Allocation of dry matter in Eucalyptus grandis seedlings in response to nitrogen supply

Cromer, R. N.; Jarvis, P.

doi:10.1051/forest:198905art0150

Cited by 8 publications

(8 citation statements)

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“…2a, b; Table 2). This is consistent with findings of Sheriff and Nambiar (1991) for this species, and of Cromer and Jarvis (1989) for effect of N treatment on biomass partitioning by E. grandis seedlings in nutrient solution. The decline with time in proportion of biomass and N partitioned to E. camaldulensis leaves (Fig.…”

Section: Instantaneous Panue [Amt/n (Mmol Coz G-' S-'/mol N G-')i supporting

confidence: 92%

Roles of Carbon Gain and Allocation in Growth at Different Nitrogen Nutrition in Eucalyptus camaldulensis and Eucalyptus globulus Seedlings

Sheriff¹

1992

Functional Plant Biol.

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Potted Eucalyptus camaldulensis and E. globulus seedlings were grown in sand with added mineral nutrients. Mineral nitrogen was added, either (I) only a small initial quantity (N1) or (2) regularly (Nz). Other nutrients were supplied regularly to both treatments. Biomass increment and nutrient concentrations of organs and gas exchange of leaves were measured.Growth, foliage area, and foliar N concentration changed little in Nl seedlings, all increased exponentially in N2 seedlings. Partitioning of dry matter and nitrogen was unaffected by ontogeny or treatment in E. globulus, but changed with time in E. camaldulensis. Within a treatment biomass increase was similar for both species, but foliar biomass and area, total foliar N, and response of carbon assimilation to foliar N were greater in E. globulus. Effects of these on carbon assimilation were partly offset by higher foliar N concentrations in E. camaldulensis. Comparative growth rates of the species were not related to leaf area.Carbon assimilation and diffusive conductance were linearly related with different relationships for the two treatments. Intercellular partial pressures of C 0 2 were constant at c . 300 and 220 pPa Pa-' in N1 and N2 treatments of both species. This indicates a controlling mechanism that maintained intercellular C 0 2 constant, but was affected by treatment.Instantaneous potential assimilatory transpiration efficiency [(rate of carbon assimilation)/(rate of transpiration)] and instantaneous potential assimilatory nitrogen use efficiency [(rate of carbon assimilation)/(N content)] of leaves (at saturating light) were similar in the two species and showed treatment effects apparently not caused by foliar N concentration. These efficiencies were generally high compared to values published for woody plants.A simple model illustrates the importance in predicting growth of accurately knowing: foliage mass, partitioning of biomass to foliage, and rates of carbon assimilation. Effects of small differences in carbon assimilation on biomass increment are shown to be potentially large because they can cause accumulation of large differences in foliar mass.

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Section: Instantaneous Panue [Amt/n (Mmol Coz G-' S-'/mol N G-')i supporting

confidence: 92%

Roles of Carbon Gain and Allocation in Growth at Different Nitrogen Nutrition in Eucalyptus camaldulensis and Eucalyptus globulus Seedlings

Sheriff¹

1992

Functional Plant Biol.

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“…Such optimization of resources by plants in response to environmental conditions has also been reported by Thornley (1972) Hilbert (1990) [33] and Dewar (1993) [20] in different taxa. Decreased allocation to roots has been reported for Eucalyptus seedlings [18,19], tropical perennial grasses [31], temperate annual grasses [67] and old field annuals [25] invariably from nutrient enriched environments. The underlying physiological mechanisms that determine the observed allocation patterns are still largely unknown [71] and many of these mechanisms are hormonally mediated [15] which have been scarcely studied.…”

Section: Discussionmentioning

confidence: 99%

Demographic Plasticity in Relation to Growth and Resource Allocation Pattern in Anthemis Cotula –An Alien Invasive Species in Kashmir Himalaya, India

Allaie¹

2006

Appl Ecol Env Res

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“…A number of papers have been published to demonstrate that seedlings (Cromer and Jarvis, 1990;Kirschbaum et al, 1992) and tree stands (Keith et al, 1997;Albaugh et al, 1998;Misra et al, 1998;Bergh et al, 1999;Hunter, 2001;Stape, 2002;Giardina et al, 2003) can vary their carbon allocation patterns as a result of changes in the availability of growth resources. Most of these experiments included treatments that resulted in very large and prolonged changes in resource availability, e.g.…”

Section: Introductionmentioning

confidence: 97%

Effects of site management on growth, biomass partitioning and light use efficiency in a young stand of Eucalyptus grandis in South Africa

Toit

2008

Forest Ecology and Management

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Allocation of dry matter in Eucalyptus grandis seedlings in response to nitrogen supply

Cited by 8 publications

References 1 publication

Roles of Carbon Gain and Allocation in Growth at Different Nitrogen Nutrition in Eucalyptus camaldulensis and Eucalyptus globulus Seedlings

Roles of Carbon Gain and Allocation in Growth at Different Nitrogen Nutrition in Eucalyptus camaldulensis and Eucalyptus globulus Seedlings

Demographic Plasticity in Relation to Growth and Resource Allocation Pattern in Anthemis Cotula –An Alien Invasive Species in Kashmir Himalaya, India

Effects of site management on growth, biomass partitioning and light use efficiency in a young stand of Eucalyptus grandis in South Africa

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