Abstract
Elionurus muticus naturally occurs in southern Brazil and its economic potential is due to the presence of essential oils. There are few studies about this genus. Thus, the aim of the present study was to characterize native E. muticus populations. The study was performed with five "capim-carona" populations collected in the state of Rio Grande do Sul, totaling 50 plants grown in pots in the Agronomy School. All five E. muticus populations presented variability for phenotypic traits and phenolic compound concentration. The presence of citral was identified in all populations, except in that from the "Morro da Polícia" region. RAPD analysis showed high variability for these populations, allowing the separation of individuals into five groups according to their geographic origin. The highest variability occurred within each population. Based on the results, the populations from São Borja and Agronomy School can be recommended to be used in breeding programs.
Highlights
The genus Elionurus, Humb. & Bompl exWilld, belongs to the Poaceae family, comprises about 15 species and is common in the tropical and subtropical regions of South America, Africa, Australia (Araújo, 1971; Renvoize, 1978) and Temperate Asia (Watson & Dallwitz, 2002)
Elionurus muticus naturally occurs in Brazil, where it is known as “capimcarona” (Longhi-Wagner et al, 2001)
The presence of neral and geranial in E. muticus has only been detected for Southern Brazilian populations, whereas in the remaining Brazilian regions only camphene (11.5%), E-caryophyllene (17.9%) and spathulenol (18.6%) have been reported as major oil components (Scramim & Saito, 2000)
Summary
Belongs to the Poaceae family, comprises about 15 species and is common in the tropical and subtropical regions of South America, Africa, Australia (Araújo, 1971; Renvoize, 1978) and Temperate Asia (Watson & Dallwitz, 2002). The presence of neral and geranial in E. muticus has only been detected for Southern Brazilian populations, whereas in the remaining Brazilian regions only camphene (11.5%), E-caryophyllene (17.9%) and spathulenol (18.6%) have been reported as major oil components (Scramim & Saito, 2000). Despite such a demand, little is known about the chemical composition, biological activity and cultivation of E. muticus. The aim of this study was to analyze the variability of morphological traits, phenolic compounds and citral concentration of the essential oil from five Elionurus muticus populations collected in southern Brazil
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