Divergência genética entre linhagens de melão do grupo Inodorus

Nunes, Glauber Henrique de Sousa; Melo, Dalila Regina Mota de; Dantas, Django Jesus; Aragão, Fernando Antônio de Souza; Nunes, Elaíne Welk Lopes Pereira

doi:10.1590/s1806-66902011000200026

Cited by 14 publications

(14 citation statements)

References 13 publications

(12 reference statements)

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“…Tabela 1. Contribuição relativa para a divergência genética entre 25 genótipos de melancia seleccionados para resistência à PRSV-W em 13 características avaliadas pelo método de Singh (1981) identification of the lines of interest from the estimates of the means of the most important characteristics is recommended to direct the crosses (Nunes et al, 2011). The choice depends on the traits of the parents to be improved, the type of inheritance and the source of germplasm available (Machado et al, 2000), so that the crosses are done between phenotypically complementary parents and carrying the traits required to meet the objectives of the breeding program (Veiga et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Genetic divergence between watermelon lines selected for resistance to Pappaya ringspot virus, type W

Chaves¹,

Santos²,

Alves³

et al. 2014

RCA

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Papaya ringspot virus, watermelon type (Pappaya ringspot virus-PRSV-W) is the main watermelon viral disease in Brazil. The work intended to evaluate the genetic divergence of watermelon lines type Crimson Sweet obtained from the cross of the resistant accession PI 595201 with Crimson Sweet and selected for to PRSV-W. Thirteen characteristics in 23 lines of the cross PI 595201 with Crimson Sweet and two control cultivars were evaluated. The genetic divergence was evaluated by multivariate procedures such as the Mahalanobis distance and by the Tocher's optimization grouping and nearest neighbor methods. The characteristics which contributed the most to the genetic divergence of the watermelon genotype were pulp coloration, total soluble solids, pH and titratable acidity. The Mahalanobis distance by the Tocher optimization grouping and nearest neighbor methods separated the lines into two distinct groups. The line WMX-001G-09-04-58-07pl#08 of group II was the most dissimilar in relation to the others of group I, which are

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Section: Resultsmentioning

confidence: 99%

Genetic divergence between watermelon lines selected for resistance to Pappaya ringspot virus, type W

Chaves¹,

Santos²,

Alves³

et al. 2014

RCA

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“…Although the number of groups found by the optimization method of Tocher and the hierarchical method of UPGMA were equal (four groups), there were noticeable differences in the number of genotypes per group. Similar disagreement Group Members I 199#2#1-E; 75#2#2-E;199#3#1-E;199#1#1-E;199#6#1-E;184#2#1-E;184#2;189#2#2-E;75#1#2-E; 197#2#2-E;197#3#1-E;197#2#1-E;189#2#3-E;107#1#2-E;7#2#1-E;107#1#1-E;125#2#2-E;189#1#2-E;189#3#3-E;75#3#2-E;197#1-E;189#2#1-E;199#5#2-E;189#3#2-E;206#1#2-E;206#1#4-E;7#2#2-E;75#1#3-E;Crespa 125#1#1-E; Robusta;86#1#2-E;206#1#6-E;75#3#1-E;190#1#2-E;Uberlândia 10000;117#1#1-E;184#2#5-E;206#3#1-E;86#2#1-E;199#2#2-E; Grand Rapids Albina #3;120#1#1-E;189#3#1-E;189#3#4-E; Grand Rapids Albina #2; II 117#1#3-E;75#1#1-E III Grand Rapids Albina #1 IV Belíssima between multivariate methods was also observed by Nunes et al (2011), who worked with other species. Nick et al (2010) stated the importance of identifying characteristics that most contribute to genetic diversity and those that could be discarded due to their insignificance.…”

