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1.
Acta sci., Biol. sci ; 45: e63349, 2023. graf, tab
Artigo em Inglês | VETINDEX | ID: biblio-1509450

Resumo

The identification of promising commercial varieties for irrigated crops in semiarid conditions based on characters of interest to sugarcane agro-industries is important, considering the search for high sugarcane yields to obtain sustainable crops. Thus, the objective of this work was to evaluate production components of agroindustrial interest of different sugarcane varieties grown under subsurface drip irrigation in the Semiarid region of Brazil, during two crop cycles. A randomized block experimental design was used, in an 8×2 factorial arrangement (varieties and cycles) with three replications. The sugarcane juice quality, sugar yield, and culm yield were evaluated in each cycle. Gross sugar percentage, sugarcane culm yield, juice apparent sucrose content, and juice purity were affected by the crop cycles. Soluble solids content presented strong significant correlation with most variables of agroindustrial interest. The path coefficient analysis showed that juice apparent sucrose content was the explanatory character with higher direct effect on soluble solids and that this variable presented high indirect effects on most explanatory variables. The sugarcane varieties RB72454 and Q124 are recommended for production managements with drip irrigation under semiarid conditions. Soluble solids content can be used as an alternative for direct selection of varieties with higher sugar yields in different cycles.(AU)


Assuntos
Avaliação da Tecnologia Biomédica/métodos , Saccharum/fisiologia , Irrigação por Gotejamento , Zona Semiárida , Agroindústria
2.
Colloq. agrar. ; 15(5): 42-56, set.-out. 2019. tab, graf
Artigo em Português | VETINDEX | ID: vti-23979

Resumo

Uma grande vantagem do sorgo é sua característica xerófita, o que lhe atribui um potencial, como sucessão às culturas de verão, na produção de grãos, sendo fundamental a utilização de híbridos adaptados aos diferentes ambientes de cultivo. Assim, o objetivo deste trabalho foi gerar parâmetros a respeito da capacidade adaptativa de híbridos de sorgo granífero pelo método GGE biplot. Os ensaios foram conduzidos, na safrinha de 2017, em sistema de plantio direto, em quatro ambientes, Rio Verde, Sete Lagoas, Teresina e Sinop. Todos os ensaios foram conduzidos, no delineamento em blocos casualizados, com três repetições e trinta e seis híbridos. Foram avaliadas as características: florescimento, altura de plantas e produtividade de grãos. Os dados foram submetidos às análises de variância individuais e conjunta, aplicado posteriormente o critério de agrupamento de Scott-Knott e estimados os parâmetros de adaptabilidade e estabilidade. Os híbridos promissores quanto às características avaliadas e em função dos parâmetros de adaptabilidade e estabilidade foram 1610001, 1610006, 1610051 e o 1G100.(AU)


A great advantage of sorghum it its xerophytic characteristics, which gives the potential, as a succession to summer crops in grain production. Therefore, it is fundamental to choose cultivars adapted and productive to different growing conditions. The objective of this study was to provide information about adaptive capacity of sorghum hybrids by the GGE biplot method. The trials were conducted, in 2017 as a second crop, no-tillage system, in four environments: Rio Verde, Sete Lagoas, Teresina and Sinop. All trials were conducted in a randomized complete block design with three replicates and thirty-six hybrids. The characteristics of flowering, plant height and grain yield were evaluated. It was realized individual and joint analyses of variance, after applied Scott-Knott grouping criterion and estimated the parameters of adaptability and stability. Promising hybrids for the characteristics evaluated and according to the adaptability and stability parameters were 1610001, 1610006, 1610051 and 1G100.(AU)


Assuntos
24444 , Sorghum/crescimento & desenvolvimento , Melhoramento Vegetal
3.
Colloq. Agrar ; 15(5): 42-56, set.-out. 2019. tab, graf
Artigo em Português | VETINDEX | ID: biblio-1481517

