Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-27T08:45:09.290Z Has data issue: false hasContentIssue false

The Changes in Cyst Form during the Development of the Cyst of Heterodera rostochiensis and H. schachtii

Published online by Cambridge University Press:  05 June 2009

Elizabeth M. Wilson
Affiliation:
Zoology Department, University of Newcastle upon Tyne

Extract

The difference in the final shape of the cyst of H. rostochiensis and H. schachtii is shown to be due to patterns of growth during cyst development. The greatest change of form takes place during the first 6 days for H. rostochiensis and the first 12 days for H. schachtii. The principal difference between the cyst shape in the two species is due to the greater increase in length in relation to breadth of the growing H. schachtii cyst. Premature tanning, due to environmental factors, is shown to affect final cyst form.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Franklin, M. T., 1951.—“The Cyst-forming species of Heterodera.” Commonwealth Agric. Bureau. Technical Communication, No. 29.Google Scholar
Gemmell, A. R., 1940.—“Studies in the biology and control of Heterodera schachtii (Schmidt).” West Scot. Agric. Coll. Bull., 139.Google Scholar
Granek, I., 1955.—“Additional morphological differences between the cysts of H. rostochiensis and H. tabacum.” Pl. Dis. Reptr, 39, 716718.Google Scholar
Hesling, J. J., 1965.—“Heterodera: Morphology and Identification.” Plant Nematology Tech. Bull. No. 7 H.M.S.O., 103130.Google Scholar
Jones, F. G. W., 1962.—“A note on Granek's ratio for the separation of H. rostochiensis from H. tabacum.” Nematologica, 7, 256258.CrossRefGoogle Scholar
Linford, M. B., 1940.—“A miniature root observation box.” Phytopathology, 30, 348349.Google Scholar
Thorne, G., 1961.—Principles of Nematology. McGraw Hill, New York.Google Scholar