Full text of this article is only available in PDF format.

Juha Kaitera (email)

Analysis of Cronartium flaccidum lesion development on pole-stage Scots pines

Kaitera J. (2000). Analysis of Cronartium flaccidum lesion development on pole-stage Scots pines. Silva Fennica vol. 34 no. 1 article id 641. https://doi.org/10.14214/sf.641

Abstract

Historical and current lesion development and sporulation of Cronartium flaccidum was investigated in a stand of artificially seeded pole-stage Pinus sylvestris in northern Finland. An average of 6.5 lesions developed per infected tree, most of them occurring on a minority (25%) of the trees. During the monitoring period of five years, fresh aecia appeared mainly in 7–10-year-old shoots, the age of the shoots bearing aecia varying between 3–20 years. Aecia appeared for the first time most frequently in 5–10-year-old shoots. Infection waves occurred, whereas lesions were formed most frequently in shoots formed in various years through the 1980s. After the lesions started to sporulate, sporulation in most lesions that finished sporulating during the monitoring period lasted for 1–2 years. The aecia in between 47% and 59% of the infected shoots developed annually over a longer length in proximal direction than in distal direction next to the previous year’s infection. The aecia-bearing distal part of the shoot was longer in between 19% and 37% of the shoots.

Keywords
Pinus sylvestris; aecia; Cronartium flaccidum; lesion; resin top

Author Info
  • Kaitera, Finnish Forest Research Institute, Rovaniemi Research Station, P.O. Box 16, FIN-96301 Rovaniemi, Finland E-mail juha.kaitera@metla.fi (email)

Received 5 October 1999 Accepted 24 January 2000 Published 31 December 2000

Views 3295

Available at https://doi.org/10.14214/sf.641 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Send to email
Kaunisto S., Sarjala T. (1997) Critical needle potassium concentrations indicat.. Silva Fennica vol. 31 no. 4 article id 5633 (remove) | Edit comment
Liu X., Xu H. et al. (2004) Nutrient distribution in Picea likiangensis tree.. Silva Fennica vol. 38 no. 3 article id 412 (remove) | Edit comment
Øyen B.-H., Nilsen P. (2004) Growth and recruitment after mountain forest sel.. Silva Fennica vol. 38 no. 4 article id 406 (remove) | Edit comment
Kankaanhuhta V., Saksa T. et al. (2009) Variation in the results of Norway spruce planti.. Silva Fennica vol. 43 no. 1 article id 217 (remove) | Edit comment
Raulo J., Saarnio R. et al. (1978) Sealing-off of pruned branch stumps in curly bir.. Silva Fennica vol. 12 no. 4 article id 5010 (remove) | Edit comment
Kuuluvainen T., Mäki J. et al. (2002) Tree age distributions in old-growth forest site.. Silva Fennica vol. 36 no. 1 article id 556 (remove) | Edit comment
Kaitera J., (2000) Analysis of Cronartium flaccidum lesion developm.. Silva Fennica vol. 34 no. 1 article id 641 (remove) | Edit comment
Your search results