Genetic diversity analyses of rubber tree genotypes based on UPOV descriptors

Sant’Anna, Isabela de Castro; Cruz, Cosme Damião; Gouvêa, Lígia Regina Lima; Scaloppi, Erivaldo José; Freitas, Rogério Soares de; Gonçalves, Paulo de Souza

doi:10.1016/j.indcrop.2021.113416

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…Breeding is highly dependent on the genetic diversity available within the species under evaluation (Sant' Anna et al, 2021). In our study, it was possible to characterize and estimate the genetic diversity among 41 accessions of P. notatum Flügge, studied using characteristics of multicategory origin (Table 1).…”

Section: Discussionmentioning

confidence: 99%

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Characterization and genetic diversity in Paspalum notatum Flügge accessions: Morphological and geographical distance

Steiner¹,

Weiler²,

Brunes³

et al. 2022

Revista Brasileira De Zootecnia

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The objective of this work was to describe morphology and grouping of Paspalum notatum accessions, based on multicategorical data which discards the redundant variables for quantification of genetic diversity. We also tested the hypothesis that geographical distance was correlated with morphological divergence. In our study, multivariate analyzes successfully demonstrated the geographic and morphological variability of the P. notatum accessions characterized. Many of these evaluated accessions can be included in future genetic improvement programs. Based on two methodologies for discarding variables, it was possible to identify the potentially important morphological characteristics from genetic diversity studies and characterize new accessions aimed at improving forage and seed production. The methodologies used to discard variables are biometric tools that can be used successfully in future plant breeding programs, especially when a large number of traits and accessions are being evaluated. Although significant, geographic distance had a low association with morphological traits. This indicated the need to use other characteristics, such as forage and seed yield, in addition to molecular analysis. Our analyzes showed genetic variability in P. notatum for all the characteristics studied.

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Section: Discussionmentioning

confidence: 99%

“…In addition, the concomitant use of different clustering methods (optimization and UPGMA) confers greater efficiency in the discrimination of accessions in terms of their genetic distances (Nardino et al, 2017) and are widely used in studies of genetic divergence (Sant' Anna et al, 2021;Silveira et al, 2022a).…”

Section: Discussionmentioning

confidence: 99%

Characterization and genetic diversity in Paspalum notatum Flügge accessions: Morphological and geographical distance

Steiner¹,

Weiler²,

Brunes³

et al. 2022

Revista Brasileira De Zootecnia

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show abstract

“…O Brasil já foi o maior produtor e exportador de borracha natural, mas, atualmente, importa a maior parte que consome. Países do Sudeste Asiático são os maiores produtores de borracha natural (Sant' Anna et al, 2021). Apesar disso, a produção de borracha nacional vem crescendo nos últimos anos com a participação importante do estado de São Paulo, que é o maior produtor nacional e possui 49,1% de toda a área brasileira destinada à colheita (75.179 hectares) e 68,2% do volume produzido (227.163 toneladas) de látex coagulado.…”

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