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Titolo:
EARLY EVALUATION OF RACOSPERMA-AURICULIFORME AND RACOSPERMA-MANGIUM PROVENANCE TRIALS ON 4 SITES IN ZAIRE
Autore:
KHASA PD; LI P; VALLEE G; MAGNUSSEN S; BOUSQUET J;
Indirizzi:
UNIV ALBERTA,DEPT RENEWABLE RESOURCES EDMONTON AB T6G 2H1 CANADA UNIV LAVAL,FAC FORESTERIE & GEOMAT,CTR RECH BIOL FORESTIERE ST FOY PQG1K 7P4 CANADA MINIST RESSOURCES NAT QUEBEC,DIRECT RECH FORESTIERE,SERV AMELIORAT ARBRES ST FOY PQ G1P 3W8 CANADA PETAWAWA NATL FORESTRY INST,CANADIAN FORESTRY SERV CHALK RIVER ON K0J1J0 CANADA
Titolo Testata:
Forest ecology and management
fascicolo: 1-3, volume: 78, anno: 1995,
pagine: 99 - 113
SICI:
0378-1127(1995)78:1-3<99:EEORAR>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
TO-AGE CORRELATIONS; ACACIA-AURICULIFORMIS; GENETIC DIVERSITY; LOBLOLLY-PINE; JACK PINE; GROWTH; FAMILIES; NIGERIA; SPRUCE;
Keywords:
ACACIA; GROWTH; PROVENANCE TRIAL; RACOSPERMA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
P.D. Khasa et al., "EARLY EVALUATION OF RACOSPERMA-AURICULIFORME AND RACOSPERMA-MANGIUM PROVENANCE TRIALS ON 4 SITES IN ZAIRE", Forest ecology and management, 78(1-3), 1995, pp. 99-113

Abstract

We examined provenance variation in two Racosperma species (R. auriculiforme and R. mangium) on four test sites in Zaire. Seeds for the twospecies were obtained from Northern Territory and Queensland of Australia, Papua New Guinea, Indonesia, Congo and Zaire. Growth and morphological characters (height, diameter, number of stems, branch angle, stem straightness, volume and flowering), survival and wood specific gravity were measured at ages 3, 9, 15 and 21 months. Site effects were significant and significant provenance differences existed in all traits except branch angle. The rank of provenances changed across sites, indicating significant genotype X environment interactions. Correlations of field growth traits (diameter, height and volume) at different ages were positive but negatively correlated with nursery results. Clinal variation was observed, especially for survival rate. The Racospermaprovenances with the greatest volume production were from Papua New Guinea, They are suited for reforestation programs in Zaire and other tropical countries sharing similar biogeoclimatic conditions. Additional genetic gains in growth and wood density could be obtained through selection and breeding of superior individuals from these provenances.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 13:30:23