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dc.contributor.authorCOSTA, A. C. S. S.
dc.contributor.authorRIBEIRO, T. S.
dc.contributor.authorSANTOS, C. A. F.
dc.date.accessioned2026-08-06T14:47:31Z-
dc.date.available2026-08-06T14:47:31Z-
dc.date.created2026-08-06
dc.date.issued2026
dc.identifier.citationBrazilian Journal of Biology, v. 86, e306447, 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1188978-
dc.descriptionA simultaneous increase of the antioxidant vitamin C (VITC) and in the soluble solids/acidity ratio (TSS/ACI) may enhance guava quality and stimulate consumption. The present study aimed to estimate phenotypic correlations and perform path analysis using a causal diagram for VITC and TSS/ACI (dependent variables) and 11 other independent variables in progenies from the crosses [‘Pedro Sato’ × ‘Purple Guava’], [‘Pedro Sato’ × ‘Paluma’], and [‘Paluma’ × ‘Purple Guava’], to guide selection and breeding of new guava cultivars. A total of 295 progenies from the three crosses were evaluated over four production cycles for 13 physicochemical traits. Significant positive correlations between VITC and TSS/ACI were found, ranging from 0.140 to 0.227. Significant positive phenotypic correlations (‘r’) were estimated for VITC × TSS/ACI and significant negative correlations among VITC and TSS/ACI with total fruit yield and mean fruit weight. The direct effects of VITC to TSS/ACI and TSS/ACI to VITC were consistently positive and significant across all analyses, while the ‘r’ were not consistent, highlighting the limitations of the phenotypic correlations in explaining cause-and-effect relationships. The direct effect estimates indicate that a simultaneous increase in VITC and TSS/ACI is possible, though it may have a negative impact in total yield and mean fruit weight. Indirect selection for increased VITC can be achieved through selection for high TSS, or vice versa.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectCorrelação fenotípica
dc.titlePath analysis reveals simultaneous increase in vitamin C and soluble solids in guava progenies.
dc.typeArtigo de periódico
dc.subject.thesagroGoiaba
dc.subject.thesagroPsidium Guajava
dc.subject.thesagroVitamina C
dc.subject.thesagroMelhoramento Genético Vegetal
dc.subject.nalthesaurusPhenotypic correlation
dc.subject.nalthesaurusGuavas
riaa.ainfo.id1188978
riaa.ainfo.lastupdate2026-08-06
dc.identifier.doihttps://doi.org/10.1590/1519-6984.306447
dc.contributor.institutionA. C. S. S. COSTA, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; T. S. RIBEIRO, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; CARLOS ANTONIO FERNANDES SANTOS, CPATSA.
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