Witches Broom
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Resistance of cacao tree to witches’ broom disease – A study of inheritance
RESUMO Foram avaliados durante 10 anos o número de vassouras vegetativas e de almofada floral em cada planta das progênies de cruzamentos em delineamento North Carolina II com os clones Ca 5, CAB 5003, Chuao 120, ICS 1, Moq 216, Scavina 12, Scavina 6 e SPA 5, no grupo 1 de progenitores e, CC 10, CCN 34, Cepec 90, CSul 3, Ma 16, RB 36, SGu 26 e SIAL 70 no g
Summa Phytopathologica. Publicado em: 2022
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2. Resistance of cocoa to Moniliophthora perniciosa – progenitors and progenies selection
ABSTRACT Witches' broom, caused by Moniliophthora perniciosa, is the most important cacao disease in Brazil, and the final objective of this study is increasing the level and durability of resistance to this fungus, through the association of different alleles or genes favorable to the character, for the generation of new cocoa varieties. It was conducted, f
Revista Ceres. Publicado em: 2022
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3. Resistance to witches’ broom in adult plants and progeny of local varieties of cacao in Southern Bahia
ABSTRACT Plants of local cacao variety from Southern Bahia were evaluated in order to verify if there are different levels of resistance to witches’ broom disease in the study population and if the evaluation of adult plants in the field is a good predictor of these resistance levels. The seedlings were maintained under greenhouse conditions and inoculated
Bragantia. Publicado em: 2020-12
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4. Association of genes from different sources of resistance to major cacao diseases
ABSTRACT This study aimed to select genotypes resistant to witches’ broom (WB) and black pod (BP), major cacao diseases in Brazil, as well as incorporate resistance genes to moniliasis supplemented by clones EET75 and UF273, forming populations of second-cycle recurrent selection. Moniliophthora perniciosa (2 × 105 basidiospores/mL) was inoculated on 30-d
Rev. Ceres. Publicado em: 2020-10
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5. Caminhada de Longa Duração pode Alterar Biomarcadores Cardíacos e Variáveis Ecocardiográficas Relacionadas à Função Diastólica?
ABSTRACT This study aimed to select genotypes resistant to witches’ broom (WB) and black pod (BP), major cacao diseases in Brazil, as well as incorporate resistance genes to moniliasis supplemented by clones EET75 and UF273, forming populations of second-cycle recurrent selection. Moniliophthora perniciosa (2 × 105 basidiospores/mL) was inoculated on 30-d
Arq. Bras. Cardiol.. Publicado em: 2020-10
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6. Molecular characterization of a phytoplasma associated with a commercial variety of Momordica charantia
ABSTRACT: Momordica charantia (bitter melon) presents two distinct types or varieties, known as wild type and commercial type. Plants of the wild type are hosts of a phytoplasma of the group 16SrIII-J, which is associated with a disease known as witches’ broom. However, this disease has not yet been reported in commercial bitter melon. Thus, symptomatic pl
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-05
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7. Cacao families and parents selected as resistant to natural infection of Moniliophthora perniciosa
Abstract The known sources of resistance to witches' broom (WB), a severe disease of cacao, are limited. Aiming to identify families and parents resistant to Moniliophthora perniciosa, a population of 22 families was evaluated by assessing the number of brooms formed per tree during 10 years under field conditions. The population was established in randomize
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-06
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8. Pathogenic variability of Moniliophthora perniciosa in three agroecological zones of the cacao region of Bahia, Brazil
Abstract Resistant cacao genotypes are the best measure to control the Witches' broom disease of cacao. To ensure efficiency, the pathogen variability in the cacao region of Bahia must be investigated. The pathogenic variability of Moniliophthora perniciosa inocula from nine municipalities was analyzed: Ilhéus, Floresta Azul and Jussari (agroecological zone
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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9. Analysis of the ergosterol biosynthesis pathway cloning, molecular characterization and phylogeny of lanosterol 14α-demethylase (ERG11) gene of Moniliophthora perniciosa
The phytopathogenic fungus Moniliophthora perniciosa (Stahel) Aime & Philips-Mora, causal agent of witches' broom disease of cocoa, causes countless damage to cocoa production in Brazil. Molecular studies have attempted to identify genes that play important roles in fungal survival and virulence. In this study, sequences deposited in the M. perniciosa Genome
Genet. Mol. Biol.. Publicado em: 03/11/2014
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10. Detection and molecular characterization of cactus witches'-broom disease associated with a group 16SrII phytoplasma in northern areas of China
In July 2010, cacti with typical phytoplasma symptoms were observed in Yangling district, Shaanxi Province, China. Based on amplification of 16S rRNA gene, phytoplasmas were detected by polymerase chain reaction (PCR) driven with universal primer pairs P1/ P7, followed by a nested PCR with universal primer pairs R16F2n/R16R2. Fragments of expected sizes (1.8
Tropical Plant Pathology. Publicado em: 2012-06
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11. Estudo em raiz e ráquis foliar de spathelia excelsa: fitoquímica e atividade frente ao fungo Moniliophthora perniciosa associado ao cupuaçuzeiro (Theobroma grandiflorum)
The chemical composition of Spathelia excelsa (Krause) R. S. Cowan & Brizicky was investigated and the limonoids harrisonin (1) and deacetylspathelin (2), alkaloids folinin and casimiroin mixture (3a, b), plus a further casimiroin (3b) were identified in methanol extract from root. The CH2Cl2 extract from the rachis yielded protolimonoid 3β-angeloyl-21,24-e
Quím. Nova. Publicado em: 2012
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12. Detection of 16SrII Group Phytoplasma in China Aster (Callistephus chinensis)
China aster, Callistephus chinensis, is widely grown in Myanmar as an ornamental plant. Symptoms of flower virescence were observed in diseased China aster plants in Yezin, Myanmar. The presence of a phytoplasma was detected and identified by applying Polymerase Chain Reaction (PCR)/ Restriction Fragment Length Polymorphism (RFLP) techniques and sequencing t
Tropical Plant Pathology. Publicado em: 2011-06