CARACTERIZAÇÃO MORFOLÓGICA DE FONTES DE RESISTÊNCIA DE MELOEIRO A Pseudoperonospora cubensis

Albuquerque, Leidiane Bezerra; Antônio, Rafaela Priscila; Nunes, Glauber Henrique de Sousa; Medeiros, Ravier Valcácer de; Filho, Antonio José Rodrigues da Silva

doi:10.1590/1983-21252015v28n312rc

Cited by 8 publications

(9 citation statements)

References 20 publications

(15 reference statements)

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“…Thus, it would be possible to identify new botanical varieties suitable for the genetic breeding of the species, since most of the characteristics that indicate the botanical varieties are controlled by a few genes (DOGIMONT, 2011). Indeed, among the melon accessions from family farming, the presence of some sources of resistance to pathogens was identified, such as Rhizoctonia solani 401 (SALES JÚNIOR et al, 2015), Myrothecium roridum (NASCIMENTO et al, 2012), Macrophomina phaseolina 402 (AMBRÓSIO et al, 2015) and Pseudoperonospora cubensis (ALBUQUERQUE et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Notwithstanding, Roy et al (2012) found wide variation in wild melons from India and showed that melons of the variety momordica were grown there. Thereafter, with the Great Navigations, it is likely that melons of this variety, grown in several states of the Brazilian semi-arid region, have come from India, as shown in the list of accessions from the collection of the Federal Rural University of the Semi-Arid (ALBUQUERQUE et al, 2015). This assumption gains strength because current reports indicate that melons split when approaching maturity in many areas of Northeast Brazil, a descriptor that is characteristic of the variety momordica.…”

Section: Introductionmentioning

confidence: 99%

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Botanical Identification and Genetic Diversity in Melons From Family Farming in the State of Maranhão

et al. 2017

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-The aim of this work was to perform botanical identification and to estimate genetic diversity in two sequential inbred generations (progenies S 1 and S 2 ) of melon accessions from traditional agriculture in the state of Maranhão, in order to generate useful information for commercial melon breeding. Two field experiments were carried out in a completely randomized block, using four replicates of 15 accessions from a first selfing cycle in 2013, and three replicates of 25 subaccessions (generation S 2 ) in 2014. Flower and fruit descriptors were measured to obtain quantitative and qualitative data, in addition to a systematized photographic documentation of fruit for visually comparing the progenies S 1 and S 2 . Distance matrices for quantitative and qualitative data were obtained and used to perform a joint analysis and UPGMA method. Large genetic diversity was found in the accessions analysed, since the presence of melon progenies was observed in the Cucumis melo ssp. agrestis, with its botanical varieties momordica and conomom, and of the Cucumis melo ssp. melo, with the botanical varieties cantalupensis and chandalak. Divergence analysis showed the formation of three groups in generation S 1 and four groups in S 2 . However, the groups were not separated either by subspecies or by botanical variety. Thus, in addition to the large genetic diversity among and within melon accessions from family farming in the state of Maranhão, the progenies presented a large introgression of traits of the different subspecies and their botanical varieties due to the reproductive system and seed management of these species.Keywords: Botanical variety. Cucumis melo L.. Endogamic progenies.CLASSIFICAÇÃO BOTÂNICA E DIVERGÊNCIA GENÉTICA EM MELÕES DA AGRICULTURA FAMILIAR MARANHESE RESUMO -O trabalho teve como objetivos realizar a classificação botânica e estimar a diversidade genética em duas gerações endogâmicas sequenciais (progênies S 1 e S 2 ) de acessos de melão da agricultura familiar do Maranhão, visando gerar informações úteis para o melhoramento do melão comercial. Foram conduzidos dois experimentos de campo em blocos casualizados completos, com quatro repetições e 15 acessos em 2013 e, três repetições e 25 subacessos em 2014. Para avaliação dos acessos foram aplicados descritores quantitativos e qualitativos de flor e fruto, além de uma documentação fotográfica sistematizada dos frutos com análise visual, comparando os frutos das gerações S 1 e S 2 . Foram obtidas as matrizes de distância nos dois tipos de descritores e se fez a análise conjunta e em seguida realizou-se o agrupamento pelo método UPGMA. Verificou-se que nos acessos analisados, existe uma grande diversidade genética, pois foram encontradas progênies de melão da subespécie agrestis e suas variedades botânicas momordica e conomom e da subespécie melo com as variedades botânicas cantalupensis e chandalak. A análise de divergência na geração S 1 mostrou a formação de três grupos e na geração S 2 foram formados quatro agrupamentos, entretanto os grup...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Botanical Identification and Genetic Diversity in Melons From Family Farming in the State of Maranhão

