Journal Title
Title of Journal: Ann Bot
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Abbravation: Annals of Botany
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Authors: Hand D W Wilson J Warren Acock B
Publish Date: 1993/03/01
Volume: 71, Issue: 3, Pages: 209-216
Abstract
Net photosynthetic rates per unit ground area for plant stands of Solanum melongena L var esculentum aubergine and Amaranthus caudatus L var edulis grain amaranth were measured over 10 min intervals in an airtight glass controlledenvironment cabinet for a range of light flux densities provided by the diurnal variation in daylight Light response curves for photosynthesis of stands grown at ambient CO2 concentration were defined at 400 800 and 1200 vpm CO2Light compensation points for these stands were around 2030 J m2 s1 and decreased slightly at higher CO2 concentrations For aubergine a C3 species the shortterm effects of CO2 enrichment were to increase the initial slope as well as the asymptote of the light response curve reducing light saturation at moderate to high light flux densities but for amaranthus a C4 species saturation was less apparent and CO2 enrichment scarcely increased photosynthesis except at light flux densities above 150 J m2 s1The canopies intercepted 9398 of incident light The efficiency of utilization of intercepted light in photosynthesis µg CO2 J1 increased from zero at the light compensation point to a maximum at an optimum light flux density of about 100 J m2 s1 the optimum rose a little with CO2 enrichment and decreased slightly with further increase in light Maximum utilization efficiencies at 400 vpm CO2 were 89 µg CO2 J1 Enrichment to 1200 vpm did not affect the peak utilization efficiency of the C4 amaranthus but increased that aubergine to 12·2 µg CO2 J1 equivalent to some 14 when using the heat of combustion of plant dry matter to convert to the dimensionless form This is among the highest recorded efficiencies of light utilization for stands and relates to the exceptionally favourable environment with optimal control of CO2 concentration humidity temperature water supply and mineral nutritionCopyright 1993 1999 Academic Press
Keywords:
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- Influence of Microgravity on Ultrastructure and Storage Reserves in Seeds of Brassica rapa L.
- Dry Weight Production and Partitioning in Medicago minima and Erodium cicutarium Under Water Stress
- Structure and Function of an Age Series of Poplar Plantations in Central Himalaya. II Nutrient Dynamics
- Cross-validation of Non-linear Growth Functions for Modelling Tree Height–Diameter Relationships
- The First Record of Fossil Wood of Winteraceae from the Upper Cretaceous of Antarctica
- Jasmonates Induce Intracellular Alkalinization and Closure of Paphiopedilum Guard Cells
- The Interaction of Ultraviolet-B Radiation and Water Deficit in Two Arabidopsis thaliana Genotypes
- Ultrastructural Responses of the Lichen Bryoria fuscescens to Simulated Acid Rain and Heavy Metal Deposition
- Pollen Wall Ontogeny of Felicia muricata (Asteraceae: Astereae)
- Cytoevolution, Phylogeny and Taxonomy in Epacridaceae
- The Structure and Fungal Associates of Mycorrhizas in Leucopogon parviflorus (Andr.) Lindl.
- Developmental Assessment of Sexual Reproduction in Butomus umbellatus (Butomaceae): Female Reproductive Component
- Aspects of Pitcher Morphology and Spectral Characteristics of Six Bornean Nepenthes Pitcher Plant Species: Implications for Prey Capture
- Development of the Root System of Young Peach Trees (Prunus persia L. Batsch): A Morphometrical Analysis
- Responses of Respiration to Increases in Carbon Dioxide Concentration and Temperature in Three Soybean Cultivars
- Plant Growth Analysis: A Note on the Variability of Unit Leaf Rate (Net Assimilation Rate) Within a Sample
- Distribution and Redistribution of Molybdenum in Black Gram (Vigna mungo L. Hepper) in Relation to Molybdenum Supply
- Cuticular Membrane Fine Structure of Nicotiana tabacum L. Leaves
- Robinson DG, Roger JC. 2000. Vacuolar compartments. Annual plant reviews . 314 pp. Sheffield: Sheffield Academic Press and London: CRC Press. £85 (hardback).
- The Af Gene Regulates Timing and Direction of Major Developmental Events during Leaf Morphogenesis in Garden Pea ( Pisum sativum )
- Measuring the RGR of Individual Grass Plants
- Latitudinal Differences in Coconut Foliar Spiral Direction: A Re-evaluation and Hypothesis
- Genetic Variability in Recovery Growth and Synthesis of Stress Proteins in Response to Polyethylene Glycol and Salt Stress in Finger Millet
- Allometry and Competition between Saplings of Picea jezoensis and Abies sachalinensis in a Sub-boreal Coniferous Forest, northern Japan
- Importance of the Fixative for Reliable Ultrastructural Preservation of Poikilohydric Plant Tissues. Observations on Dry, Partially, and Fully Hydrated Tissues of Selaginella lepidophylla
- Nuclear DNA Amounts in Gymnosperms
- Molecular Techniques in the Assessment of Botanical Diversity
- Microsporogenesis, Pollination, Pollen Germination and Male Gametophyte Development in Taxus brevifolia
- Limited Genome Size Variation in Sesleria albicans
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- Seasonal Concentrations of Non-structural Carbohydrates of Five Actinidia Species in Fruit, Leaf and Fine Root Tissue
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- Review of The vegetation of Egypt, by MA Zahran, AJ Willis and Concepts of symbiogenesis. A historical and critical study of the research of Russian botanists, by LN Khakhina
- Relative Resistance of Hollow, Septate Internodes to Twisting and Bending
- The Effect of Drought and Vapour Pressure Deficit on Gas Exchange of Young Kiwifruit ( Actinidia deliciosa var. deliciosa ) Vines
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- Hormone Signals from Roots to Shoots of Sunflower ( Helianthus annuus L.). Moderate Soil Drying Increases Delivery of Abscisic Acid and Depresses Delivery of Cytokinins in Xylem Sap
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