Agronomic performance of quinoa selected in the Brazilian Savannah

Spehar, Carlos Roberto; Santos, Roberto Lorena de Barros

doi:10.1590/s0100-204x2005000600012

Cited by 37 publications

(31 citation statements)

References 4 publications

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“…Szilagyi and Jornsgard (2014) reported that the high and low harvest index values are related to the early and late maturity of quinoa genotypes where they found that early maturity genotypes recorded a higher harvest index than late maturity genotypes. Also, low values of harvest index for late and high values for early maturity genotypes supported similar findings by Spehar and de Barros Santos (2005). It seems that improvement of HI of quinoa seed yield is related to various factors rather than N fertilization such as genotypic and abiotic variations.…”

Section: Rersults and Discussionsupporting

confidence: 79%

Response of Quinoa (Chenopodium quinoa Willd) Plant to Nitrogen Fertilization and Irrigation by Saline Water

2017

Alexandria Science Exchange Journal: An International Quarterly

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The response of quinoa (Chenopodium quinoa Willd.) grown under salinity stress of irrigation water to nitrogen fertilization for improving yield production and quality was investigated. In plots experiment, application of 0 (N0), 14.28 (N1) and 28.56 (N2) g N m -2 as ammonium sulfate to quinoa (cultivar Regalona) sown in claytextured soil and irrigated by water of 0.65, 10 and 20 dS m -1 was studied. The results showed that application of nitrogen improved both biomass and seed yield. Nitrogen fertilization at rates of 14.28 and 28.56 g m -2 increased the yield of biomass by about 33.5 and 60% more than the control under fresh and 10 dS m -1 saline water irrigation. Under irrigation with 20 dS m -1 , N application by corresponded rates increased the biomass by 57 and 100%, respectively. Similar results were obtained with seed yield. Results of N content in seed and hay indicated that, under non-saline conditions, N content increased by 7.9 and 39.7% in hay and 15.9 and 36.8% in seeds over the control when the plant fertilized by 14.28 and 28.56 g N m -2 , respectively. Seed-N decreased by about 17.0, 5.2 and 8.0% in the plants irrigated with water of 10 dS m -1 and treated by N0, N1 and N2, respectively, whereas irrigation with 20 dS m -1 water decreased seed-N by 26.4, 10.4 and 17.7% in plants fertilized by N0, N1 and N2 respectively. Under nonsaline conditions, nitrogen utilization efficiency (NUtE) decreased from 55.1 to 47.5 and 40.3 kg seed kg -1 N in plants treated byN0, N1and N2. Similar trends were observed in the plants irrigated by higher levels of water salinity. The results indicated that quinoa hay yield responded to N application more than seed yield response. In N0-treated plants, NUtE increased from 55.1 to 66.2 and 74.7 kg seed/kg N in plants irrigated by water of 0.65, 10 and 20 dS m -1 , respectively. N fertilization with N1 and N2 did not influence Na and improved K content in the hay of plants irrigated by saline water (10 and 20 dS m -1 ). The use of quinoa hay as ruminant feed was supported by the results of both organic material content and high levels of crude protein as comparing to clover hay. However, the low percent of ether extract and higher percents of ADF and NDF lowered its quality. Therefore, it could be strong feed supplement for ruminants.

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Section: Rersults and Discussionsupporting

confidence: 79%

Response of Quinoa (Chenopodium quinoa Willd) Plant to Nitrogen Fertilization and Irrigation by Saline Water

2017

Alexandria Science Exchange Journal: An International Quarterly

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“…Selection of progeny per panicle has been the initial procedure in the improvement of quinoa and utilized in the acquisition of pioneer varieties to lowaltitude acidic-soil environments, a turning point in agricultural diversification of the savannahs (Spehar and Souza 1993;Spehar and Santos 2005).…”

Section: Introductionmentioning

confidence: 99%

Exploiting genotypic variability from low-altitude Brazilian Savannah-adapted Chenopodium quinoa

