Diversidade genética de variedades tradicionais de mandioca (Manihot esculenta Crantz) cultivada em comunidades da Baixada Cuiabana em Mato Grosso por meio de microssatélites

Carrasco, Nancy Farfán

doi:10.11606/d.11.2012.tde-19092012-145332

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…Thus; the 5 cassava populations studied generated an average of 97.14 % polymorphism rate. These results are in agreement with the results of Carrasco [22] and Mühlen et al [23] who obtained 95 % and 97.96 % polymorphic The overall fixation index results could be related to agricultural practices such as regeneration of cuttings. In addition, studies by Kombate et al [24] in Togo showed that the majority (48.1%) of cuttings used were from previous cassava crops.…”

Section: Genetic Diversity Within Populationssupporting

confidence: 92%

Molecular Genetic Diversity of Manioc (Manihot esculenta Crantz) Using Simple Sequence Repeated Markers (SSR) in the Kara Region of Togo

Adjata,

Pita,

Paul

et al. 2024

AJAHR

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Cassava (Manihot esculenta Crantz), a plant of the future, is one of the main crops with high genetic potential. Therefore, the knowledge of its genetic variability would be of great importance for its effective use in genetic improvement programs. The objective of this work was to characterize the genetic diversity of cassava cultivars present in the Kara region of Togo. Thus, a total of 91 cassava leaf samples collected in the 7 prefectures of the Kara region were analyzed using 7 pairs of SSR microsatellite primers. Fifty-three alleles were detected with an average of 7.57 alleles per locus. The polymorphic information content ranged from 0.63 to 0.83 with an average of 0.74, indicating a high level of marker polymorphism. Molecular analysis of variance revealed that the majority of variability occurred within individuals and accounted for 99 % of the total variation between individuals. Weak genetic differentiation (Fst=0.011) was also observed between populations. The genetic structuring model based on the Neighbour-Joining algorithm method divided the individuals into 6 groups independently of local names. These results indicate the presence of high genetic resource variability in the studied populations. Therefore, it would be important to implement management strategies to better conserve cassava genetic resources and to facilitate the identification of successful cultivars.

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Section: Genetic Diversity Within Populationssupporting

confidence: 92%

Molecular Genetic Diversity of Manioc (Manihot esculenta Crantz) Using Simple Sequence Repeated Markers (SSR) in the Kara Region of Togo

Adjata,

Pita,

Paul

et al. 2024

AJAHR

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“…The average polymorphism among the populations was 95.48%, proving that the loci used had high informative power to detect genetic variability in cassava populations. Similarly, Carrasco (2012), obtained 95.00% polymorphism, and Mühlen et al (2000) found 97.96% of polymorphic loci, both evaluating the genetic diversity of cassava registers based on microsatellite markers. Table 5 presents an estimate of genetic identity Nei (1972) among pairs of populations.…”

Section: Genetic Diversity Among Populations Of Cassava Ethno-varietiesmentioning

confidence: 94%

“…The obtained values indicate that the studied populations present genetic diversity, with the frequency of observed heterozygotes close to the expected heterozygotes. Carrasco (2012), working with 211 samples of cassava in three municipalities in the state of Mato Grosso, with 14 SSR loci, using the polyacrylamide technique, obtained a total of 49 alleles, with a mean of 3.79 alleles per loco, with observed and expected heterozygosity values of 0.60 and 0.59, respectively. Silva et al (2016), analyzing 11 SSR loci, also based on the polyacrylamide technique, amplified 67 alleles in 22 cassava registers, with a mean of 6.09 alleles per loci, the expected and observed mean for heterozygosis being 0.65 and 0.61.…”

Section: Genetic Diversity Among Cassava Ethno-varietiesmentioning

confidence: 99%

Research Article Genetic diversity and population structure of cassava ethno-varieties grown in six municipalities in the state of Mato Grosso, Brazil

Tiago¹,

Hoogerheide²,

Pedri³

et al. 2019

Genet. Mol. Res.