Resumo

Uma grande vantagem do sorgo é sua característica xerófita, o que lhe atribui um potencial, como sucessão às culturas de verão, na produção de grãos, sendo fundamental a utilização de híbridos adaptados aos diferentes ambientes de cultivo. Assim, o objetivo deste trabalho foi gerar parâmetros a respeito da capacidade adaptativa de híbridos de sorgo granífero pelo método GGE biplot. Os ensaios foram conduzidos, na safrinha de 2017, em sistema de plantio direto, em quatro ambientes, Rio Verde, Sete Lagoas, Teresina e Sinop. Todos os ensaios foram conduzidos, no delineamento em blocos casualizados, com três repetições e trinta e seis híbridos. Foram avaliadas as características: florescimento, altura de plantas e produtividade de grãos. Os dados foram submetidos às análises de variância individuais e conjunta, aplicado posteriormente o critério de agrupamento de Scott-Knott e estimados os parâmetros de adaptabilidade e estabilidade. Os híbridos promissores quanto às características avaliadas e em função dos parâmetros de adaptabilidade e estabilidade foram 1610001, 1610006, 1610051 e o 1G100.


A great advantage of sorghum it its xerophytic characteristics, which gives the potential, as a succession to summer crops in grain production. Therefore, it is fundamental to choose cultivars adapted and productive to different growing conditions. The objective of this study was to provide information about adaptive capacity of sorghum hybrids by the GGE biplot method. The trials were conducted, in 2017 as a second crop, no-tillage system, in four environments: Rio Verde, Sete Lagoas, Teresina and Sinop. All trials were conducted in a randomized complete block design with three replicates and thirty-six hybrids. The characteristics of flowering, plant height and grain yield were evaluated. It was realized individual and joint analyses of variance, after applied Scott-Knott grouping criterion and estimated the parameters of adaptability and stability. Promising hybrids for the characteristics evaluated and according to the adaptability and stability parameters were 1610001, 1610006, 1610051 and 1G100.


Assuntos
24444 , Melhoramento Vegetal , Sorghum/crescimento & desenvolvimento
4.
Sci. agric ; 71(2): 146-150, Mar-Abr. 2014. tab
Artigo em Inglês | VETINDEX | ID: biblio-1497396

Resumo

When it comes to recommending sorghum (Sorghum bicolor) cultivars, it is essential to carry out a genetic evaluation of the agronomic traits of promising genotypes from several common environments where the crop is cultivated. This study consisted of a genetic evaluation of 52 experimental grain sorghum hybrids and eight commercial cultivars. Hybrids were evaluated in 19 experiments representing the most varied cultivation conditions in Brazil. Traits of agronomic interest such as grain yield, flowering and plant height were analysed. Genotypic evaluation was performed following the REML/BLUP (Restricted Maximum Likelihood/Best Linear Unbiased Predictor) procedure; the MHPRVG (Harmonic Mean of Relative Performance of Genotypic Values) method was also employed to study stability and adaptability. Hybrids which stood out in terms of highest grain yield based on genotypic values, stability and adaptability were 0306037, 1G150, DKB 599, 0306039, 1G282 and 0307671. Of these, only 1G282 showed restrictions as to plant height. For flowering, experimental hybrids showed shorter cycles than commercial cultivars, confirming the efficiency of genetic improvement for this trait. With the analysis of grain yield considering days to flowering and plant height as covariates, it was observed that most of the hybrids of greater performance, showed grain yield to be positively influenced by plant height and days to flowering.


Assuntos
Funções Verossimilhança , Hibridização Genética , Sorghum/genética
5.
Bol. ind. anim. (Impr.) ; 71(1): 63-70, 2014.
Artigo em Português | VETINDEX | ID: biblio-1466655

Resumo

Devido ao grande potencial de produção de biomassa do capim elefante, objetivou-se neste trabalho avaliar genitores para geração de híbridos superiores. Para tanto, foram estimados os efeitos da capacidade geral de combinação (CGC) dos genitores e da capacidade específica de combinação (CEC) de híbridos de capim elefante por meio de análise dialélica adaptada a dialelos parciais. Foram avaliados 16 híbridos e oito genitores utilizando delineamento em blocos casualizados com três repetições. Verificou-se a presença de variabilidade genética entre os híbridos e genitores, com predominância do efeito gênico de dominância para a maioria das características. De forma geral, os melhores resultados na CGC são os genitores Taiwan A-144, Vruckwona Africana e Taiwan A-146. Os melhores cruzamentos com base na CEC são Taiwan A-144 x Taiwan A-146 e Pusa Napier nº2 x Mercker Santa Rita.


