Morphological diversity and identification of accessions of melon

Amorim, C. C. de; Queiróz, M. A. de; Aquino, Iana Priscila Freitas de; Oliveira, R. S. de; Santos, Simone de Souza; Barbosa, G. da S.

doi:10.5897/ajar2016.11211

Cited by 3 publications

(19 citation statements)

References 16 publications

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“…The data of analysis of variance showed significant differences among melon sub-accessions for all characteristics evaluated (Table 2), denoting the existence of genetic variability among sub-accessions. Similar results were found in previous studies on melon accessions from traditional agriculture (AMORIM et al, 2016;MACÊDO et al, 2017;ANDRADE et al, 2019), supporting those found in the present study and, therefore, denoting the possibility of selecting agronomically superior accessions for the characteristics analyzed (CRUZ; REGAZI; CARNEIRO, 2012). Means followed by same lowercase letter in the columns, or uppercase letter in the rows, are not statistically different from each other by the Scott Knott test at 5% significance.…”

Section: Resultssupporting

confidence: 93%

“…Prolificacy and fruit cavity diameter presented only 18.5% variation, highlighting the variety makuwa and botanical varieties not defined (ND), respectively. Regarding the other characteristics, the highest variations were found for sub-accessions of ND varieties (Table 2); these variations are probably because of the high variability among plants within the sub-accessions, which is due to the introgression of alleles among different botanical varieties (MACÊDO et al, 2017;AMORIM et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…Two experiments were conducted, one in 2019 and another in 2020, at the Experimental Field of the Department of Technology and Social Sciences of the Bahia State University (DTCS/UNEB), in Juazeiro, Bahia, Brazil (09°25'04.92271''S and 40°29'04.73710''W, and altitude of approximately 352 meters). Twenty-seven melon subaccessions (AMORIM et al, 2016) (S 2 generation) from the botanical varieties momordica, cantalupensis, and makuwa and some accessions not identified were evaluated. These accessions were from the traditional agriculture of the state of Maranhão, Brazil (Table 1) that were stored in the Active Germplasm Bank of Cucurbitaceae from the Northeast Region at the Brazilian Agricultural Research Corporation (Embrapa Semiarid), in Petrolina, Pernambuco.…”

Section: Methodsmentioning

confidence: 99%

“…Previous studies using melon germplasm from family farming showed the existence of high variability among melon accessions (DANTAS et al, 2012;ARAGÃO et al, 2013;AMORIM et al, 2016;MACÊDO et al, 2017;ANDRADE et al, 2019). However, some important characters for the improvement of melon were not emphasized in these studies, mainly regarding characteristics of some botanical varieties (PITRAT; HANELT; HAMMER, 2000), which are believed to be important factors and, therefore, should be considered.…”

Section: Introductionmentioning

confidence: 98%

“…Melons from traditional agriculture are an important source of alleles for breeding programs. Although several studies have shown variability among melon accessions (AMORIM et al, 2016;MACÊDO et al, 2017), there is no study on this germplasm, focused on generating information for selection of genotypes. It denotes the need for studies using melon germplasm from family farmers for morphological characterization of different botanical varieties based on genetic parameters, focused on selecting superior genotypes.…”

Section: Introductionmentioning

confidence: 99%

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Genetic parameters in melon sub-accessions from traditional agriculture

et al. 2023

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Family farming in Brazil holds a high diversity of melon germplasm, composing an important source of alleles for breeding programs. Thus, the objective of this study was to estimate genetic parameters and select genotypes from a population of melon sub-accessions from different botanical varieties grown by family farmers, based on morphological parameters. Two experiments were conducted, one in 2019 and another in 2020, in a complete randomized block design, with three replications and five plants per plot, using 27 melon sub-accessions (generation S2) from family farmers, and a commercial variety. Nine quantitative descriptors were evaluated. Assumptions of ANOVA were tested, followed by individual and joint analyses of variance. Significant differences were found among sub-accessions for all descriptors evaluated, with heritabilities higher than 83% and significant genotype-environment interactions for 88.8% of the characteristics evaluated. Thus, genetic variability was found among sub-accessions, with predominance of genetic effects over environmental effects, denoting the possibility to obtain genetic gains by the improvement of several characteristics of agronomic interest. The sub-accessions BGMEL66.0, BGMEL111.0, and BGMEL112.0 are recommended for inclusion in breeding programs focused on obtaining good prolificacy and small fruits with high soluble solid contents. BGMEL sub-accessions (108.3 and 108.5) can generate progenies with high prolificacy, and sub-accessions of the variety momordica can be used for generation of progenies focused on shortening the crop cycle and increasing fruit size.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Genetic parameters in melon sub-accessions from traditional agriculture

