บทคัดย่องานวิจัย

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Fusarium oxysporum proliferatum and Fusarium oxysporum infection of commercial asparagus spears originates from infected crowns in the field.

Guerrero, C.; Nigh, E. L., Jr.; Stanghellini, M. E.;

Acta Horticulturae Year: 1999 Issue: No. 479 Pages: 227-230 Ref: 11 ref.

1999

บทคัดย่อ

Fusarium oxysporum proliferatum and Fusarium oxysporum infection of commercial asparagus spears originates from infected crowns in the field.

 

It has been established that marketable asparagus spears are infected with Fusarium species. In the desert asparagus growing areas of Mexico and southern California, USA, average spear infection ranges from 15 to 98%. Of these infected spears, 78% contained F. proliferatum and 22% contained F. oxysporum. To determine the infection source, 2 declining fields in Imperial Valley, California, USA, were randomly sampled by removing pieces of crown and emerging spears. Results showed that 62% of the crowns were infected with F. proliferatum and 37% were infected with F. oxysporum. Some 62% of spears removed from the same crowns were infected by F. proliferatum and 38% with F. oxysporum. Results of this study suggest that the source of spear infection by F. proliferatum and F. oxysporum is from infected crowns and not from normal postharvest operations.