Genetic parameters and productivity of quinoa in Western Parana State, Brazil/Parametros geneticos e produtividade de quinoa no oeste do Estado do Parana, Brasil

Quinoa has been gaining attention because of its nutritional quality, low cholesterol and lack of gluten; in Brazil, the cultivation efforts in the different regions are mainly related to breeding. This study aimed to determine the genetic parameters and evaluate the productivity of the different ge...

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Published inActa scientiarum. Agronomy Vol. 38; no. 2; p. 185
Main Authors de Vasconcelos, Edmar Soares, Hoepers, Livia Maria Lemos, Amaral, Rafaela Goularte, Egewarth, Vanessa Aline, Strenske, Andressa
Format Journal Article
LanguageSpanish
Published Universidade Estadual de Maringa 01.04.2016
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Abstract Quinoa has been gaining attention because of its nutritional quality, low cholesterol and lack of gluten; in Brazil, the cultivation efforts in the different regions are mainly related to breeding. This study aimed to determine the genetic parameters and evaluate the productivity of the different genotypes of quinoa for detecting genotypes amenable to selection. The experiment was conducted in crop years 2010/11 and 2011/12 in environment 1 and environment 2, respectively. In environment 1, the evaluation of 61 genotypes was performed, and in environment 2, 31 genotypes were evaluated. The experimental design was a randomized block with two replications; each plot measured 2.0 x 5.0 m (10 [m.sup.2]) and consisted of four rows spaced at 0.45 m. Data collected on the productivity, plant height at maturation and growth cycle were analyzed using an analysis of variance, average tests and estimates of the genetic parameters. The genotypes N24 and N08 were the only genotypes more productive than the other 46 genotypes, with values of productivity of 1,446.23 and 1,428.93 kg [ha.sup.-1] and with a growth cycle of 117 and 111 days, respectively. The heritability values determined demonstrate the possibility of genetic gain using joint selection that involves two environments. Keywords: Chenopodium quinoa, genotypic selection, agronomic performance. A quinoa possui destaque devido a sua qualidade nutricional, baixo colesterol e ausencia de gluten; no Brasil, os esforcos em seu cultivo, nas diferentes regioes, estao relacionados principalmente ao melhoramento. O presente trabalho objetivou determinar os parametros geneticos e avaliar a produtividade de diferentes genotipos de quinoa com o proposito de detectar genotipos passiveis de selecao. O experimento foi realizado nos anos agricolas de 2010/11 e 2011/12, caracterizando ambientes 1 e 2, respectivamente. Dentro do ambiente 1, realizou-se a avaliacao de 61 genotipos, no ambiente 2, foram avaliados 31 genotipos. O delineamento experimental adotado foi o de blocos casualizados com duas repeticoes, cada parcela medindo 2,0 x 5,0 m (10 [m.sup.2]) sendo constituida de quatro linhas espacadas de 0,45 m. Com os dados de produtividade, altura de plantas na maturacao e ciclo, foram realizadas analise de variancia, teste de media e estimado os parametros geneticos. Os genotipos N24 e N08 foram os unicos a superar a produtividade de outros 46 genotipos, apresentando valores de produtividade de 1.446,23 e 1.428,93 kg [ha.sup.-1], com ciclo de 117 e 111 dias, respectivamente. Os valores de herdabilidade determinados demonstram a possibilidade de ganho genetico com a selecao conjunta, envolvendo os dois ambientes. Palavras-chave: Chenopodium quinoa, selecao de genotipos, desempenho agronomico.
AbstractList Quinoa has been gaining attention because of its nutritional quality, low cholesterol and lack of gluten; in Brazil, the cultivation efforts in the different regions are mainly related to breeding. This study aimed to determine the genetic parameters and evaluate the productivity of the different genotypes of quinoa for detecting genotypes amenable to selection. The experiment was conducted in crop years 2010/11 and 2011/12 in environment 1 and environment 2, respectively. In environment 1, the evaluation of 61 genotypes was performed, and in environment 2, 31 genotypes were evaluated. The experimental design was a randomized block with two replications; each plot measured 2.0 x 5.0 m (10 [m.sup.2]) and consisted of four rows spaced at 0.45 m. Data collected on the productivity, plant height at maturation and growth cycle were analyzed using an analysis of variance, average tests and estimates of the genetic parameters. The genotypes N24 and N08 were the only genotypes more productive than the other 46 genotypes, with values of productivity of 1,446.23 and 1,428.93 kg [ha.sup.-1] and with a growth cycle of 117 and 111 days, respectively. The heritability values determined demonstrate the possibility of genetic gain using joint selection that involves two environments. Keywords: Chenopodium quinoa, genotypic selection, agronomic performance. A quinoa possui destaque devido a sua qualidade nutricional, baixo colesterol e ausencia de gluten; no Brasil, os esforcos em seu cultivo, nas diferentes regioes, estao relacionados principalmente ao melhoramento. O presente trabalho objetivou determinar os parametros geneticos e avaliar a produtividade de diferentes genotipos de quinoa com o proposito de detectar genotipos passiveis de selecao. O experimento foi realizado nos anos agricolas de 2010/11 e 2011/12, caracterizando ambientes 1 e 2, respectivamente. Dentro do ambiente 1, realizou-se a avaliacao de 61 genotipos, no ambiente 2, foram avaliados 31 genotipos. O delineamento experimental adotado foi o de blocos casualizados com duas repeticoes, cada parcela medindo 2,0 x 5,0 m (10 [m.sup.2]) sendo constituida de quatro linhas espacadas de 0,45 m. Com os dados de produtividade, altura de plantas na maturacao e ciclo, foram realizadas analise de variancia, teste de media e estimado os parametros geneticos. Os genotipos N24 e N08 foram os unicos a superar a produtividade de outros 46 genotipos, apresentando valores de produtividade de 1.446,23 e 1.428,93 kg [ha.sup.-1], com ciclo de 117 e 111 dias, respectivamente. Os valores de herdabilidade determinados demonstram a possibilidade de ganho genetico com a selecao conjunta, envolvendo os dois ambientes. Palavras-chave: Chenopodium quinoa, selecao de genotipos, desempenho agronomico.
Quinoa has been gaining attention because of its nutritional quality, low cholesterol and lack of gluten; in Brazil, the cultivation efforts in the different regions are mainly related to breeding. This study aimed to determine the genetic parameters and evaluate the productivity of the different genotypes of quinoa for detecting genotypes amenable to selection. The experiment was conducted in crop years 2010/11 and 2011/12 in environment 1 and environment 2, respectively. In environment 1, the evaluation of 61 genotypes was performed, and in environment 2, 31 genotypes were evaluated. The experimental design was a randomized block with two replications; each plot measured 2.0 x 5.0 m (10 [m.sup.2]) and consisted of four rows spaced at 0.45 m. Data collected on the productivity, plant height at maturation and growth cycle were analyzed using an analysis of variance, average tests and estimates of the genetic parameters. The genotypes N24 and N08 were the only genotypes more productive than the other 46 genotypes, with values of productivity of 1,446.23 and 1,428.93 kg [ha.sup.-1] and with a growth cycle of 117 and 111 days, respectively. The heritability values determined demonstrate the possibility of genetic gain using joint selection that involves two environments.
Audience Academic
Author Strenske, Andressa
Egewarth, Vanessa Aline
de Vasconcelos, Edmar Soares
Amaral, Rafaela Goularte
Hoepers, Livia Maria Lemos
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