Because of the potential for biomass production of elephant grass, the aim of this study was to evaluate parents to obtain superior hybrids. Effects of general combining ability (GCA) of the parents and specific combining ability (SCA) of hybrids elephant grass through diallel analysis adapted to partial diallel were estimated. Sixteen hybrids and eight parents were evaluated using a randomized block design with three replications. We verified the presence of genetic variability among hybrids and parents, with a predominance of dominance gene effect for most characteristics. Overall, the best results in the GCA are the parents Taiwan A-144, Vruckwona Africana and Taiwan A-146. The best intersections based on SCA are Taiwan A-144 x Taiwan A-146 and Pusa Napier nº2 x Mercker Santa Rita.


Assuntos
Animais , Agricultura , Biomassa , Pennisetum
6.
Bol. ind. anim. (Impr.) ; 71(3): 241-249, 2014.
Artigo em Português | VETINDEX | ID: biblio-1466683

Resumo

Objetivou-se estimar os efeitos da capacidade geral de combinação (CGC) dos genitores e capacidade específica de combinação (CEC) dos híbridos de capim elefante por meio de análise dialélica adaptada a dialelos parciais, com base em caracteres bromatológicos. Foram avaliados 16 combinações híbridas e oito genitores no delineamento experimental de blocos casualizados com três repetições. No estudo foram consideradas as percentagens de matéria seca (%MS), cinzas (%CIN), proteína bruta (%PB) e fibra em detergente neutro (FDN). Concluiu-se que houve diferença significativa entre os genótipos para as características avaliadas, com predominância de efeito gênico de dominância. Com base na CGC, os melhores genitores foram Taiwan A-144, Vruckwona Africana e Taiwan A-146. Os melhores cruzamentos, com base na CEC foram Taiwan A-144 x Taiwan A-146, Vruckwona Africana x Taiwan A-146, Vruckwona Africana x Mercker S.E.A., Vruckwona Africana x Napier nº2 e Pusa Napier nº2 x Mercker Santa Rita.


The objective of the work was to evaluate the effects of general combining ability (CGC) of the parents and specific combining ability (CEC) in the elephant grass hybrids by diallel analysis adapted to partial diallel crosses based on nutritional characters. Sixteen hybrids and eight parents in a randomized block design with three replications were evaluated. The study considered percentage of dry matter (%DM), ash (%ASH), crude protein (%CP) and neutral detergent fiber (NDF). There were significant differences among genotypes for the traits evaluated, with a predominance of dominance gene effect. Based on CGC, the best parents were Taiwan A-144, Vruckwona Africana e Taiwan A-146. The best intersections based on CEC were Taiwan A-144 x Taiwan A-146, Vruckwona Africana x Taiwan A-146, Vruckwona Africana x Mercker S.E.A., Vruckwona Africana x Napier nº2 e Pusa Napier nº2 x Mercker Santa Rita.


Assuntos
Animais , Análise de Alimentos/métodos , Criação de Animais Domésticos , Genótipo
7.
Sci. Agric. ; 71(2): 146-150, Mar-Abr. 2014. tab
Artigo em Inglês | VETINDEX | ID: vti-27514

Resumo

When it comes to recommending sorghum (Sorghum bicolor) cultivars, it is essential to carry out a genetic evaluation of the agronomic traits of promising genotypes from several common environments where the crop is cultivated. This study consisted of a genetic evaluation of 52 experimental grain sorghum hybrids and eight commercial cultivars. Hybrids were evaluated in 19 experiments representing the most varied cultivation conditions in Brazil. Traits of agronomic interest such as grain yield, flowering and plant height were analysed. Genotypic evaluation was performed following the REML/BLUP (Restricted Maximum Likelihood/Best Linear Unbiased Predictor) procedure; the MHPRVG (Harmonic Mean of Relative Performance of Genotypic Values) method was also employed to study stability and adaptability. Hybrids which stood out in terms of highest grain yield based on genotypic values, stability and adaptability were 0306037, 1G150, DKB 599, 0306039, 1G282 and 0307671. Of these, only 1G282 showed restrictions as to plant height. For flowering, experimental hybrids showed shorter cycles than commercial cultivars, confirming the efficiency of genetic improvement for this trait. With the analysis of grain yield considering days to flowering and plant height as covariates, it was observed that most of the hybrids of greater performance, showed grain yield to be positively influenced by plant height and days to flowering.(AU)


