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104. Seeding density in wheat: the more, the merrier?

Author

Valério, Igor Pirez, primary, Carvalho, Fernando Irajá Félix de, additional, Benin, Giovani, additional, Silveira, Gustavo da, additional, Silva, José Antonio Gonzalez da, additional, Nornberg, Rafael, additional, Hagemann, Thais, additional, Luche, Henrique de Souza, additional, and Oliveira, Antônio Costa de, additional

Published
2013
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108. Estimation of Missing Values Affects Important Aspects of GGE Biplot Analysis.

Author

Guilherme Woyann, Leomar, Benin, Giovani, Storck, Lindolfo, Trevizan, Diego Maciel, Meneguzzi, Cátia, Sergio Marchioro, Volmir, Tonatto, Matheus, and Madureira, Alana

Subjects
*GENES, *PRINCIPAL components analysis, *WHEAT
Abstract

Multi-environment trials often yield unbalanced datasets, thus necessitating the estimation of missing values. It is unknown whether this estimation affects the graphic characteristics of genotype plus genotype-by-environment interaction (GGE) biplots. Therefore, our objectives were to investigate the effects of different percentages of missing values on the number of significant principal components (PCs) and on mega environments, “winner” (highest-performing) genotypes, and the amount of variation explained by the PCs. Two complete sets of two-way data from wheat (Triticum aestivum L.) were used. The first set consisted of the original data (Data1, from which we created scenarios with 0, 30, and 60% missing data. For the second dataset (Data2), we removed 50% data from the original dataset, estimated missing values to make it a new complete dataset, and created scenarios like those for Data1. Missing values were estimated via expectation-maximization–GGE (EM–GGE) and EM–additive main effects and multiplicative interaction (EM–AMMI) methods. The percentage of variation explained by the PCs was affected by the percentage of missing data; a large percentage of missing values considerably increased the amount of variation explained by PC 1 and PC 2 and reduced the complexity of the genotype-by-environment interaction because two PCs accounted for more than 80% of the variation, instead of the three PCs that were required to explain the variation in the original dataset. The EM–GGE estimation method was able to maintain the original conformation of the ‘which-won-where’ biplot when ≤30% of estimated data were used. The EM–GGE was superior to the EM–AMMI method for estimating missing data. The estimation of more than 30% of the data should be avoided because it can lead to significant changes in mega environment conformation and the identification of “winner” genotypes. [ABSTRACT FROM AUTHOR]

Published
2017
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112. FAEM Carlasul: new white oat cultivar with high grain yield

Author

Oliveira, Antônio Costa de, primary, Carvalho, Fernando Irajá Félix de, additional, Maia, Luciano Carlos da, additional, Silva, José Antônio Gonzalez da, additional, Crestani, Maraisa, additional, Nornberg, Rafael, additional, Hartwig, Irineu, additional, and Benin, Giovani, additional

Published
2012
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115. Brisasul: a new high-yielding white oat cultivar with reduced lodging

Author

Oliveira, Antônio Costa de, primary, Crestani, Maraisa, additional, Carvalho, Fernando Irajá Félix de, additional, Silva, José Antonio Gonzalez da, additional, Valério, Igor Pirez, additional, Hartwig, Irineu, additional, Benin, Giovani, additional, Schmidt, Douglas André Mallmann, additional, and Bertan, Ivandro, additional

Published
2011
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124. Seeding density in wheat genotypes as a function of tillering potential

Author

Valério, Igor Pirez, primary, Carvalho, Fernando Irajá Félix de, additional, Oliveira, Antônio Costa de, additional, Benin, Giovani, additional, Souza, Velci Queiroz de, additional, Machado, Amauri de Almeida, additional, Bertan, Ivandro, additional, Busato, Cyrano Cardoso, additional, Silveira, Gustavo da, additional, and Fonseca, Daniel Andrei Rob, additional

Published
2009
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129. Association between genetic distances in wheat (Triticum aestivum L.) as estimated by AFLP and morphological markers

Author

Vieira, Eduardo Alano, primary, Carvalho, Fernando Irajá Félix de, additional, Bertan, Ivandro, additional, Kopp, Mauricio Marini, additional, Zimmer, Paulo Dejalma, additional, Benin, Giovani, additional, Silva, José Antônio Gonzalez da, additional, Hartwig, Irineu, additional, Malone, Gaspar, additional, and Oliveira, Antônio Costa de, additional