et al. 2017

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“…This precision in selection can be confirmed using genetic parameters, such as heritability and accuracy (Albuquerque et al, 2015). The trait NMLyp in the experiments with controlled infestation had the highest heritability values (74 to 88%), except for trial LAB2 (38%).…”

Section: Resultsmentioning

confidence: 65%

“…High accuracy results in highly reliable genotypic value predictions, and the selection of the best accessions (Albuquerque et al, 2015). Selection accuracy has been used to make inferences in regard to precision, because it is related to the relative coefficient of variation and the number of replications (Resende and Duarte, 2007).…”

Section: Resultsmentioning

confidence: 99%

New sources of resistance to leafminers (Liriomyza sativae) in melon (Cucumis melo L.) germplasm

Celin¹,

Oliveira²,

Dias-Pini³

et al. 2017

Genet. Mol. Res.

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“…In that season, the high precipitation (> 45m mm) was the main problem for the melon crop. In addition, the occurrence of diseases such as fruit blotches, caused by the bacterium Acidovorax avenae (ALVES et al, 2010), and mildew, caused by the fungus Pseudoperonospora cubensis (ALBUQUERQUE et al, 2015) are frequent. All these factors lead to low productivity and low SS content, thus reducing fruit quality.…”

Section: Resultsmentioning

confidence: 99%

Stability, adaptability and shelf life of Cantaloupe melon hybrids

et al. 2019

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The adoption of melon hybrids by the productive sector necessitates a prior evaluation of the productivity, quality and shelf life of their fruits. Due to the different environmental conditions under which the hybrids are evaluated, an accentuated genotype-environmental interaction is expected to become apparent and likewise play important role in manifestation of phenotypic traits. The objective of the present work was to evaluate melon hybrids in the state of Rio Grande do Norte. The adaptability and stability of the genetic values were estimated by the HMRPGV method (Harmonic Mean of the Relative Performance of Genetic Values) for the following traits: yield, and soluble solids (SS) content in the period between 2010 to 2015. In 2017, the more promising melon hybrids from previous trials were evaluated under commercial conditions to determine the fruit’s yield, quality and shelf life. The predominance of the complex part of the genotype-environmental interaction was verified for both yield and SS content. Hybrids HC-02 and HC-11 show promising traits when grown under the conditions of the Mossoró-Assu Agricultural Complex owing their high stability, adaptability, yield, and fruit quality. Hybrids HC-02, HC-11, and ‘Hy Mark’ are suitable as international exports due to their long shelf life.

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CARACTERIZAÇÃO MORFOLÓGICA DE FONTES DE RESISTÊNCIA DE MELOEIRO A Pseudoperonospora cubensis

Cited by 8 publications

References 20 publications

Botanical Identification and Genetic Diversity in Melons From Family Farming in the State of Maranhão

Botanical Identification and Genetic Diversity in Melons From Family Farming in the State of Maranhão

New sources of resistance to leafminers (Liriomyza sativae) in melon (Cucumis melo L.) germplasm

Stability, adaptability and shelf life of Cantaloupe melon hybrids

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