Avaliação da qualidade fisiológica de sementes de canola produzidas a partir de plantas infectadas pelo Cauliflower mosaic virus (CaMV)

Abstract

The cultivation of canola (Brassica napus) has been implemented in the cerrado region of Minas Gerais since 2014 as a new alternative for crop rotation. However, the knowledge on biotic and abiotic factors that affect the crop productivity in the cerrado conditions remains scarce. Cauliflower mosaic virus (CaMV) has already been identified causing losses in field conditions; however, the impact of the virus infection on the physiological quality of seeds remains largely unknown. In this context, the present work aimed to analyse the physiological quality of canola seeds produced from CaMV inoculated plants. Canola plants were mechanically inoculated in an insect-proof greenhouse and the seeds were harvested at physiological maturation. The thousand seed mass (TSM) and aspects related to germination were evaluated according to the guidelines established in the Rules of Seed Analysis. The analysis of the results indicated that the CaMV infection did not affect the TSM and germination, as well as obtaining healthy seedlings, abnormal seedlings and non-germinated seeds.