Published
2007
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130. Tolerância ao alumínio em cultivares de aveia branca sob cultivo hidropônico

Author

Silva, José Antonio Gonzalez da, primary, Carvalho, Fernando Irajá Félix de, additional, Coimbra, Jefferson Luís Meirelles, additional, Vieira, Eduardo Alano, additional, Benin, Giovani, additional, Oliveira, Antônio Costa de, additional, Finatto, Taciane, additional, Bertan, Ivandro, additional, Silva, Giovani Olegário da, additional, and Correa, Maicon Rubira, additional

Published
2007
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131. Correlação de acamamento com rendimento de grãos e outros caracteres de interesse agronômico em plantas de trigo

Author

Silva, José Antonio Gonzalez da, primary, Carvalho, Fernando Irajá Félix de, additional, Oliveira, Antonio Costa de, additional, Vieira, Eduardo Alano, additional, Benin, Giovani, additional, Valério, Igor Pires, additional, Carvalho, Marcos Fontoura, additional, Finatto, Taciane, additional, Busato, Cyrano Cardoso, additional, and Ribeiro, Guilherme, additional

Published
2006
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135. Métodos de semeadura na condução de populações segregantes de aveia e suas interações com o ambiente de seleção

Author

Marchioro, Volmir Sergio, primary, Carvalho, Fernando Irajá Félix de, additional, Oliveira, Antônio Costa de, additional, Lorencetti, Claudir, additional, Benin, Giovani, additional, Silva, José Antônio Gonzales da, additional, Hartwig, Irineu, additional, Schimidt, Douglas, additional, Cargnin, Adeliano, additional, and Simioni, Daniel, additional

Published
2005
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136. Adaptabilidade e estabilidade em aveia em ambientes estratificados

Author

Benin, Giovani, primary, Carvalho, Fernando Irajá Félix de, additional, Oliveira, Antônio Costa, additional, Lorencetti, Claudir, additional, Vieira, Eduardo Alano, additional, Coimbra, Jefferson Luís Meireles, additional, Valério, Igor Pires, additional, Floss, Elmar Luíz, additional, Bertan, Ivandro, additional, and Silva, Giovani Olegário da, additional

Published
2005
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139. Dissimilaridade genética entre genótipos de aveia

Author

Marchioro, Volmir Sergio, primary, Carvalho, Fernando Irajá Félix de, additional, Oliveira, Antônio Costa de, additional, Cruz, Pedro Jacinto, additional, Lorencetti, Claudir, additional, Benin, Giovani, additional, Silva, José Antônio Gonzales da, additional, and Schmidt, Douglas A. M., additional

Published
2003
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140. Estimation of Missing Values Affects Important Aspects of GGE Biplot Analysis

Author

Woyann, Leomar Guilherme, Benin, Giovani, Storck, Lindolfo, Trevizan, Diego Maciel, Meneguzzi, Cátia, Marchioro, Volmir Sergio, Tonatto, Matheus, and Madureira, Alana

Abstract

Multi-environment trials often yield unbalanced datasets, thus necessitating the estimation of missing values. It is unknown whether this estimation affects the graphic characteristics of genotype plus genotype-by-environment interaction (GGE) biplots. Therefore, our objectives were to investigate the effects of different percentages of missing values on the number of significant principal components (PCs) and on mega environments, “winner” (highest-performing) genotypes, and the amount of variation explained by the PCs. Two complete sets of two-way data from wheat (Triticum aestivumL.) were used. The first set consisted of the original data (Data1, from which we created scenarios with 0, 30, and 60% missing data. For the second dataset (Data2), we removed 50% data from the original dataset, estimated missing values to make it a new complete dataset, and created scenarios like those for Data1. Missing values were estimated via expectation-maximization–GGE (EM–GGE) and EM–additive main effects and multiplicative interaction (EM–AMMI) methods. The percentage of variation explained by the PCs was affected by the percentage of missing data; a large percentage of missing values considerably increased the amount of variation explained by PC 1 and PC 2 and reduced the complexity of the genotype-by-environment interaction because two PCs accounted for more than 80% of the variation, instead of the three PCs that were required to explain the variation in the original dataset. The EM–GGE estimation method was able to maintain the original conformation of the ‘which-won-where’ biplot when =30% of estimated data were used. The EM–GGE was superior to the EM–AMMI method for estimating missing data. The estimation of more than 30% of the data should be avoided because it can lead to significant changes in mega environment conformation and the identification of “winner” genotypes.

