Produtividade de cultivares e populações de cenoura em sistema orgânico de cultivo

Resende, G. M. de; Braga, M. B.; Semi-Árido., Embrapa. Centro de Pesquisa Agropecuária do Trópico; Hortaliças, Embrapa; Postal, Caixa

doi:10.1590/s0102-05362014000100017

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…Apesar da média nacional de produção ser de 31,02 t/ha (Anuário Brasileiro de Hortaliças, 2015), alguns estudos indicam a possibilidade de, em condições ideais de manejo, ser possível alcançar produtividades semelhantes às máximas obtidas neste trabalho. Resende & Braga (2014) verificaram produtividade de raízes comercializáveis máximas de 81,70 t/ha para a cv. Brasília, e de Tabela 1.…”

Section: Resultsunclassified

Adaptabilidade e estabilidade de populações de cenoura pelo método REML/BLUP

2017

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RESUMO O objetivo foi avaliar a adaptabilidade e estabilidade de genótipos de cenoura pelo método REML/BLUP. Os experimentos foram conduzidos em 20 ambientes nos anos de 2010, 2011, 2012 e 2014 em diferentes regiões produtoras de cenoura do Brasil. O delineamento experimental utilizado foi de blocos ao acaso com três repetições e parcelas de 1 m2. Foram avaliadas quatro populações de cenoura em fase de melhoramento: CNPH-14, CNPH-15, CNPH-16 e CNPH-17, as cultivares de polinização aberta BRS Planalto e Brasília e o hibrido Juliana. Aos 100 dias após a semeadura foi determinado em cada parcela o rendimento de raízes com padrão comercial. Foi utilizada a metodologia REML/BLUP para estimar a adaptabilidade e estabilidade dos genótipos. Pôde-se verificar que as populações com melhor desempenho e adaptabilidade e estabilidade nos ambientes estudados foram BRS Planalto, CNPH-14 e CNPH-17. A cultivar Juliana e a população CNPH-15 apresentaram os piores resultados frente à média dos ambientes, e Juliana apresentou adaptação específica a São Gotardo-MG e Canoinhas-SC. As populações CNPH-14 e CNPH-17 possuem adaptação ampla o que facilita a recomendação como futuras cultivares.

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Section: Resultsunclassified

Adaptabilidade e estabilidade de populações de cenoura pelo método REML/BLUP

2017

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“…The annual Brazilian production is approximately 752,000 tons, being the fourth most important vegetable in commercialized volume and the fifth in economic value (CNA 2017). Carrots stand out from other vegetables for containing a large amount of vitamin C, vitamin E, fibers and minerals such as potassium, phosphorus, calcium, magnesium and iron (Resende and Braga 2014).…”

Section: Introductionmentioning

confidence: 99%

Yield and phosphorus use efficiency of carrot cultivars

Jesus

Grangeiro

Sousa³

et al. 2021

Biosci. J.

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Phosphate fertilization is indispensable for carrot cultivation, as it contributes to plant development, formation of marketable roots and higher yields. In this context, the objective of this study was to evaluate the production and nutritional efficiency of carrot cultivars under phosphate fertilization. The experiments were carried out from July to November 2016 and from June to October 2017, at the Rafael Fernandes experimental farm, District of Alagoinha, Mossoró, RN, Brazil. The experimental design was in randomized blocks, in a 4×4 factorial scheme with 4 replicates. The treatments consisted of the combination of carrot cultivars (Brasília, Planalto, Suprema and Nativa) with phosphorus (P) doses (0, 90, 180 and 270 kg ha-1 P2O5). The characteristics analyzed were: P content in the diagnostic leaf, plant dry matter, plant height, marketable and total yields, and the classification of cultivars for efficiency and response to phosphate fertilization. The increments promoted by phosphate fertilization were 64% in plant height, 444% in dry matter and 284% in marketable yield. The maximum marketable yield was obtained with doses from 186.8 to 243.5 kg ha-1, depending on the cultivar. The Native cultivar was classified as more efficient in the use of P.

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“…The carrot (Daucus carota L.) is among the five most important vegetable crops in Brazil, considering the crop area or value of production (MAROUELLI; OLIVEIRA; SILVA, 2007; RESENDE; BRAGA, 2014). There is increasing among consumers the demand for better quality of carrot roots associated with the use of cultivars with good sustainability of cultivation, in search of a healthier diet and products with good visual quality and nutrition, free of pesticide residues and even with some functional properties.…”

Section: Introductionmentioning

confidence: 99%

Genetic parameters estimate for plant characters of a particular carrot population in two different agroecologic cultivation systems

et al. 2020

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Carrots are among the most planted vegetables in Brazil, which represents importance in the national market. This crop can be grown in conventional and agroecological systems, and studies to improve productivity, disease resistance and root quality in agroecological cropping systems are important. The aim of the present work was to estimate genetic parameters that provide a breeding strategy in the search for the development of new varieties of carrot adapted to the conditions of Distrito Federal’s agroecology cultivation. Considering data from tests performed in areas of agroecology cultivation (Natural Agriculture-NA and Organic Agriculture-OA), the following characteristics were evaluated: incidence of leaf blight-LB, incidence of root cracking-CRACK, root length-COMP, format of root tip-TP, format of root shoulder-TO, measure of the color of the a* xylem parameter-a*X, measure of the color of the a* phloem parameter-a*F. Traits were evaluated in 100 half-sib progenies derived from Brasília cultivar, using a completely randomized block design. For the characters COMP, a*X, a*F, TP and TO, the treatment X environment interaction was significant according to the results from test F. The values of the individual variance analyses presented significant effect for the following characteristics: COMP, a*X, TP, TO, LB for NA system, and COMP, a*X, a*F, TP for OA system. In NA system, the values of heritability estimates-ha² for the plant characters fluctuated from 65.66 to 25.52% and, in the OA system, the ha² of the characters a*X, was 81.13%. Estimates of genetic gain per cycle for the characters a*X and a*F were lower in NA system than the estimates observed in OA system.

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Produtividade de cultivares e populações de cenoura em sistema orgânico de cultivo

Cited by 7 publications

References 8 publications

Adaptabilidade e estabilidade de populações de cenoura pelo método REML/BLUP

Adaptabilidade e estabilidade de populações de cenoura pelo método REML/BLUP

Yield and phosphorus use efficiency of carrot cultivars

Genetic parameters estimate for plant characters of a particular carrot population in two different agroecologic cultivation systems

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