Características do feijão Carioca, um nôvo cultivar

Almeida, Luiz D'Artagnan de; Filho, H F Leitao; Miyásaka, Shiro

doi:10.1590/s0006-87051971000100015

Cited by 15 publications

(16 citation statements)

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“…A cultivar Carioca, padrão de suscetibilidade ao patógeno, foi recomendada há mais de trinta anos (ALMEIDA et al, 1977). Essa cultivar foi muito importante para a cultura do feijoeiro na década de 1970, por ter proporcionado aumento significativo na produtividade de grãos da cultura, sendo tolerante a vários estresses abióticos, porém com elevada suscetibilidade ao Fusarium.…”

Section: Resultsunclassified

Reação de linhagens de feijoeiro ao fungo Fusarium oxysporum f. sp. phaseoli em condições controladas

2011

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RESUMOEntre os patógenos que mais contribuem para a redução da produtividade do feijoeiro no Brasil está o Fusarium oxysporum f. sp. phaseoli. O emprego de cultivares resistentes é o controle mais eficaz para esse patógeno. Conduziu-se este trabalho, com o objetivo de avaliar linhagens de feijoeiro (Phaseolus vulgaris L.) do banco de germoplasma da Universidade Federal de Lavras (UFLA), quanto a reação ao Fusarium oxysporum f. sp. phaseoli e, ao mesmo tempo, estimar os parâmetros genéticos e fenotípicos que possam auxiliar em futuros programas de melhoramento para esse caráter. Foram avaliadas 367 linhagens em dez experimentos. As testemunhas 'Carioca' (suscetível) e 'Carioca MG' (resistente) foram utilizadas em todos os experimentos. O delineamento utilizado foi inteiramente ao acaso, com cinco repetições e parcelas de uma planta por vaso. As inoculações foram realizadas segundo a metodologia de corte e imersão de raízes na suspensão de esporos do fungo e as avaliações realizadas aos 21 dias após a inoculação com base no índice de severidade da doença empregando-se notas de 1 (plantas sem sintomas) a 9 (plantas mortas). ABSTRACTAmong the pathogens that most contribute for reducing the productivity of beans in Brazil is the Fusarium oxysporum f. sp. phaseoli. The use of resistant cultivars is the most effective control for this pathogen. The aim of this study was to evaluate germoplasm bean (Phaseolus vulgaris L.) lines of the Federal University of Lavras (UFLA) as the reaction to the Fusarium oxysporum f. sp. phaseoli and at the same time, to estimate the genetic and phenotypic parameters that could help in future programs of improvement for this character. Three hundred and sixty seven lines were evaluated in ten experiments. The controls' Carioca'(susceptible) and 'Carioca MG'(resistant) were used in all experiments. The experimental design used was a entirely randomized one, with five replicates and plots of one plant per pot. The inoculations were carried out following the method of cutting and dumping of roots in the suspension of spores of the fungus and the assessments conducted at 21 days after inoculation based on the index of severity of the disease employing up notes of 1 (plants without symptoms) to 9 (dead plants). Among the lines of germoplasm bank of the Federal University of Lavras (UFLA) assessed, 36.5% were resistant to Fusarium oxysporum f. sp. phaseoli. Among the resistance, most of the lines were obtained before 1990: out of the 18 lines of the experiments of VCU evaluated in 2005/06, only four were susceptible. The estimate of heritability (h 2 ) was high (h 2 = 87%), indicating that, in principle, the character is of easy selection.

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Section: Resultsunclassified

Reação de linhagens de feijoeiro ao fungo Fusarium oxysporum f. sp. phaseoli em condições controladas

2011

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“…However, the molecular similarity shown between the pinto seeded line 1533-15 and the carioca seeded lines indicate that differences are not so extensive. It should be remembered that the carioca market class arose in Brazil around the year 1966 (Almeida et al, 1971), from the selection of seeds with this market class in a chumbinho (gray color) bean crop.…”

Section: Genetic Diversitymentioning

confidence: 99%

Genetic Control of Seed Coat Darkening in Common Bean Cultivars from Three Market Classes

