Genetic parameters and genotype-by-environment interactions for pulp-yield predicted using near infrared reflectance analysis and pulp productivity in Eucalyptus globulus

摘要: Near infrared reflectance analysis was used to predict kraft pulp yield of open-pollinated progenies from 70 families collected six populations (subraces) across the natural distribution E, globulus: West Otways, Strzelecki Ranges, Furneauxlslands, King Island, north east Tasmania and south Tasmania. Three sites were sampled all sample trees also assessed for diameter wood basic density. Genetic parameters predicted yield, pulpwood productivity (basic density multiplied by yield) production index (pulpwood tree diameter) estimated together with degree practical importance genotype environment interactions each trait. Predicted under moderate genetic control (h2 ranging 0.33 0.58), strong 0.80 0.84) generally weak (11' 0.17 0.33). correlations between variable (ranging -0.16 -0.43) as (range 0.00 0.74). Genotype interaction not considered a major problem productivity. Although significant subraces found there no differences among at one site range subrace means small. For family significant, very high heritability combined data set similar average individual estimates. Combining diameter, into single (pulp index) is recommended low it subject interaction.