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©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 18 (4): gmr18357 A.V. Tiago et al. 2 (SSRY47), with a mean of 0.680. The expected and observed heterozygosity showed an average of between 0.717 and 0.688, for SSRY126 and SSRY47, respectively. The heterozygosity values observed were higher than those expected in five of the six populations, generating negative values of the fixation index (-0.070). Among the six populations, Alta Floresta and Cuiabá had the highest percentage of polymorphic loci (100%). The groupings obtained by UPGMA, Structure and PCoA among the six populations were concordant in allocating the individuals into two genetic groups. We found considerable genetic diversity among the samples, evidenced by the high values in the diversity indices. These high values are possibly related to the management of the fields and the exchange of propagative material among the farmers. Therefore, it is proposed that both populations be conserved since they have potential that could be used for genetic improvement of this essential crop.

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“…Estudos mostram que as roças são unidades básicas evolutivas locais (Carrasco, 2012;Tiago et al, 2016;Zago et al, 2017; Research, Society and Development, v. 11, n. 7, e10211729731, 2022 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v11i7.29731 3 Oler, 2017;Pedri et al, 2019), onde atuam os processos de geração, amplificação e manutenção da diversidade de etnovariedades de mandioca (Faraldo et al, 2000).…”

Section: Introductionunclassified

Levantamento e caracterização fenotípica de etnovariedades de mandioca cultivadas em assentamentos rurais no estado de Mato Grosso, Brasil

Silva

Cordeiro

Tiago

et al. 2022

RSD

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A mandioca apresenta ampla diversidade genética, a qual é cultivada, em grande parte, por agricultores familiares. O presente estudo objetiva realizar um levantamento e caracterizar fenotipicamente as etnovariedades cultivadas por agricultores familiares em assentamentos rurais no Estado de Mato Grosso. O estudo foi conduzido em três assentamentos, Nossa Senhora Aparecida (NSA) e Júlio Firmino Domingues (JFD), no município de Alta Floresta, e assentamento São Pedro (ASP), em Paranaíta. As etnovariedades cultivadas nas propriedades foram caracterizadas, utilizando 13 descritores qualitativos. Foi calculada a frequência de cultivo das etnovariedades e a frequência das classes fenotípicas de cada descritor. Para caracterização da diversidade fenotípica, as variáveis qualitativas foram analisadas como multicategóricas, com múltiplas classes e agrupadas pelo método UPGMA, através do programa Genes. Foram visitadas 33 propriedades, nas quais se identificaram 76 etnovariedades cultivadas nos três assentamentos. Dessas, a etnovariedade “cacau” foi a mais frequente, registrada em 69,7% das propriedades, portanto, consiste na etnovariedade dominante. A caracterização fenotípica apresentou um total de 44 classes, evidenciando variabilidade fenotípica entre as etnovariedades avaliadas. O agrupamento UPGMA formou nove grupos, sendo o grupo GI o mais representativo (72,37%). Os grupos GVIII e GIX foram compostos por uma etnovariedade cada, ASP59 (roxa de fritar) e JFD40 (amarela), respectivamente. Foram identificadas 21 etnovariedades com diferentes denominações, das quais 15 são consideradas raras, por apenas aparecerem citadas um ou duas vezes pelos agricultores. O UPGMA realizado por meio da análise de caracterização fenotípica evidenciou uma ampla diversidade de etnovariedades nas propriedades dos agricultores, tidas como unidades mantenedoras e locais de conservação.

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Diversidade genética de variedades tradicionais de mandioca (Manihot esculenta Crantz) cultivada em comunidades da Baixada Cuiabana em Mato Grosso por meio de microssatélites

Cited by 10 publications

References 23 publications

Molecular Genetic Diversity of Manioc (Manihot esculenta Crantz) Using Simple Sequence Repeated Markers (SSR) in the Kara Region of Togo

Molecular Genetic Diversity of Manioc (Manihot esculenta Crantz) Using Simple Sequence Repeated Markers (SSR) in the Kara Region of Togo

Research Article Genetic diversity and population structure of cassava ethno-varieties grown in six municipalities in the state of Mato Grosso, Brazil

Levantamento e caracterização fenotípica de etnovariedades de mandioca cultivadas em assentamentos rurais no estado de Mato Grosso, Brasil

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