Rodrigues

Souza

et al. 2019

Crop Science

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Common bean (Phaseolus vulgaris L.) cultivars with slow seed coat darkening benefit the growers by extending the seed storage period without losses in commercial quality. Seed coat darkening in pinto and carioca seeded common bean is controlled by recessive genes, but it is not known whether these genes are different or not. The objectives of this study were (i) to verify if the gene that controls seed coat darkening in common bean cultivars from different market classes is the same, and (ii) to evaluate the efficiency of the simple sequence repeat (SSR) marker Pvsd‐1158 and the single nucleotide polymorphism (SNP) marker PvbHLHp12804 linked to the Sd gene in identifying carioca and mulatinho seeded lines contrasting for seed coat darkening. Seventeen lines were used for genotypic and phenotypic evaluations in two trials, and F2:3 progenies obtained from crosses between one pinto bean line (Sd gene) and two carioca lines that have slow seed coat darkening were used in segregation tests. The result of the two markers was identical and shown 87.5% coincidence with phenotypic data. Only two lines, CNFM 11940 (mulatinho) and TAA Dama (carioca), exhibited slow seed coat darkening and marker alleles related to regular darkening. Therefore, there was recombination between the markers and the Sd gene, or there is another gene causing slow seed coat darkening in these lines. All F2:3 progenies exhibited slow seed coat darkening, indicating that there was no segregation. The two markers are efficient for assisted selection. Results of the genotypic evaluations and the segregation test indicating that the same gene (Sd) is responsible for seed coat darkening in pinto and carioca beans.

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“…The original Carioca cultivar was obtained in 1969 (ALMEIDA et al, 1971). Since then, the work of dry bean breeders has been concentrated on this type of grain, and innumerable other cultivars have been obtained (ABREU et al, 2004;MATOS et al, 2007;ABREU et al, 2007;MELO et al 2010;ABREU et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Estimates of genetic parameters of late seed-coat darkening of carioca type dry beans

2012

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In order to facilitate commercialization of cultivars of carioca type dry beans, the grains must have the lightest possible cream color and this phenotype must be persistent (late seed-coat darkening). There are reports of genetic variability for this trait. The objectives of this study were to obtain information regarding genetic control of the trait, with emphasis on the estimate of heritability and if it varies according to days after harvest, to verify the effect of locations and/or crop season on seed-coat darkening of the grains and to estimate the genetic and phenotypic correlations of the trait with cooking time, tannin content and grain yield. F 2:3 and F 2:4 progenies derived from crossing of the cultivar BRSMG Madrepérola (late seed-coat darkening) and the line RP-2 (early seed-coat darkening) were used. It is concluded that seed-coat darkening is influenced by the environment, crop season or locations; nevertheless, the interaction progenies x environments and progenies x locations is predominantly simple, not expressively changing classification of the progenies. Although the heritability of the darkening scores tends to increase with the storage time of the grain, the interaction progenies x time periods of assessment was not observed. Grains with late seed-coat darkening present a lower tannin content and require less cooking time. The genetic correlation between a dark seed-coat and grain yield was practically null.Index terms: Phaseolus vulgaris L., genetic plant breeding, quantitative genetics, grain quality. RESUMOPara facilitar a comercialização das cultivares de feijão carioca, estas devem possuir cor creme dos grãos o mais claro possível e esse fenótipo deve ser persistente (escurecimento tardio). Há relatos de variabilidade genética para esse caráter. Os objetivos deste trabalho foram obter informações sobre o controle genético do caráter, com ênfase na estimativa da herdabilidade e se ela varia com os dias após a colheita, verificar o efeito de locais e/ou safras sobre o escurecimento dos grãos e estimar as correlações genéticas e fenotípicas do caráter com o tempo de cozimento, teor de tanino e produtividade de grãos. Para isso foram utilizadas progênies F 2:3 e F 2:4 derivadas do cruzamento entre a cultivar BRSMG Madrepérola (escurecimento tardio) e a linhagem RP-2 (escurecimento precoce). Concluiu-se que o escurecimento é influenciado pelo ambiente, safras ou locais; contudo a interação progênies x ambientes e progênies x gerações é predominantemente simples, não alterando expressivamente a classificação das progênies. Embora a herdabilidade das notas de escurecimento tenha tendência de aumentar com o tempo de armazenagem dos grãos, não foi constatada interação progênies x épocas de avaliação. Grãos com escurecimento tardio possuem menor teor de tanino e exigem menor tempo de cocção. A correlação genética entre escurecimento e produtividade de grãos foi praticamente nula. Termos para indexação:Phaseolus vulgaris L., melhoramento genético de plantas, genética quantitativa, quali...

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Características do feijão Carioca, um nôvo cultivar

Cited by 15 publications

References 0 publications

Reação de linhagens de feijoeiro ao fungo Fusarium oxysporum f. sp. phaseoli em condições controladas

Reação de linhagens de feijoeiro ao fungo Fusarium oxysporum f. sp. phaseoli em condições controladas

Genetic Control of Seed Coat Darkening in Common Bean Cultivars from Three Market Classes

Estimates of genetic parameters of late seed-coat darkening of carioca type dry beans

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