论文信息 - Observations on the life cycle and pathogenicity of Paralongidorus maximus in a forest nursery in Scotland

Observations on the life cycle and pathogenicity of Paralongidorus maximus in a forest nursery in Scotland

SUMMARY Soil samples from a forest nursery growing Scots pine were collected at monthly intervals at five different depths during 1975 and examined for Paralongidorus maximus: 49% occurred at the 10–19 cm depth. The fluctuation in the numbers of the larval stages suggested that a complete life cycle from egg to adult probably took more than 1 yr. Growth in the second year after planting and overall height of Scots pine seedlings was inversely related to the numbers of P. maximus. In a glasshouse experiment using varying numbers of P. maximus the growth of Scots pine and European larch but not of Sitka spruce were decreased by increasing numbers of nematodes. A possible relationship between P. maximus, Cylindro-carpon destructans and the death of small numbers of Scots pine is discussed.

B. Boag | D. Brown | I. Raschke

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