On farm management of Acca sellowiana (Myrtaceae) as a strategy for conservation of species genetic diversity

Donazzolo, Joel; Stefenon, Valdir Marcos; Guerra, Miguel Pedro; Nodari, Rubens Onofre

doi:10.1016/j.scienta.2019.108826

Cited by 20 publications

(28 citation statements)

References 26 publications

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“…In addition, the 12 accessions identified as “Exterior” in this study originated from four countries (Supplemental Table S1) and are genotypes of Uruguay type, with a narrow genetic base, as previously reported (Dettori & Palombi, 2000; Ducroquet et al., 2000; Nodari et al., 1997; Thorp & Bieleski, 2002). Other studies detected lower genetic (Donazzolo et al., 2020) and phenotypic diversity (Borsuk et al., 2017; Sánchez‐Mora et al., 2019) in the Uruguay type compared with the Brazil type. Furthermore, the genetic distances amongst the Uruguay type accessions are smaller compared with the Brazil type accessions, as documented in the present study and by previous studies (Borsuk, 2018; Donazzolo, 2012; Donazzolo et al., 2020).…”

Section: Discussionmentioning

confidence: 87%

“…In situ on farm, the populations of the participatory genetic breeding (Donazzolo et al., 2020; Santos, Donazzolo, Guries, Peroni, & Nodari, 2017) are of greater interest for conservation since they are mainly cultivated in agroforestry systems in Ipê, Antônio Prado, and Monte Alegre dos Campos‐RS. Overall, those populations store 26 alleles, most of which are missing from the AGB‐Feijoa.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

et al. 2020

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Feijoa [Acca sellowaiana (O. Berg) Burret], also known as pineapple guava or goiabeira‐serrana, is a species of the Myrtaceae family native to southern Brazil and Uruguay. The genetic diversity of feijoa's natural populations has been studied and is relatively well‐documented; however, the genetic diversity of feijoa accessions in the largest active germplasm bank (AGB) in Brazil, and is still poorly documented. Characterizing and conserving pineapple guava accessions present in the AGB is essential for developing breeding programs and conserving the diversity of the species. Thus, the objective of this study was to characterize the genetic diversity of all accessions using eight microsatellite markers. The AGB collection includes accessions from 26 municipalities in Brazil, New Zealand, the United States, Israel, and Uruguay; selected clones, and selections of directed crossings, totaling 313 accessions. Genotyping 309 of these accessions with eight microsatellite markers revealed 119 alleles. Polymorphism information content (PIC) values varied between .466 (ASE40) and .890 (ASE34) with an overall mean of .718. This genotyping confirms the existence of two main types or biotypes in the species, denoted as the Uruguay type and Brazil type. Also, a significant proportion of the feijoa diversity, which is absent from the AGB‐Feijoa collection, is present in germplasm maintained by indigenous people, quilombola communities, federal conservation units, participatory genetic breeding, and areas of natural occurrence, thus reinforcing the need to introduce new accessions into São Joaquim's AGB‐Feijoa.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

et al. 2020

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“…In-situ approaches need local supports to have a chance of success. Promoting awareness of management, monitoring, and evaluation genetic resources also requires financial factors and local benefits [16].…”

Section: Fig 2 Composition Of Local Rice Varieties In Central Javamentioning

confidence: 99%

Diversity of local food crops in Central Java

Aristya

Supriyo

2021

E3S Web Conf.

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Food needs serious handling in responding to the challenges of environmental changes and population growth. The diversity of local food crops has the advantage as a source of nutrition and breeding materials. The research aims to determine diverse local food crops in Central Java. A total of 120 farmers were selected by purposive random sampling from Tegal, Brebes, Banjarnegara, and Karanganyar regency, based on different agro-ecological sequences. The field inventory found 257 varieties of 11 types of exotic crops. The compositions of local rice varieties (Indica and Javanica) included seven red rice, nine black rice, 27 white rice, 17 glutinous rice, one animal feed rice, three upland rice, and eight aromatic ones. The frequency of the species distribution rate proves was very narrow in Tegal-Brebes, limited in Banjarnegara, and spread evenly in Karanganyar. The Shannon Diversity Index revealed the diverse species in a region. Banjarnegara had the highest species abundance index. The relationship between the Shannon Diversity Index and Equitability Index illustrates the dominant types of local food plants, especially in Karanganyar dominated by rice. The Sorensen Similarity Coefficient was used to estimate the level of structural similarity between species and regions. Tegal-Brebes have similar species composition and agro-ecological.

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“…According to Donazzolo et al (2020), the genetic diversity of feijoa is distributed from Paraná State in Brazil to Uruguay, with special consideration to the region of the Rio Grande do Sul highlands, where it was reported occurring at lower altitudes than in Santa Catarina. This wide distribution may include the presence of different alleles and allelic associations, indispensable for the development of cultivars more adapted to different environments of the altitude areas for which the studies has been developed, especially concerning anthracnose resistance.…”

Section: /7mentioning

confidence: 99%

Pathogenicity and susceptibility/resistance reaction of feijoa (Feijoa sellowiana) cultivars to anthracnose

Fantinel

Muniz

Poletto

et al. 2020

Agraria

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The objective of this study was to determine the pathogenicity of Colletotrichum theobromicola, C. siamense and C. fructicola, C. nympahaeae and C. pseudoacutatum to feijoa, as well as to study the susceptibility/resistance reaction of the commercial cultivars "Alcântara", "Helena", "Mattos", and "Nonante" to anthracnose. For that, spore suspensions (106 spores mL-1) of the Colletotrichum isolates were prepared from colonies grown for seven days in Mathur medium. Ten fruits at the medium stage of development of each cultivar were used for the inoculation of each isolate. First the fruits were disinfested superficially, then they were accommodated in polypropylene trays and the suspension was applied in three places on the fruit's surface, without injury. All those species are pathogenic to feijoa, as they reproduced the original symptoms of anthracnose. The susceptibility of cvs. "Helena" and "Nonante" were influenced by the specific variability of the pathogen. The cv. "Alcântara" is susceptible and cv. "Mattos" is resistant to all tested Colletotrichum species. Thus, cv. "Mattos" is the most suitable feijoa cultivar to reduce anthracnose levels in orchards in a conventional, integrated or organic cultivation system.

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On farm management of Acca sellowiana (Myrtaceae) as a strategy for conservation of species genetic diversity

Cited by 20 publications

References 26 publications

Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

Diversity of local food crops in Central Java

Pathogenicity and susceptibility/resistance reaction of feijoa (Feijoa sellowiana) cultivars to anthracnose

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