Population increase of Ditylenchus dipsaci (Kuhn) in the narcissus and the spread of the nematode through the soil

A - Papers appearing in refereed journals

Webster, J. M. 1964. Population increase of Ditylenchus dipsaci (Kuhn) in the narcissus and the spread of the nematode through the soil. Annals of Applied Biology - AAB. 53 (3), pp. 485-492. https://doi.org/10.1111/j.1744-7348.1964.tb07261.x

AuthorsWebster, J. M.
Abstract

SUMMARY A bioassay technique, using forty onion seedlings per pot, was used to determine the soil population of the narcissus race of Ditylenchus dipsaci. In experiments with narcissus, a progressive increase of D. dipsaci populations was shown, reaching a peak at the end of the growing season. This rise in population in May/June was associated with a rise in temperature. Increase in inoculum gave a significantly larger population in the foliage but not in the bulbs. Nematodes moved actively and were transported passively both up and down within the host plant. The presence of spikkels was associated with nematodes in the active intercalary meristem. Migration from the plant into the soil and back into the plant, mostly via the base of the bulb, was continuous throughout the growing season and related to the population increase within the plant. Migration of nematodes from wetted dried leaf tissue continued over 60 days. Spread of the nematode through the soil was slow in the absence of external agencies, such as water run-off and methods of cultivation.

Year of Publication1964
JournalAnnals of Applied Biology - AAB
Journal citation53 (3), pp. 485-492
Digital Object Identifier (DOI)https://doi.org/10.1111/j.1744-7348.1964.tb07261.x
Open accessPublished as non-open access
ISSN00034746
PublisherWiley

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