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Spear Development in Ditylenchus Destructor Thorne 1 )

Spear Development in Ditylenchus Destructor Thorne 1 ) SPEAR DEVELOPMENT IN DITYLENCHUS DESTRUCTOR THORNE 1 ) BY R. V. ANDERSON AND H. M. DARLING Department of Plant Pathology and Physiology, University of Minnesota, St. Paul, Minnesota, and Department of Plant Pathology, University of Wisconsin, Madison, Wisconsin, U.S.A. Development of a micro-observation chamber has made possible direct observation of spear formation in specimens of Ditylenchus destructor at magnifications up to 1025 X. The spear originates from a primordial region distinguishable by its transparency and the presence of three cutinized rings around the old spear shaft early in molt. The spear apex develops progressively from the upper ring and the basal portion forms first within the lower rings and develops posteriorly. The spear apparently is built up from materials produced within the primordium. Studies on the feeding and development of obligate plant parasitic nematodes have been limited for the most part by lack of microtechniques for observing active nematodes under sufficiently high magnifications for extended periods of time. The ability to rear certain plant parasitic nematodes on fungi has provided opportunities for utilization of high magnification and extended periods of ob- servation. Feeding, reproduction, and embryology of D. destructor have been successfully studied in specially designed micro-observation chambers http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Spear Development in Ditylenchus Destructor Thorne 1 )

Anderson, R.V.; Darling, H.M.
Nematologica , Volume 10 (1): 5 – Jan 1, 1964
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529264X00745
Publisher site
See Article on Publisher Site

Abstract

SPEAR DEVELOPMENT IN DITYLENCHUS DESTRUCTOR THORNE 1 ) BY R. V. ANDERSON AND H. M. DARLING Department of Plant Pathology and Physiology, University of Minnesota, St. Paul, Minnesota, and Department of Plant Pathology, University of Wisconsin, Madison, Wisconsin, U.S.A. Development of a micro-observation chamber has made possible direct observation of spear formation in specimens of Ditylenchus destructor at magnifications up to 1025 X. The spear originates from a primordial region distinguishable by its transparency and the presence of three cutinized rings around the old spear shaft early in molt. The spear apex develops progressively from the upper ring and the basal portion forms first within the lower rings and develops posteriorly. The spear apparently is built up from materials produced within the primordium. Studies on the feeding and development of obligate plant parasitic nematodes have been limited for the most part by lack of microtechniques for observing active nematodes under sufficiently high magnifications for extended periods of time. The ability to rear certain plant parasitic nematodes on fungi has provided opportunities for utilization of high magnification and extended periods of ob- servation. Feeding, reproduction, and embryology of D. destructor have been successfully studied in specially designed micro-observation chambers

Journal

Nematologica – Brill

Published: Jan 1, 1964

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