Claim · model-written summary
Genotype information further improved model fit.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“Addition of genotype information in the competition index further improved the fit of the model.”
t0“radiata pine”
Title
Sharma, Rajesh Kumar University of Canterbury Research Repository (University of Canterbury) 2008. doi:10.26021/2473
Other claims from this paper (19)
- Observation Clones significantly differed in initial morphology, survival and stem slenderness.
- Association Sturdiness and initial height best predicted initial survival.
- Intervention effect Deployment did not affect overall productivity but significantly affected individual clone productivity.
- Observation Clone productivity contributions were similar in monoclonal plots but disproportionate in mixtures, where a minority supplied most productivity.
- Method / resource Competition index explained significant diameter-growth variability.
- Method / resource Inverse-squared distance gave a slightly better model fit than inverse distance.
- Observation Competition stayed uniform in monoclonal plots but increased for some mixture clones, increasing size variability.
- Recommendation Early and single-tree selections may miss genotypes that grow rapidly monoclonally; block selections may enhance monoclonal productivity.
- Observation Clones differed in modeled yield patterns and asymptotes and formed two distinct yield-model groups.
- Method / resource Models based on the first few years were biased indicators of future relative performance.
- Method / resource The 3-PG model could be calibrated to simulate clone productivity and potentially inform site-specific selection.
- Observation Clones significantly differed in foliage and stem biomass at age five.
- Mechanism Productivity differences mainly reflected biomass partitioning and specific leaf area differences.
- Observation At 1250 stems/ha clones significantly differed in stiffness, slenderness and branch traits.
- Association Deployment affected stem slenderness; slenderness correlated with and significantly influenced stiffness, but clone stiffness differences were not significant.
- Intervention effect Increasing stocking from 833 to 2500 stems/ha decreased branch diameter 56%.
- Intervention effect Increasing stocking from 833 to 2500 stems/ha increased branch angle 17%.
- Intervention effect Monoclonal trees had greater uniformity in size, slenderness and competition.
- Observation One clone's woolly aphid susceptibility suggested increased risk from large monoclonal deployment.