Mycorrhizal inoculation affects the phytochemical content in strawberry fruits/Inoculacao micorrizica afeta o conteudo de fitoquimicos em frutos de morango

• Published in: Acta scientiarum. Agronomy p. 227
• Main Authors: Cecatto, Ana Paula, Ruiz, Fatima Ma, Calvete, Eunice Oliveira, Ma, Palencia, Pedro
• Format: Journal Article
• Language: Spanish
• Published: Universidade Estadual de Maringa 01.04.2016
• ISSN: 1679-9275; 1807-8621
• DOI: 10.4025/actasciagron.v38i2.27932

The aim of this research was to evaluate the effect of the inoculation date of arbuscular mycorrhizal fungi on the fruit quality and the content of phytochemicals in a strawberry soilless growing system. The experiment was performed in Huelva (Spain) and was conducted in a greenhouse on the La Rabida Campus of Huelva University under natural light and temperature from October 2013 to June 2014. Three short-day strawberry cultivars ('Splendor', 'Sabrina' and 'Fortuna') were grown in polyethylene bags filled with coconut fibres. Randomized block design, with 3 repetitions and factorial arrangement (3 cultivars x 3 treatments), was established. Each replicate consisted of one bag with 12 plants supporting structures at 40 cm height. The treatments were: T1 = mycorrhizal inoculation in the transplantation; T2 = mycorrhizal inoculation 30 days after transplantation (DAT); and T0 = control treatment, without inoculation. Arbuscular mycorrhizal fungi inoculation significantly affected the contents of anthocyanin and phenolics. When the inoculation is performed in the transplantation, the fruits showed a high content of anthocyanin and total phenolics. The mycorrhizal inoculation influences decreasing the acidity in fruit throughout the growing season and increase firmness only during the early stage of production. Keywords: Fragaria x ananassa Duch., anthocyanin, phenolics, ascorbic acid. O objetivo do trabalho foi avaliar o efeito da epoca de inoculacao dos fungos micorrizicos arbusculares na qualidade dos frutos e no teor de fitoquimicos em sistema de cultivo sem solo de morangueiro. O experimento foi realizado em Huelva (Espanha) e foi conduzido em casa de vegetacao no Campus La Rabida da Universidade de Huelva, sob luz e temperatura natural, de outubro 2013 a junho de 2014. Tres cultivares de morangueiro de dias curtos (Splendor, Sabrina e Fortuna) foram cultivadas em sacos de polietileno preenchido com fibras de coco. Delineamento em blocos casualizados, com 3 repeticoes e arranjo fatorial, foi estabelecido. Cada repeticao consistiu de um saco com 12 plantas apoiadas em estruturas de 40 cm de altura. Os tratamentos foram: T1 = micorrizacao no transplante; T2 = micorrizacao 30 dias apos o transplante (DAT); e T0 = testemunha, sem inoculacao. A inoculacao de micorrizas afeta significativamente o conteudo de antocianina e compostos fenolicos. Quando a inoculacao e realizada no transplante, os frutos apresentaram elevado teor de antocianina e compostos fenolicos total. A inoculacao micorrizica influencia diminuindo a acidez das frutas durante todo o ciclo de producao e aumenta a firmeza apenas durante a producao precoce. Palavras-chave: Fragaria x ananassa Duch., antocianinas, fenolicos, acido ascorbico.