Genetic basis of the resistance of a passion fruit segregant population to Cowpea aphid-borne mosaic virus (CABMV)

Freitas, J.C.O.; Viana, Alexandre Pío; Santos, Eileen Azevedo; Silva, Fernando H. L.; Paiva, Claudia Lougon; Rodrigues, Rosana; Souza, Margarete Magalhães; Eiras, Marcelo

doi:10.1007/s40858-015-0048-2

Cited by 36 publications

(33 citation statements)

References 18 publications

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“…Breeding methods based on family performance are more appropriate Biosci. J., Uberlândia, v. 34, supplement 1, p. 58-70, Dec. 2018 than those based on individual performance (FREITAS et al, 2015). Seventy significant phenotypic correlations were observed, with valuesvarying between 0.34 and 0.99.…”

Section: Resultsmentioning

confidence: 93%

Agronomic characterization and genetic parameter estimation in yellow passion fruit

Moreira¹,

Costa²,

Peixoto³

et al. 2018

Biosci. J.

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The selection of yellow passion fruit (Passiflora edulis Sims) genotypes with high yield and fruit quality is essential for the development of passion fruit crop in the country. Therefore, the objective of this study was to evaluate the agronomic performance and estimate the genetic parameters of 32 yellow passion fruit genotypes cultivated in the Federal District, Brazil. The experiment consisted of randomized block design with 32 treatments, eight plants per plot, and four replications. Fruits were classified based on their equatorial diameter. Yield, number of fruits per hectare, and fruit weight were evaluated. Genotypes MAR20#23 and UnB-P7 presented the highest total yield, and MAR20#23 also showed the greatest total number of fruits per hectare. BRS GA1 and MAR20#23 had the best performance for industrial purposes dues to the fruits of smaller diameter classes. UnB-P7, AR-01, and MSC were more indicated for in natura consumption owing to the fruits of greater diameter classes. The high magnitude estimates for heritability and genetic variation coefficients indicate the possibility of greater genetic gains with direct selection for yield and number of fruits of 1C diameter class. Significant phenotypic correlations were observed, indicating the possibility of indirect selection for number of fruits, fruit weight, and yield.

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Section: Resultsmentioning

confidence: 93%

Agronomic characterization and genetic parameter estimation in yellow passion fruit

Moreira¹,

Costa²,

Peixoto³

et al. 2018

Biosci. J.

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“…Research has been conducted on the development of resistance through interspecific hybridization (Di Piero et al, 2010;Correa et al, 2015;Freitas et al, 2015). The State University of Northern Rio de Janeiro (UENF) stands out in this scenario for having a wellstructured passion-fruit breeding program -the only one in the Brazil -, which in the last 10 years has focused on obtaining varieties resistant to the disease with desirable agronomic traits .…”

Section: Introductionmentioning

confidence: 99%

“…Interspecific hybrids with great potential for morpho-agronomic traits and resistant to the virus were selected . Later, Freitas et al (2015) developed studies on inheritance of resistance with the first-backcross population and concluded that resistance is complex, discarding the hypothesis of polygenic inheritance. In this regard, the morphological and agronomic characterization of this backcross population of passion fruit using descriptors is essential, in the breeding program, to aid in the selection of genotypes that meet the interest of the breeder and to direct future crosses.…”

Section: Introductionmentioning

confidence: 99%

Research Article Characterization of a segregating population of passion fruit with resistance to Cowpea aphid-borne mosaic virus through morpho-agronomic descriptors

Santos¹,

Viana²,

Preisigke³

et al. 2019

Genet. Mol. Res.

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In passion-fruit breeding programs, characterizing genotypes developed through morpho-agronomic descriptors helps quantify genetic diversity and identify individuals with desirable qualities. We examined the discriminatory ability of passion-fruit descriptors and determined their relative importance in the characterization of 91 genotypes from a breeding program for resistance to Cowpea aphid-borne mosaic virus. Twenty-four quantitative and 14 multi-category qualitative descriptors related to plant, leaf, flower, and fruit characteristics were used. The quantitative descriptors were subjected to correlation and principalcomponent analyses and selected based on direct selection and the Singh method. The traits were used to obtain a distance matrix, based on Gower's algorithm, and a comparative clustering between the dendrograms for the morpho-agronomic variables was obtained using the unweighted pair group method with arithmetic mean procedure. Based on the principal components method, the traits that most contributed to genetic variability were number of seeds (23.241%), petiole length (19.438%), and petal width (10.440%). In its turn by the Singh method, the traits androgynophore length (6.68%), ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 18 (2): gmr18255 V.O. dos Santos et al. 2followed by flower length (5.47%), area under the disease progress curve (5.27%), and peduncle length (5.17%) were those which most contributed to the differentiation of genotypes. Although seven descriptors (leaf length, bract width, corona long filament length, sepal length, fruit width, fruit mass, and mass of fruit pulp) showed little contribution to the characterization of genotypes, their discard is not suggested, as they significantly contribute to the discrimination of genetic divergence in the population. Comparative analysis between the dendrogram containing all descriptors and the dendrogram containing only flower, leaf, or fruit descriptors evidenced the need for using a large number of descriptors in the characterization of genetic diversity in Passiflora. The use of all 38 descriptors increased the efficiency in the discrimination of groups.

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“…There is no genetic variability for resistance to CABMV within the commercial species P. edulis. Thus, breeding programs resort to wild species to elevate the resistance level of commercial cultivars through interspecific hybridizations (Fonseca et al 2009;Freitas et al 2015;Santos et al 2015 b).…”

Section: Introductionmentioning

confidence: 99%

Selection strategies in a segregating passion fruit population aided by classic and molecular techniques

et al. 2020

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Combining the use of agronomic, disease-resistance, and molecular information can greatly contribute to genetic progress in breeding programs. This study was developed to estimate the genetic distance between genotypes derived from backcrosses and their parents using morphoagronomic and molecular information and information pertaining to resistance to the Cowpea aphid-borne mosaic virus (CABMV), and indicate genotypes with potential for generation advancement. The studied population consisted of 91 genotypes from the first backcross, one interspecific hybrid, and the species Passiflora setacea and P. edulis. For morphoagronomic characterization, the traits number of fruits, total fruit weight, average fruit weight, and area under the disease progress curve (AUDPC, related to resistance to CABMV) were evaluated. Fourteen microsatellite primers were used to estimate genetic diversity among the genotypes, estimate diversity parameters and quantify the proportion of parental genome in the evaluated genotypes. The use of morphoagronomic and molecular information revealed the existence of genetic variability among the genotypes. The mean number of alleles is close to that expected for the population. Observed heterozygosity (0.42) was higher than the expected heterozygosity (0.30), indicating an elevated number of heterozygous individuals in the population. Due to their good agronomic performance, resistance to the virus, and genotypic and phenotypic distinction, genotypes 484 and 312 are recommended to compose the future stages of the passion fruit breeding program aimed at resistance to CABMV.

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Genetic basis of the resistance of a passion fruit segregant population to Cowpea aphid-borne mosaic virus (CABMV)

Cited by 36 publications

References 18 publications

Agronomic characterization and genetic parameter estimation in yellow passion fruit

Agronomic characterization and genetic parameter estimation in yellow passion fruit

Research Article Characterization of a segregating population of passion fruit with resistance to <i>Cowpea</i> <i>aphid-borne</i> <i>mosaic</i> <i>virus</i> through morpho-agronomic descriptors

Selection strategies in a segregating passion fruit population aided by classic and molecular techniques

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