Section: Discussionmentioning

confidence: 99%

Agronomic potential of biofortified crisphead lettuce (Lactuca sativa) and its reaction to Root-knot nematodes

et al. 2019

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Lettuce is the most-consumed leafy vegetable in Brazil due to its ease of preparation, nutritional quality, and affordability. Despite these benefits, there are few cultivars of crisphead lettuce (Lactuca sativa) that possess agronomic potential, high carotenoid content and resistance to nematodes. Therefore, we evaluated the agronomic potential of crisphead lettuce genotypes that are resistant to the root-knot nematode. The experiment was conducted at the Vegetable Experiment Station of the Federal University of Uberlandia (UFU), Monte Carmelo Campus. The trial was set up in a randomized block design with 49 treatments (43 genotypes obtained from crosses between Uberlandia 10000 and Belissima and six commercial cultivars) and three replications. After preparing the beds and before transplanting the seedlings, 11 simple samples were taken from each of the three experimental blocks to confirm the presence of nematodes within the experimental area. The following variables were determined 48 days after transplanting: chlorophyll content, leaf temperature, plant diameter, number of leaves per plant, fresh mass and incidence of root gall. The data were submitted to analysis of variance (ANOVA) and an F-test and the means were compared by the Scott-Knott test. Genetic diversity was represented by a dendrogram that was obtained using the hierarchical method of UPGMA and the optimization method of Tocher. We found genetic divergence and agronomic potential among the evaluated genotypes. Specifically, 199#1#1-E, 199#2#1-E, 199#2#2-E, 199#3#1-E, 199#6#1-E and 75#2#2-E presented good agronomic potential, were rich in carotenoids and showed resistance to the root-knot nematode.

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“…The main production areas are the Mossoró-Açu agricultural region in Rio Grande do Norte, and in the Jaguaribe Valley, Ceará, These states account for more than 85% of Brazilian production, and nearly all (>99%) of the melon exported from Brazil comes from these states (SIDRA/IBGE, 2019). The crop also has a significant social impact because it utilizes a large number of laborers throughout the year, it is estimated that the melon production chain directly and indirectly involves more than 60,000 jobs (NUNES et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the crop is developed by a production sector that uses high technology with modern techniques of irrigation, many inputs, and a sophisticated post-harvest structure for export of quality fruit to the European market. One of the most important inputs is seed from breeding programs, especially single hybrid seed (NUNES et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Potential of parents and hybrids experimental of the yellow melon

et al. 2020

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Melon or muskmelon (Cucumis melo L.) is of considerable economic importance in Brazil. Nearly all the cultivars currently grown are hybrids. Heterosis has been used to advantage in the melon plant, and the use of uniform hybrids is one of the reasons for successful cultivation. The aim of the present study was to evaluate the agronomic potential of yellow melon lines and hybrids. An experiment was conducted in randomized blocks with three replications to evaluate 24 hybrids generated by crosses among three elite lines used as female parents (AF-01, AF-02, and AF-03) and eight lines used as male parents (LAM-01, LAM-02, LAM-03, LAM-04, LAM-05, LAM-06, LAM-07, and LAM-08). Yield and fruit quality traits were evaluated. Partial diallel analysis was carried out to estimate general combining ability and specific combining ability. Additive and non-additive effects were observed for the yield, mean fruit weight, and pulp thickness traits. The lines AF-02, LAM-02, and LAM-03 are the most promising as parents as they more frequently have favorable alleles. The most prominent hybrids in diallel analysis were AF-02 x LAM-02, AF-02 x LAM-03, AF-02 x LAM-04, and AF-03 x LAM-06.

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Divergência genética entre linhagens de melão do grupo Inodorus

Cited by 14 publications

References 13 publications

Genetic divergence between watermelon lines selected for resistance to Pappaya ringspot virus, type W

Genetic divergence between watermelon lines selected for resistance to Pappaya ringspot virus, type W

Agronomic potential of biofortified crisphead lettuce (Lactuca sativa) and its reaction to Root-knot nematodes

Potential of parents and hybrids experimental of the yellow melon

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