Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2006
Volume 9
Issue 2
Topic:
Forestry
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Kulej M. 2006. RESISTANCE OF LARCHES OF POLISH PROVENANCES TO LARCH CANKER LACHNELLULA WILLKOMMII (HARTIG.) DENNIS UNDER MOUNTAIN CONDITIONS OF THE SACZ BESKID, EJPAU 9(2), #29.
Available Online: http://www.ejpau.media.pl/volume9/issue2/abs-29.html

RESISTANCE OF LARCHES OF POLISH PROVENANCES TO LARCH CANKER LACHNELLULA WILLKOMMII (HARTIG.) DENNIS UNDER MOUNTAIN CONDITIONS OF THE SACZ BESKID

Marian Kulej
Department of Forest Tree Breeding, Agricultural University of Cracow, Poland

 

ABSTRACT



This study is a fragment of a long-term research on a genetic-silvicultural value of larches of Polish provenances (Table 1, Fig. 1) tested under mountain conditions of the Sącz Beskid range within the All-Polish Provenance Experiment of Larch 1967. Investigations were based on numerical data on the degree of infection of trees of analyzed partial larch populations with a pathogen Lachnellula willkommii (Hartig.) Denis during 1984 – 1999, i.e. when trees were 20, 25, 30, and 35 years old. Results showed a significant diversification of tested provenances in respect of resistance to larch canker, and a certain tendency of its decrease with age of trees (Tables 2 and 3). Provenances of various regions of Poland were in the group of populations most susceptible to this disease, i.e. with trees showing symptoms above the experimental average (Fig. 3). The resistance to larch cancer of individual partial populations, under mountain conditions of the study area situated in experimental forests of Krynica, was in the first place determined by the genotype (Fig. 4). While the evaluation of the effect of the interaction genotype (provenance) x years of observation (age) pointed to a high stability of resistance to canker of larch populations of extreme values of this trait (Fig. 5). This creates, especially in the case of this provenance group, the possibilities to conduct the effective resistance selection in the early stage.

Key words: larch, provenance, selection, variation, resistance, interaction genotype (provenance) x years of observation (years).


Marian Kulej
Department of Forest Tree Breeding,
Agricultural University of Cracow, Poland
Al. 29 Listopada 46, 31-425 Cracow, Poland
phone: +48126625124
email: rkulej@cyf-kr.edu.pl

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