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Length and diameter of xylem vessels as factors in resistance of elms to Ceratocystis ulmi

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Netherlands Journal of Plant Pathology Aims and scope Submit manuscript

Abstract

Conductivity of the vascular system of 2-year-old shoots as regards air and water was higher in susceptible than in resistant elms. The xylem vessels of resistant elms were relatively shorter and the percentage of short vessels was greater than in susceptible elms. The percentage of vessels with a large diameter was smaller in resistant elms than in susceptible ones. These results might explain the limited spreading of the spores in the new annual ring of resistant elms.

Samenvatting

Tweejarige scheuten van resistente iepen bleken lucht en water minder snel door te laten dan vergelijkbare scheuten van vatbare iepen. De vaten bij resistente iepen waren relatief kort en het percentage korte vaten was groter dan bij vatbare iepen. Het percentage grote vaten was kleiner bij resistante iepen dan bij vatbare. Dit zou een verklaring kunnen zijn voor de relatief geringe verspreiding van de sporen in de nieuwe jaarring van de resistente iepen.

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References

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Elgersma, D.M. Length and diameter of xylem vessels as factors in resistance of elms to Ceratocystis ulmi. Netherlands Journal of Plant Pathology 76, 179–182 (1970). https://doi.org/10.1007/BF01974328

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  • DOI: https://doi.org/10.1007/BF01974328

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