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Titolo:
PAIRWISE COMPETITION AMONG PROGENIES FROM MATINGS WITHIN AND BETWEEN 3 ORIGINS OF PICEA-ABIES IN A NURSERY TRIAL
Autore:
VONEULER F; EKBERG I; ERIKSSON G;
Indirizzi:
SWEDISH UNIV AGR SCI,DEPT FOREST GENET,POB 7027 S-75007 UPPSALA SWEDEN
Titolo Testata:
Silvae Genetica
fascicolo: 1, volume: 43, anno: 1994,
pagine: 30 - 36
SICI:
0037-5349(1994)43:1<30:PCAPFM>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIB FAMILIES;
Keywords:
COMPETITION; PROVENANCE MATINGS; CONTRAST PLOTS; NARROW SPACING; MIXTURE EFFECTS; PROGENY TEST; PICEA-ABIES (L) KARST;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
F. Voneuler et al., "PAIRWISE COMPETITION AMONG PROGENIES FROM MATINGS WITHIN AND BETWEEN 3 ORIGINS OF PICEA-ABIES IN A NURSERY TRIAL", Silvae Genetica, 43(1), 1994, pp. 30-36

Abstract

Picea abies (L. ) KARST. full-sib Progenies from a factorial mating design were classified into 8 types according to the origin of the parents: northern Sweden, central Sweden, or continental Europe. Seedlings were planted in 36-tree plots with 40 cm X 40 cm spacing, either a single mating type, or 2 types mixed (checker-board), on sandy, unfertilized soil. Seven out of the 28 possible pairwise mixtures were included. Height and stem diameter were assessed annually from age 2 (height) or 5 (diameter) through 9 years. The effects of direct mating type andof associate mating type were quantified by a factorial analysis of variance. For height, the direct effect was large at ages 2 to 4, as a result of juvenile free growth in the southern mating types. However, the direct effect declined and was smaller than the associate effect at age 9. An average mixed-plot superiority compared to pure plots was significant from age 3 through 6 for height, from age 6 through 8 for diameter. At most, this superiority was about 5%, both for height and for diameter. Similar competition effects have been reported for otherconifers, with other types of genetic entries, when growing on nutrient-poor soils.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 13:50:58