Published
2017
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141. Grain yield and baking quality of wheat under different sowing dates.

Author

Rossi Silva, Raphael, Benin, Giovani, de Almeida, Juliano Luiz, de Batista Fonseca, Inês Cristina, and Zucareli, Claudemir

Subjects
WHEAT quality, CROP yields, SOWING, WHEAT varieties, HARVESTING
Abstract

Copyright of Acta Scientiarum: Agronomy is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014
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142. Número ótimo de ensaios de competição de trigo em diferentes regiões de adaptação.

Author

Benin, Giovani, Storck, Lindolfo, Marchioro, Volmir Sérgio, de Assis Franco, Francisco, and Trevizan, Diego Maciel

Subjects
*GRAIN yields, *PLANT variety testing, *GRAIN farming, *GENOTYPE-environment interaction, WHEAT genetics
Abstract

The objective of this study was to determine the optimal number of tests required to predict the performance of grain yield of wheat genotypes in different regions of Value for Cultivation and Use (VCU), with a view to selecting and recommending cultivars. Grain yield data from 285 field trials at 31 locations in the VCU Regions 1, 2, 3 and 4 in 2007-2011 were used. There are differences among VCU regions with reference to the repeatability coefficient and the number of tests required for a predetermined accuracy. It was noted the need to raise the number of tests VCU regions 2 and 4 and reduce the number of trials in the regions of VCU 1 and 3. In regions VCU 1, 2, 3 and 4, to a level of 80% accuracy, are required 8, 14, 10 and 12 tests, respectively. [ABSTRACT FROM AUTHOR]

Published
2014

143. The use of photothermal quotient and frost risk to identify suitable sowing dates for wheat.

Author

Rossi Silva, Raphael, Benin, Giovani, Abramo Marchese, José, Borges da Silva, Éder David, and Sérgio Marchioro, Volmir

Subjects
SOWING, WHEAT, FROST damage to plants, EFFECT of temperature on plants, EFFECT of solar radiation on plants, PHOTOTHERMAL effect, CROP yields
Abstract

Copyright of Acta Scientiarum: Agronomy is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014
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144. GIRASSOL ORNAMENTAL: CARACTERIZAÇÃO, PÓS-COLHEITA E ESCALA DE SENESCÊNCIA.

Author

Curti, Gilberto Luiz, Martin, Thomas Newton, de Lurdes Ferronato, Marlene, and Benin, Giovani

Subjects
SUNFLOWERS, ORNAMENTAL plants, HARVESTING, BENCHMARKING (Management), MANAGEMENT
Abstract

Copyright of Revista de Ciências Agrárias is the property of Sociedade de Ciencias Agrarias de Portugal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2012

145. Fatores pré-colheita que afetam a qualidade tecnológica de trigo.

Author

de Franceschi, Lucia, Benin, Giovani, Guarienti, Eliana, Marchioro, Volmir Sérgio, and Martin, Thomas Newton

Subjects
*WHEAT, *INTERNATIONAL markets, *PRODUCT quality, *GENETICS, *FLOUR, *CROPS
Abstract

Technological performance represents an opportunity to add market value to wheat, especially considering international market and industrial sector which seek to achieve distinctive quality of their products. Genetic, metereological, and management factors are crucial to obtain the desired quality. With respect to the selection of an adequate cultivar, knowledge about the climatic limitations of the wheat-growing region and soil fertility, and accomplishing the management practices recommended by research can substantially contribute toward obtaining the physical, chemical, and biological characteristics that lend quality to flour and flour-based products, as discussed in this review. [ABSTRACT FROM AUTHOR]

Published
2009
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146. Characterization of brazilian wheat cultivars in terms of nitrogen use efficiency.

Author

da Silva, Cristiano Lemes, Benin, Giovani, Bornhofen, Elesandro, Todeschini, Matheus Henrique, Dallo, Samuel Cristian, and Scarparo Sassi, Luiz Henrique

Subjects
WHEAT varieties, NITROGEN, AGRICULTURE, NEAR infrared spectroscopy, PLANT proteins
Abstract

Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014
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147. Verificação da adaptabilidade e estabilidade de populações de cenoura pelos métodos AMMI, GGE biplot e REML/BLUP.

