Skip to main content

Notes: Development of Arceuthobium pusillum on Inoculated Black Spruce

The full text article is temporarily unavailable.

We apologise for the inconvenience. Please try again later.

The development of Arceuthobium pusillum was monitored on branches of Picea mariana inoculated in 1971. Of 1120 seeds placed on branches that remained alive, 137 were estimated to have germinated. Eight years later, in 1979, 19 staminate and 32 pistillate plants had developed. Including two questionable infections, and three which have yet to produce shoots, 41 percent of those seeds which germinated colonized host tissue and initiated symptoms. The symptoms observed include bark discoloration, twig swelling, loss of apical dominance, and witches'-broom formation. Dwarf mistletoe shoots first appeared 4 years after inoculation, in 1975, on 9 percent of the infected branches. These shoots produced flowers (and fruits on female aerial shoots) in 1976. In 1977, 15 percent of the infections produced flowers, 35 percent did so in 1978, 22 percent in 1979, and 11 percent will flower in 1980. An additional 6 percent of the inoculated branches have symptoms, but the parasite has not yet produced shoots. In this study, A. pusillum required a minimum of 5 years to complete its life cycle. Forest Sci. 27:203-205.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Picea mariana; dwarf mistletoe; life cycle

Document Type: Miscellaneous

Affiliations: Assistant Professor, Department of Plant pathology, Cornell University, Ithaca, NY 14853

Publication date: 01 March 1981

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more