Abstract
ABSTRACT: The aim of this research was to identify and quantify fungi infecting irrigated rice seeds produced in the 2015/16, 2016/17 and 2017/18 harvests in the pre-germinated system in the Alto Vale do Itajaí Region, Santa Catarina State, Brazil. A total of 479 lots of eight cultivars were analyzed. Seeds were disinfected and sown in potato-sucrose-agar culture medium with incubation for seven days at 25ºC ± 2ºC and photoperiod of 12 hours. The main fungus detected in the three crops season was Microdochium albescens with 54.9% of average incidence, followed by Alternaria padwikii (7.7%) and Bipolaris oryzae (3.3%).
Highlights
Fungos em sementes de arroz irrigado produzidas no sistema pré-germinado na região do Alto Vale do Itajaí, estado de Santa Catarina, Brasil
In the state of Santa Catarina (SC), irrigated rice (Oryza sativa L.) is produced in a pregerminated system widely sown in monoculture areas and in regions where long periods of wetness occur, factors that favor the occurrence of diseases (SOSBAI, 2018)
Microdochium oryzae; Gerlachia oryzae (Hashioka & Yokogi), Pyricularia oryzae (Cav.) and Sarocladium oryzae (Saw) some of the main pathogens associated with rice seed (MEW & GONZALES, 2002; SOSBAI, 2018)
Summary
Fungos em sementes de arroz irrigado produzidas no sistema pré-germinado na região do Alto Vale do Itajaí, estado de Santa Catarina, Brasil. The aim of this research was to identify and quantify fungi infecting seeds of irrigated rice cultivars produced in the pre-germinated system in the Alto Vale do Itajaí (AVI), SC, Brazil.
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