myostatin; Organ Specificity; Phenotype; Quantitative trait loci

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

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