Divergência genética entre subamostras de mandioca

Nick, Carlos; Carvalho, Samuel Pereira de; Jesus, Adriana Madeira Santos; Custódio, Telde Natel; Marim, Bruno Garcia; Assis, Luiz Henrique Bambini de

doi:10.1590/s0006-87052010000200005

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…The most divergent traditional cultivars found in the present study can be used in breeding programs as parents for heterotic clones (Gonçalves-Vidigal et al 1997) as long as the parents are genetically complementary (Nick et al 2010). For this, it is necessary to determine their agronomic characteristics regarding the storage root dry matter content, yield, organoleptic characteristics, and the presence of flowering.…”

Section: Genetic Diversitymentioning

confidence: 89%

Population Structure and Genetic Diversity in Sweet Cassava Cultivars from Paraná, Brazil

et al. 2016

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The objectives of the present study were to assess the population structure and genetic diversity in traditional sweet cassava cultivars collected in Bbackyard^cultivations in the municipalities of Maringá, Cianorte, and Toledo, State of Paraná, Southern Brazil, using 13 SSR molecular markers. All the loci analyzed were considered polymorphic with a mean of 3.15 alleles per locus; the mean polymorphism information content (PIC) value found was 0.4598, indicating that the primers were reasonably informative and the heterozygosity amplitude observed ranged from 0.0270 (GA134) to 0.8718 (SSRY45), with a mean of 0.4762, while the mean genetic diversity obtained was 0.5407, ranging from 0.3138 (GA21) to 0.6502 (GA140). The most divergent combinations were BGM434T-BGM20M, BGM35C-BGM20M, BGM430T-BGM232M, BGM430T-BGM164M, BGM430T-BGM322M, and BGM35C-BGM164M. The analysis of population structure distributed the traditional cultivars assessed in four different groups. The analysis of molecular variance (AMOVA) estimated that 11, 15, and 74 % of the variance were between groups, between individuals within groups, and between individuals within the population as a whole, respectively. The F is (0.170) and F it (0.259) values indicated a number of heterozygotes present in the population under study lower than that necessary to reach the Hardy-Weinberg equilibrium. The genetic variability found among the traditional sweet cassava cultivars assessed was considered wide, and the groups that were most distant were mostly cultivars from Toledo and Maringá.

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Section: Genetic Diversitymentioning

confidence: 89%

Population Structure and Genetic Diversity in Sweet Cassava Cultivars from Paraná, Brazil

et al. 2016

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“…The use of morphological characters combined with multivariate techniques has been widely utilized to quantify genetic distance [3], examples of which can be found in such quantifications for crops like pepper [4], cassava [5], soybeans [6], goatweed [7] and turmeric [8].…”

Section: Introductionmentioning

confidence: 99%

Genetic Divergence in Mango and Obtaining Minimum Efficient Descriptors

Preisigke¹,

Campos²,

Souza³

et al. 2013

AJPS

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Mangifera indica (mango) is a typically tropical fruit with considerable economic value. Brazil features a wide variety of cultivars of this fruit, most of which are known under several different names. Indeed, the nomenclature of mango varieties is still quite confusing. Up to now there has been no well-defined scientific principle to differentiate them. The objective of the present work is to compare the different clustering methods in assessing genetic divergence among mango accessions, as well as identify the minimum efficient descriptors for that crop. A total of 20 mango accessions in Cáceres, Mato Grosso state, Brazil were evaluated. When building dissimilarity matrices, the descriptors were divided according to the following groups: leaf, flower/inflorescence, fruit, seed and growth habit/ripening period. With these divisions, combinations were performed among the groups of descriptors. The similarity index was used to obtain the dissimilarity matrices. Later, the accessions were clustered using the methods of Tocher, Ward and UPGMA. The study observed that it was possible to reduce the number of descriptors from 64 to 35, and that the clustering methods were compatible with the study of the genetic diversity of mango.

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“…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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Divergência genética entre subamostras de mandioca

Cited by 13 publications

References 16 publications

Population Structure and Genetic Diversity in Sweet Cassava Cultivars from Paraná, Brazil

Population Structure and Genetic Diversity in Sweet Cassava Cultivars from Paraná, Brazil

Genetic Divergence in Mango and Obtaining Minimum Efficient Descriptors

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

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