Spehar

Rocha

2010

Euphytica

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Saponin-free quinoa genotypes were evaluated in summer and autumn-winter sowings, for phenotypic traits and yield stability. They were obtained by single plant-progeny selection from hybrids, as part of the breeding efforts in adapting the crop to the Brazilian Savannah environments. The soils (Ferralsols) were limed and fertilized prior to cultivation. The experiment was sown in two dates: 20th December 2006 (summer), and 30th April 2007 (autumn-winter), at 15°39 0 and 16°14 0 S latitude, 47°27 0 and 47°44 0 W longitude, with altitudes of 976 and 1,110 m, respectively. The mean temperature and rainfall for the summer sowing were 23.0°C and 723 mm. In autumn-winter, under controlled irrigation, the mean temperature was 2.9°C lower than in summer, when plants were exposed to water logging spells. The treatments consisted of fourteen selected genotypes and the varieties Kancolla, BRS Piabiru and Q4.5, used as controls. Comparisons were based on plant height, biomass and grain yield, harvest index (HI) and 1,000 seed weight. The experimental design was a complete randomized bloc, with three replications. Analysis of variance was performed for each sowing and jointly. Statistical differences for the environments were evident only for grain size and plant height. The performance of selected genotypes in each sowing date and in the joint analysis, allows saying that populations Q0779, Q0780 and Q0782 are potentially useful in the acquisition of stable genotypes for the Brazilian Savannahs.

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“…As cited by Spehar and Santos (2005), the plant height variable is directly related to the obtained grain yield. In contrast with this affirmation and the observed results, the pattern of values for the coefficient of heritability is similar to the one observed for the productivity variable; thus, the h r ² value resulting m the combined analysis is closer to the highest h r ² value that belongs to the first environment (Table 3).…”

Section: Resultsmentioning

confidence: 99%

<b>Genetic parameters and productivity of quinoa in western Paraná

Vasconcelos¹,

Hoepers²,

Amaral³

et al. 2016

Acta Sci. Agron.

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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 m²) 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 -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.Parâmetros genéticos e produtividade de quinoa no oeste do Estado do Paraná, Brasil RESUMO. A quinoa possui destaque devido à sua qualidade nutricional, baixo colesterol e ausência de glúten; no Brasil, os esforços em seu cultivo, nas diferentes regiões, estão relacionados principalmente ao melhoramento. O presente trabalho objetivou determinar os parâmetros genéticos e avaliar a produtividade de diferentes genótipos de quinoa com o propósito de detectar genótipos passíveis de seleção. O experimento foi realizado nos anos agrícolas de 2010/11 e 2011/12, caracterizando ambientes 1 e 2, respectivamente. Dentro do ambiente 1, realizou-se a avaliação de 61 genótipos, no ambiente 2, foram avaliados 31 genótipos. O delineamento experimental adotado foi o de blocos casualizados com duas repetições, cada parcela medindo 2,0 x 5,0 m (10 m²) sendo constituída de quatro linhas espaçadas de 0,45 m. Com os dados de produtividade, altura de plantas na maturação e ciclo, foram realizadas análise de variância, teste de média e estimado os parâmetros genéticos. Os genótipos N24 e N08 foram os únicos a superar a produtividade de outros 46 genótipos, apresentando valores de produtividade de 1.446,23 e 1.428,93 kg ha -1 , com ciclo de 117 e 111 dias, respectivamente. Os valores de herdabilidade determinados demonstram a possibilidade de ganho genético com a seleção conjunta, envolvendo os dois ambientes. Palavras-chave:Chenopodium quinoa, seleção de genótipos, desempenho agronômico.

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Agronomic performance of quinoa selected in the Brazilian Savannah

Cited by 37 publications

References 4 publications

Response of Quinoa (Chenopodium quinoa Willd) Plant to Nitrogen Fertilization and Irrigation by Saline Water

Response of Quinoa (Chenopodium quinoa Willd) Plant to Nitrogen Fertilization and Irrigation by Saline Water

Exploiting genotypic variability from low-altitude Brazilian Savannah-adapted Chenopodium quinoa

<b>Genetic parameters and productivity of quinoa in western Paraná

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