Inheritance of resistance to Pepper yellow mosaic virus in Capsicum baccatum var. pendulum

Bento, Cíntia dos Santos; Rodrigues, Rosana; Gonçalves, Leandro Simões Azeredo; Oliveira, Hérica Santos de; Santos, Marilene Hilma dos; Pontes, Marísia Cyreti Forte; Sudré, Cláudia Pombo

doi:10.4238/2013.april.10.3

Cited by 23 publications

(19 citation statements)

References 26 publications

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“…Genetic resource studies in pre-breeding and breeding have been conducted for C. baccatum, which were primarily aimed at morpho-agronomic characterization and disease resistance (Rêgo et al, 2009;Rodrigues et al, 2012;Bento et al, 2013;Gonçalves et al, 2013). Additionally, interspecific crossing for gene introgression of bacterial spot disease resistance from C. baccatum into C. annuum have been successfully obtained by Potnis et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Genetic dissection of agronomic traits in Capsicum baccatum var. pendulum

et al. 2015

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ABSTRACT. Genetic mapping is very useful for dissecting complex agronomic traits. Genetic mapping allows for identification of quantitative trait loci (QTL), provide knowledge on a gene position and its adjacent region, and enable prediction of evolutionary mechanisms, in addition to contributing to synteny studies. The aim of this study was to predict genetic values associated with different agronomic traits evaluated in an F 2 population of Capsicum baccatum var. pendulum. Previously, a reference genetic map for C. baccatum was constructed, which included 183 markers (42 microsatellite, 85 inter-simple sequence repeat, and 56 random amplification of polymorphic DNA) arranged in 16 linkage groups. The map was used to identify QTL associated with 11 agronomic traits, including plant height, crown diameter, number of days to flowering, days to fruiting, number of fruits per plant, average fruit weight, fruit length, fruit diameter, fruit QTLs for agronomic traits in C. baccatum var. pendulum pulp thickness, soluble solids, and fruit dry weight. QTL mapping was performed by standard interval mapping. The number of small QTL effects ranged from 3-11, with a total of 61 QTL detected in 9 linkage groups. This is the first report involving QTL analysis for C. baccatum species.

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Section: Introductionmentioning

confidence: 99%

Genetic dissection of agronomic traits in Capsicum baccatum var. pendulum

et al. 2015

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“…Riva et al (2004), studying the same pathosystem, identified an ADD of 1.13. Similarly, Bento et al (2013), evaluating the resistance of C. baccatum to PepYMV, verified an ADD of 1.12, indicating an overdominant action. Juhász et al (2008) observed a value of 1.0 in a tomato-PepYMV pathosystem, indicating complete dominance.…”

Section: Resultsmentioning

confidence: 80%

Inheritance of bacterial spot resistance in Capsicum annuum var. annuum

Silva¹,

Rodrigues²,

Pimenta³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Since 2008, Brazil is the largest consumer of agrochemicals, which increases production costs and risks of agricultural products, environment, and farmers' contamination. Sweet pepper, which is one of the main consumed vegetables in the country, is on top of the list of the most sprayed crops. The bacterial spot, caused by Xanthomonas spp, is one of the most damaging diseases of pepper crops. Genetic resistant consists of a suitable way of disease control, but development of durable resistant cultivars as well as understanding of plant-bacterium interaction is being a challenge for plant breeders and pathologists worldwide. Inheritance of disease resistance is often variable, depending on genetic background of the parents. The knowledge of the genetic base controlling such resistance is the first step in a breeding program aiming to develop new genotypes, bringing together resistance and other superior agronomic traits. This study reports the genetic basis of bacterial spot resistance in Capsicum annuum var. annuum using mean generation analysis from crosses between accessions UENF 2285 (susceptible) and UENF 1381 (resistant). The plants of each generation were grown in a greenhouse and leaflets were inoculated with bacterial strain ENA 4135 at 10 5 CFU/mL in 1.0 cm 2 of the mesophyll. Evaluations were performed using a scoring scale whose grades ranged from 1.0 (resistant) to 5.0 (susceptible), depending on symptom manifestation. Genetic control of bacterial spot has a quantitative aspect, with higher additive effect. The quantitative analysis showed that five genes were the minimum number controlling bacterial spot resistance. Additive effect was higher (6.06) than dominant (3.31) and explained 86.36% of total variation.

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“…The main symptoms are leaf twisting, mosaic development, dwarfism, and fruit deformity (Maciel-Zambolim et al, 2004;Bento et al, 2013). Seven genic loci have already been identified in pvr series imparting resistance to the Potyvirus genus in Capsicum plants.…”

Section: Introductionmentioning

confidence: 99%

“…These include bacterial spot (Xanthomonas spp), anthracnose (Colletotrichum spp), and Pepper yellow mosaic virus (PepYMV) (Riva-Souza et al, 2009;Bento et al, 2013;Diao et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Research Article Multiple genetic resistances in Capsicum spp.

Bento¹,

Souza²,

Sudré³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. This study aimed to identify Capsicum genotypes with resistance to bacterial spot (BS), anthracnose and Pepper yellow mosaic virus (PepYMV). Fifty-four genotypes of Capsicum spp were evaluated. Resistance reaction against BS was evaluated using three replicates, testing hypersensitivity and quantitative resistance in leaves. After evaluation, inoculated leaves were detached from the plants, being then cultivated until reproductive stage for evaluations anthracnose resistance in immature and mature fruit, totalizing 18 fruits per genotype. For PepYMV resistance was performed with five replications. Each genotype reaction was evaluated by a scoring scale, using the area under the disease progress curve for each pathosystem, and incubation period for the three systems. The latent period was evaluated only for the pathosystem Capsicum-Colletotrichum gloeosporioides. Means were grouped by the Scott-Knott test. Measures of dissimilarity matrix among the genotypes were obtained by Gower's algorithm and the grouping was obtained by the UPGMA clustering method. The accessions belonging to the Capsicum frutescens were the most susceptible to the three diseases. At least one genotype of Capsicum baccatum var. pendulum, Capsicum annuum, and Capsicum chinense showed resistance potential to BS and PepYMV, for use in breeding programs. The accession UENF 1381 (C. annuum) was resistant to the three pathogens.

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Inheritance of resistance to Pepper yellow mosaic virus in Capsicum baccatum var. pendulum

Cited by 23 publications

References 26 publications

Genetic dissection of agronomic traits in Capsicum baccatum var. pendulum

Genetic dissection of agronomic traits in Capsicum baccatum var. pendulum

Inheritance of bacterial spot resistance in Capsicum annuum var. annuum

Research Article Multiple genetic resistances in Capsicum spp.

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