Author

da Silva, Giovani Olegario, de Carvalho, Agnaldo Donizete Ferreira, Vieira, Jairo Vidal, and Benin, Giovani

Subjects
CARROTS, DAUCUS, MULTIVARIATE analysis, GENOTYPE-environment interaction, ECOLOGICAL genetics
Abstract

Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2011
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148. MÉTODOS PARA ANÁLISE DE ADAPTABILIDADE E ESTABILIDADE EM CULTIVARES DE TRIGO NO ESTADO DO PARANÁ.

Author

DE FRANCESCHI, LUCIA, BENIN, GIOVANI, MARCHIORO, VOLMIR SÉRGIO, MARTIN, THOMAS NEWTON, SILVA, RAPHAEL ROSSI, and DA SILVA, CRISTIANO LEMES

Subjects
WHEAT, CULTIVARS, GENOTYPE-environment interaction, CROP yields
Abstract

Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2010
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149. EFEITO DA DENSIDADE DE SEMEADURA E POTENCIAL DE AFILHAMENTO SOBRE A ADAPTABILIDADE E ESTABILIDADE EM TRIGO.

Author

DA SILVEIRA, GUSTAVO, FÉLIX DE CARVALHO, FERNANDO IRAJÁ, DE OLIVEIRA, ANTÔNIO COSTA, VALÉRIO, IGOR PIREZ, BENIN, GIOVANI, RIBEIRO, GUILHERME, CRESTANI, MARAISA, LUCHE, HENRIQUE DE SOUZA, and GONZALES DA SILVA, JOSÉ ANTONIO

Subjects
WHEAT, GENETIC polymorphisms, PLANT genetics, GRAIN, SOWING, SEEDS
Abstract

Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2010
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150. Correlation of lodging with grain yield and other agronomically important traits in wheat plants

Author

Gonzalez Da Silva, Jose Antonio, Felix Carvalho, Fernando Iraja, Oliveira, Antonio Costa, Vieira, Eduardo Alano, Benin, Giovani, Valerio, Igor Pires, Carvalho, Marcos Fontoura, Taciane Finatto, Busato, Cyrano Cardoso, and Ribeiro, Guilherme

Subjects
indirect selection, melhoramento de plantas, plant breeding, path analysis, análise de trilha, seleção indireta, Triticum aestivum L
Abstract

A seleção indireta visando ao incremento no rendimento de grãos pelos seus componentes primários bem como a resistência ao acamamento podem representar estratégias eficientes a serem adotadas para otimização do ganho genético em trigo. Nesse sentido, o objetivo do trabalho foi evidenciar caracteres que possibilitem identificar genótipos de elevado rendimento de grãos e resistentes ao acamamento através de seleção indireta. O experimento foi conduzido no Centro Agropecuário da Palma, em Capão do Leão/RS, utilizando dezenove genótipos de trigo em delineamento de blocos ao acaso, com três repetições. Nas condições deste estudo, o peso hectolítrico pode ser empregado de maneira eficiente na seleção indireta, visando ao incremento no rendimento de grãos, no peso médio de grãos, número de grãos por espiga e no peso de espiga. O caráter peso de espiga evidenciou elevado efeito indireto sobre o rendimento de grãos, podendo ser empregado na seleção indireta pela facilidade de mensuração. A linhagem TB 951 é indicada como excelente fonte de resistência ao acamamento em trigo, podendo contribuir para elevar o comprimento de espiga, o número de espigueta por espiga, o peso de espiga e o número de grãos por espiga. The selection in yield primary components and lodging resistance with goal of increasing grain yield can represent efficient strategies for optimizing genetic gain in wheat. In this sense, the objective of the present work was to detect characters that enable the identification of high grain yield potential and lodging resistant genotypes through the use of indirect selection. The experiment was conducted at the Centro Agropecuário da Palma, Capão do Leão/RS, consisting of nineteen wheat genotypes arranged in random block design with three replications. In this work conditions the hectoliter weight can be efficiently used through indirect selection aiming increasing grain yield, average grain weight, number of grains per ear and ear weight. The character ear weight showed high indirect effect on grain yield and can be used for indirect selection due to its ease of measurement. The line TB 951 is indicated as an excellent source for lodging resistance in wheat, and can contribute to increase ear length, number of spikelets per ear, ear weigh and number of grain per ear.

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