ABSTRACT Studies on the adaptability of raspberry cultivars to subtropical regions are needed since growth, yield, and fruit quality may differ from levels observed in temperate climates. This study evaluated the phenology, yield, physical-chemical attributes, and bioactive compounds of raspberries produced in a subtropical region of Brazil under an organic cropping system. The experiment was carried out in three production cycles 2018/2019, 2019/2020, and 2020/2021 in Pinhais, Paraná State, Brazil. We evaluated ten raspberry cultivars, eight primocanes (Alemãzinha, Autumn Bliss, Bababerry, Fallgold, Golden Bliss, Heritage, Indian Summer and Polana), and two floricane cultivars (Schoenmann and Willamette). Phenological evaluations were carried out weekly at the beginning and end of flowering and harvesting. The soluble solids content, titratable acidity, the pH, and bioactive compounds were analyzed. Primocane cultivars showed two flowering and fruiting periods, the first in spring/summer and the other in summer/autumn, except for the Indian Summer cultivar, which showed a floricane-fruiting behavior, bearing fruit only on one-year-old canes, like Schoenmann and Willamette cultivars. ‘Alemãzinha’ shows better adaptation to the region under study with higher yield and concentration of total polyphenols, but its fruits are small and acidic. ‘Heritage’ is also an option for cultivation in this region, even though it is less productive, as the fruits are larger, less acidic, and have high levels of bioactive compounds. Yellow cultivars Fallgold and Golden Bliss are good options for diversifying the color offer, with yields similar to ‘Heritage’ and with a high total soluble solids/titratable acidity ratio.

RESUMO Passiflora actinia Hook (nome popular: ‘maracujá-do-mato’) é uma espécie medicinal relevante devido às suas propriedades sedativas e ansiolíticas. Para uma exploração comercial da planta, no entanto, são necessários estudos de propagação, especialmente visando melhorar o enraizamento em estacas caulinares. O presente estudo foi desenvolvido para avaliar o efeito do extrato da alga marinha parda (Ascophyllum nodosum (L.) Le Jol.) aplicado na base de estacas caulinares de P. actinia. Foram avaliadas cinco concentrações do extrato diluído em água destilada: 0% (água destilada pura), 10%, 20%, 30% e 40%. O delineamento experimental foi o inteiramente casualizado com 4 repetições e 12 estacas por unidade amostral. As estacas foram avaliadas 45 dias após o plantio. Os dados foram analisados por meio de análise de regressão polinomial e coeficientes de correlação de Pearson foram calculados para todas as variáveis. Em média, verificou-se 51,27% de enraizamento. A porcentagem de enraizamento aumentou linearmente de acordo com as concentrações de extrato de alga marinha. Quando comparado ao tratamento controle, observou-se aumento de 10% no enraizamento quando as estacas foram tratadas com 40% de extrato de alga marinha. A resposta de retenção foliar às concentrações de A. nodosum também foi ajustada em modelo linear positivo. Um aumento de 15,6% na retenção foliar foi observado na concentração de 40% de extrato de alga quando comparado ao controle. Correlações positivas foram observadas para retenção de folhas e porcentagem de enraizamento e retenção de folhas e comprimento de raízes. A imersão das bases de estacas de P. actinia em extrato de A. nodosum em uma concentração de 40% pode promover efeitos positivos no enraizamento e facilitar a propagação desta espécie.

ABSTRACT Passiflora actinia Hook (common name: ‘maracujá do mato’) is an important medicinal species due to significant sedative and anxiolytic activities. In order to commercially exploit the plant, however, studies on propagation to improve rooting in stem cuttings are needed. The present study was designed to evaluate the effect of the brown seaweed (Ascophyllum nodosum (L.) Le Jol.) extract when applied on P. actinia stem cuttings bases. Five concentrations of the extract in distilled water were evaluated: 0% (pure distilled water), 10%, 20%, 30% and 40%. The experimental design was completely randomized with 4 repetitions and 12 cuttings per experimental unit. Cuttings were evaluated 45 days from planting. Data were analyzed through polynomial regression analysis and Pearson's correlation coefficients were calculated for all the variables. On average, 51.27% rooting was achieved. Rooting percentage increased linearly according to the brown seaweed extract concentrations. When compared to the control treatment, about 10% increase in rooting was observed at the treatment with 40% seaweed extract. Leaf retention response to A. nodosum increasing concentrations was also adjusted in a positive linear model. A 15.6% increase in leaf retention was observed at the 40% seaweed concentration when compared to the control. Positive correlations were observed for leaf retention and rooting percentage and leaf retention and roots length. The immersion of P. actinia stem cuttings bases in A. nodosum extract at a concentration of 40% promote positive effects on rooting and facilitate the species propagation.