et al. 2023

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Morpho-agronomic diversity and botanical identification of melon accessions from northeastern Brazil

et al. 2023

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Melon (Cucumis melo L.) crops are grown in the Semiarid region of Brazil by small, medium, and large farmers, focused on domestic and international markets. However, melon is also grown by family farmers using their own seeds, which are important germplasm for melon breeding programs. Samples of these seeds were collected and stored in the Active Germplasm Bank of Cucurbitaceae from the Northeast Region at the Brazilian Agricultural Research Corporation (Embrapa Semiarid), and require more thorough studies for a better understanding of the existing variability. Thus, the objective of this work was to characterize sub-accessions and their respective endogamic progenies to assess the genetic variability between and among these accessions. Two experiments were conducted in a randomized complete block design, with three replications, using 11 quantitative and 8 qualitative descriptors: the first using seeds from 17 accessions from natural pollination, and the second using seeds from S1 progenies. Morphological data were used for comparisons between generations. The 17 accessions evaluated originated 24 sub-accessions, denoting variability between and among accessions and sub-accessions. A dendrogram developed based on the Unweighted Pair Group Method with Arithmetic Mean (UPGMA) showed the existing variability and, according to the newest melon classification, the groups identified were: makuwa, subgroup nashi-uri; and momordica and cantalupensis, subgroup prescott. The results showed a probable existence of introgression of alleles between different botanical groups, and some sub-accessions were not identified regarding their group by presenting variations in morphological characteristics, indicating the presence of new botanical groups.

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Genetic divergence between sub-accessions of the melon using molecular markers

Amorim¹,

Silva²,

Bordallo³

et al. 2022

Revista Ciência Agronômica

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The melon (Cucumis melo L.) is one of the most important horticultural crops in the northeast of Brazil. The characterisation of germplasm is an effi cient process for managing plant genetic resources, as it contributes to better conservation and improved use in breeding programs. In the present study, the genetic divergence between sub-accessions of the melon taken from traditional agriculture in the semi-arid region of Brazil was evaluated using ISSR and RAPD markers, verifying the level of agreement with the botanical classifi cation. Twenty-six sub-accessions preserved in the Active Germplasm Bank of Cucurbitaceae for the northeast of Brazil, located at Embrapa Semiárido in Petrolina, Pernambuco, were analysed. The binary matrix of the molecular data was used to obtain the genetic dissimilarities using the complement of the Jaccard index. The genetic dissimilarities were represented in dendrograms generated using the UPGMA method. Twenty-eight ISSR primers and 26 RAPD primers were polymorphic. A total of 686 fragments were obtained, of which 451 were polymorphic. The mean polymorphism of the RAPD markers was greater than that of the ISSR markers. The number of markers was considered suffi cient to accurately determine the genetic diversity. The ISSR dendrogram allowed the formation of three groups, the RAPD dendrogram, four groups, and the joint dendrogram, three groups. The study demonstrated the genetic variability between the sub-accessions, and the strong association between the characterisation made by the molecular markers and the taxonomic classifi cation of the genotypes under study.

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Morphological diversity and identification of accessions of melon

Cited by 3 publications

References 16 publications

Genetic parameters in melon sub-accessions from traditional agriculture

Genetic parameters in melon sub-accessions from traditional agriculture

Morpho-agronomic diversity and botanical identification of melon accessions from northeastern Brazil

Genetic divergence between sub-accessions of the melon using molecular markers

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