Reação de cultivares de feijoeiro comum à mancha angular em casa de vegetação

Reis-Prado, Fabiana G.; Sartorato, A.; Costa, J. G. C. da; Rava, C. A.; Sibov, Sérgio Tadeu; Pinheiro, José Baldin; Carneiro, Monalisa Sampaio

doi:10.1590/s0100-41582006000300011

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…According to Colombari Filho et al (2010), the characterization of diversity may be more useful when evaluated in combination with genotype and phenotypic information of interest. Even though there are several studies on the genetic (Corrêa et al 2001;Mahuku et al 2011;Miller et al 2018;Nay et al 2019b) and phenotypic (Sannazzaro et al 2003;Reis-Prado et al 2006;Chataika et al 2010;Pereira et al 2019a, b) characterization of ALS resistance, as well as evaluation of the general genetic diversity of common bean accessions (Campa et al 2018;Raatz et al 2019;Valentini et al 2018;Gioia et al 2019), this is the first study involving phenotypic resistance evaluation in combination with genetic diversity of loci associated with ALS resistance.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of Pseudocercospora griseola resistance loci in common beans

Almeida

Arruda

Paulino

et al. 2020

Trop. plant pathol.

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Common bean (Phaseolus vulgaris L.) is one of the most widely grown legumes in the world. Although the crop has high yield potential, average yields in Brazil are low due to several diseases. Angular leaf spot (ALS), caused by Pseudocercospora griseola, is among the most important diseases. A set of 81 accessions from the Instituto Agronômico (IAC, Campinas, SP) germplasm bank were evaluated for ALS resistance and genotyped by 12 microsatellites previously associated with ALS QTL resistance. Allele frequencies, number of alleles per locus, expected heterozygosity (He), and Shannon's Information Index (I) were calculated. The average Ho was 0.12, and the He was 0.54. The STRUCTURE analysis and UPGMA clustering based on Nei's genetic distance indicated a moderate degree of genetic diversity, with 4 and 5 main groups, respectively. Evaluation of the severity of ALS showed that 17% of the accessions had resistance. Cultivars were recommended for breeding crosses aimed at gaining in genetic diversity and resistance to ALS.

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Section: Discussionmentioning

confidence: 99%

Genetic diversity of Pseudocercospora griseola resistance loci in common beans

Almeida

Arruda

Paulino

et al. 2020

Trop. plant pathol.

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“…Other studies on the characterization of common bean lines aiming at ALS resistance were carried out in Brazil (Oliveira et al 2004, Reis-Prado 2006, Sartorato 2006, Moda-Cirino et al 2012, Pádua et al 2016, Almeida et al 2020. In these studies, overall, 14% of accessions were resistant to P. griseola.…”

Section: Resultsmentioning

confidence: 99%

Identification of sources of resistance to race 63-63 of Pseudocercospora griseola in common bean lines

Pádua

Barcelos

Pereira

et al. 2022

Crop Breed. Appl. Biotechnol.

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Angular leaf spot (ALS), caused by the fungus Pseudocercospora griseola, is one of the most important foliar fungal diseases in common bean (Phaseolus vulgaris L.). The search for new sources of resistance to ALS is a promising activity in common bean breeding programs. In this study, the reaction of 416 germplasm accessions from the Universidade Federal de Lavras (UFLA) to P. griseola (race 63-63, the most important and most aggressive race) was assessed under greenhouse conditions (plants in the V2 stage, fully developed unifoliolate leaves). We identified 102 (24.5%) resistant and 314 (75.5%) susceptible accessions. Among the resistant lines, more than half are Carioca grain type lines. This study characterizes the resistance of a wide collection of common bean genotypes. The identification of new accessions resistant to P. griseola is an important step in common bean breeding programs. These lines can continually be incorporated in backcrosses to obtain cultivars resistant to ALS.

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“…O patógeno provoca lesões em folhas, vagens, ramos e pecíolos e pode causar grave desfolhamento (Jesus Junior et al 2003). Sem controle adequado da doença, as perdas podem chegar a 70% da produção (Sartorato & Rava 1992), dependendo da susceptibilidade das cultivares e das condições ambientais (Reis-Prado et al 2006).…”

Section: Control Of Angular Leaf Spot By Using Protective Mixtures Inunclassified

Plant stimulant effect on Brasil-Bahia tobacco growth and production

Vieira

Almeida

2010

Pesqui. Agropecu. Trop.

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INTRODUÇÃONas últimas décadas, o crescimento populacional gerou a necessidade de maior produção de alimentos, que foi conseguida pela intensificação de atividades agrícolas. A expansão da fronteira agrícola, associada à intensificação na utilização dos recursos do meio, ocasionou desequilíbrios e redução da diversidade biológica nos agroecossistemas (Altieri 1999) ) e testemunha sem controle da doença. Para a cultivar Pérola, apesar de a eficácia de controle da doença ser semelhante à da calda sulfocálcica, somente a calda bordalesa proporcionou acréscimo no rendimento de grãos de 17,7%, em relação à testemunha, propiciando rentabilidade de R$ 386,40 por hectare. Para a cultivar BRS Valente, as caldas bordalesa e sulfocálcica, aplicadas quinzenalmente, proporcionaram acréscimo ao rendimento de grãos de 25,0% e 21,8%, em relação à testemunha, além de apresentarem eficácia de controle de 62% da mancha-angular, propiciando rentabilidade de R$ 573,15 e R$ 464,10 por hectare, respectivamente. PALAVRAS-CHAVE: Phaeoisariopsis griseola; Phaseolus vulgaris; agricultura orgânica; calda bordalesa; calda sulfocálcica. CONTROL OF ANGULAR LEAF SPOT BY USING PROTECTIVE MIXTURES IN IRRIGATED COMMON BEAN UNDER ORGANIC CROPPING SYSTEMA field experiment was carried out with the Pérola and BRS Valente cultivars, aiming to evaluate the efficiency of protective mixtures, in two spraying periods, for controlling angular leaf spot caused by Phaeoisariopsis griseola in common bean, under organic cropping system, in the dry season and under irrigation. A randomized complete block design, in a 2x4 factorial scheme, with four replications, was used, in which the first factor was the spraying intervals (15 and 30 days), and the second the protective mixtures (bordeaux, lime sulfur, and a mixture with silicate Rocksil ® ) and control without any mixture. To the Pérola cultivar, the bordeaux mixture provided an increase of 17,7% in grain yield, when compared to the non-sprayed control, reducing significantly the angular leaf spot severity, achieving a control efficiency of 75%, and propitiating a profit of R$ 386.40 ha , respectively, when applied at each 15 days.

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Reação de cultivares de feijoeiro comum à mancha angular em casa de vegetação

Cited by 7 publications

References 4 publications

Genetic diversity of Pseudocercospora griseola resistance loci in common beans

Genetic diversity of Pseudocercospora griseola resistance loci in common beans

Identification of sources of resistance to race 63-63 of Pseudocercospora griseola in common bean lines

Plant stimulant effect on Brasil-Bahia tobacco growth and production

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