Assuntos
Sorghum/genética , Hibridização Genética , Funções Verossimilhança
8.
B. Indústr. Anim. ; 71(1): 63-70, 2014.
Artigo em Português | VETINDEX | ID: vti-11401

Resumo

Devido ao grande potencial de produção de biomassa do capim elefante, objetivou-se neste trabalho avaliar genitores para geração de híbridos superiores. Para tanto, foram estimados os efeitos da capacidade geral de combinação (CGC) dos genitores e da capacidade específica de combinação (CEC) de híbridos de capim elefante por meio de análise dialélica adaptada a dialelos parciais. Foram avaliados 16 híbridos e oito genitores utilizando delineamento em blocos casualizados com três repetições. Verificou-se a presença de variabilidade genética entre os híbridos e genitores, com predominância do efeito gênico de dominância para a maioria das características. De forma geral, os melhores resultados na CGC são os genitores Taiwan A-144, Vruckwona Africana e Taiwan A-146. Os melhores cruzamentos com base na CEC são Taiwan A-144 x Taiwan A-146 e Pusa Napier nº2 x Mercker Santa Rita.(AU)


Because of the potential for biomass production of elephant grass, the aim of this study was to evaluate parents to obtain superior hybrids. Effects of general combining ability (GCA) of the parents and specific combining ability (SCA) of hybrids elephant grass through diallel analysis adapted to partial diallel were estimated. Sixteen hybrids and eight parents were evaluated using a randomized block design with three replications. We verified the presence of genetic variability among hybrids and parents, with a predominance of dominance gene effect for most characteristics. Overall, the best results in the GCA are the parents Taiwan A-144, Vruckwona Africana and Taiwan A-146. The best intersections based on SCA are Taiwan A-144 x Taiwan A-146 and Pusa Napier nº2 x Mercker Santa Rita.(AU)


Assuntos
Animais , Pennisetum , Biomassa , Agricultura
9.
B. Indústr. Anim. ; 71(3): 241-249, 2014.
Artigo em Português | VETINDEX | ID: vti-11279

Resumo

Objetivou-se estimar os efeitos da capacidade geral de combinação (CGC) dos genitores e capacidade específica de combinação (CEC) dos híbridos de capim elefante por meio de análise dialélica adaptada a dialelos parciais, com base em caracteres bromatológicos. Foram avaliados 16 combinações híbridas e oito genitores no delineamento experimental de blocos casualizados com três repetições. No estudo foram consideradas as percentagens de matéria seca (%MS), cinzas (%CIN), proteína bruta (%PB) e fibra em detergente neutro (FDN). Concluiu-se que houve diferença significativa entre os genótipos para as características avaliadas, com predominância de efeito gênico de dominância. Com base na CGC, os melhores genitores foram Taiwan A-144, Vruckwona Africana e Taiwan A-146. Os melhores cruzamentos, com base na CEC foram Taiwan A-144 x Taiwan A-146, Vruckwona Africana x Taiwan A-146, Vruckwona Africana x Mercker S.E.A., Vruckwona Africana x Napier nº2 e Pusa Napier nº2 x Mercker Santa Rita.(AU)


The objective of the work was to evaluate the effects of general combining ability (CGC) of the parents and specific combining ability (CEC) in the elephant grass hybrids by diallel analysis adapted to partial diallel crosses based on nutritional characters. Sixteen hybrids and eight parents in a randomized block design with three replications were evaluated. The study considered percentage of dry matter (%DM), ash (%ASH), crude protein (%CP) and neutral detergent fiber (NDF). There were significant differences among genotypes for the traits evaluated, with a predominance of dominance gene effect. Based on CGC, the best parents were Taiwan A-144, Vruckwona Africana e Taiwan A-146. The best intersections based on CEC were Taiwan A-144 x Taiwan A-146, Vruckwona Africana x Taiwan A-146, Vruckwona Africana x Mercker S.E.A., Vruckwona Africana x Napier nº2 e Pusa Napier nº2 x Mercker Santa Rita.(AU)


Assuntos
Animais , Análise de Alimentos/métodos , Genótipo , Criação de Animais Domésticos
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