Fusaria and Fusarium mycotoxins in leaves and ears of maize plants 2. A time course study made in the Waikato region, New Zealand, in 1997

摘要

Abstract The patterns of fungal infection and mycotoxin contamination in leaf and ear sections of plants of two maize (Zea mays L.) hybrids, one resistant to mycotoxin accumulation under New Zealand conditions (Pioneer 3902 (P3902)) and one less so (Pioneer 3751 (P3751)), have been measured. Sampling commenced early in the season, well before ear and tassel formation, and continued until harvest. A number of fungi were isolated, the most common overall being Fusarium. Most common in leaf fractions were Epicoccum, Fusarium, and Alter‐naria, whereas in ear fractions the most common were Fusarium, Penicillium, Cladosporium, and Mucor. The most common fusaria isolated from leaf fractions were the toxigenic species F. crookwellense and F. graminearum. These species were evident from late February although other, non‐toxigenic, species were present in leaf axils from early January. For ear fractions the most common species were F. graminearum, F. crookwellense, and F. subglutinans. Fusarium infection was eviden...