Inoculation of arbuscular mycorrhizal fungi as a strategy to improve annatto (Bixa orellana L.) growth

• Published in: Acta scientiarum. Biological sciences 2021, Vol.43 (1), p.1
• Main Authors: Pontes, Marilia Malta Cavalcante Mendes, Oliveira, Jose de Paula, Barreto, Maria do Carmo Silva, Carvalho, Eric Xavier de, Mergulhao, Adalia Cavalcanti do Espirito Santo, Silva, Maria Luiza Ribeiro Bastos da, Antunes, Jadson Emanuel Lopes, Araujo, Ademir Sergio Ferreira de, Figueiredo, Marcia do Vale Barreto
• Format: Article
• Language: English
• Subjects: spores; inoculation; colonization; AMF
• ISSN: 1679-9283; 1807-863X
• DOI: 10.4025/actascibiolsci.v43i1.54742

This study aimed to assess the occurrence of arbuscular mycorrhizal fungi (AMF) in annatto (Bixa orellana L.) cultivars and their response to AMF inoculation using biometric parameters. The occurrence surveys were conducted in annatto fields in three municipalities from Pernambuco Forest Zone: Lagoa de Itaenga, Gloria de Goitá, and Vitoria de Santo Antão, and in four cultivars (Red Piave, Green Piave, Red Peruvian Paulista, and Green Peruvian Paulista). In a greenhouse, biometric parameters of annatto seedlings of Red Piave, Red Peruvian Paulista, Embrapa-36, and Embrapa-37 cultivars inoculated with AMF isolated from annatto fields. The Red Piave cultivar exhibited greater root colonization than the Green Peruvian Paulista in the Lagoa de Itaenga and Vitoria de Santo Antão municipalities. The cultivar Red Piave showed a more beneficial association with AMF in plants and soil than cultivar Green Peruvian Paulista did, in both Lagoa de Itaenga and Vitoria de Santo Antão. AMF inoculation was effective in promoting the growth of annatto plants, particularly those inoculants with S. heterogama and C. etunicatum.