Results 261 to 270 of about 3,660,330 (295)
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Effects of Various Environmental Factors on Stomatal Density, Area, and Potential Conductance Index
Journal of Emerging Investigators, 2021Stomata, microscopic pores on a leaf flanked with flexible guard cells that open and close the stomatal opening, account for 95% of terrestrial movement of water vapor and carbon essential to the survival of plants. The climate crisis is challenging plants with elevated CO2, drought, varying soil salinity, varying soil acidity, and increasing ...
Lina Kim +3 more
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Stomatal density and stomatal index as indicators of paleoatmospheric CO2 concentration
Review of Palaeobotany and Palynology, 2001A growing number of studies use the plant species-specific inverse relationship between atmospheric CO(2) concentration and stomatal density (SD) or stomatal index (SI) as a proxy for paleo-CO(2) levels. A total of 285 previously published SD and 145 SI responses to variable CO(2) concentrations from a pool of 176 C(3) plant species are analyzed here ...
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Stomatal Distribution as an Index for Predicting the Growth Potential of Apple Stocks
Journal of Horticultural Science, 1976SummaryIn the present study 27 apple rootstocks have been classified into five vigour groups, according to their stomatal distribution, which varied from 11·55 to 5·88 per unit area. Amongst the different stocks studied M. 25 had the maximum stomatal frequency, and M. 9 had the least. An indigenous apple clone M. boccata var.
R. K. Pathak, D. Pandey, V. S. Pandey
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Oecologia, 2011
The inverse relationship between the number of stomata on a leaf surface and the atmospheric carbon dioxide concentration ([CO(2)]) in which the leaf developed allows plants to optimise water-use efficiency (WUE), but it also permits the use of fossil plants as proxies of palaeoatmospheric [CO(2)].
Matthew, Haworth +2 more
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The inverse relationship between the number of stomata on a leaf surface and the atmospheric carbon dioxide concentration ([CO(2)]) in which the leaf developed allows plants to optimise water-use efficiency (WUE), but it also permits the use of fossil plants as proxies of palaeoatmospheric [CO(2)].
Matthew, Haworth +2 more
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Review of Palaeobotany and Palynology, 2012
Abstract The inverse relationship between the number of stomata on the surface of a leaf and the atmospheric concentration of carbon dioxide ([CO2]) in which it developed permits the use of fossil plants as indicators of palaeo-atmospheric [CO2] level (palaeo-[CO2]).
Matthew Haworth +4 more
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Abstract The inverse relationship between the number of stomata on the surface of a leaf and the atmospheric concentration of carbon dioxide ([CO2]) in which it developed permits the use of fossil plants as indicators of palaeo-atmospheric [CO2] level (palaeo-[CO2]).
Matthew Haworth +4 more
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Journal of Oral Pathology & Medicine, 2009
Background: Although number, frequency and healing time of oral ulcers and pain are generally used for clinical practice and studies in Behcet’s disease (BD) and recurrent aphthous stomatitis (RAS), no standardized activity index is currently present to monitor clinical manifestations associated with oral ulcers. The aim of this study was to develop a
G, Mumcu +7 more
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Background: Although number, frequency and healing time of oral ulcers and pain are generally used for clinical practice and studies in Behcet’s disease (BD) and recurrent aphthous stomatitis (RAS), no standardized activity index is currently present to monitor clinical manifestations associated with oral ulcers. The aim of this study was to develop a
G, Mumcu +7 more
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Palaeogeography, Palaeoclimatology, Palaeoecology, 2005
Abstract Changes in atmospheric CO 2 concentrations over the geological past have attracted a considerable amount of scientific interest during the last decade. Many authors have demonstrated, that for some extant plants, stomatal densities and indices are negatively correlated with atmospheric CO 2 concentrations.
Uhl, D., Kerp, H.
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Abstract Changes in atmospheric CO 2 concentrations over the geological past have attracted a considerable amount of scientific interest during the last decade. Many authors have demonstrated, that for some extant plants, stomatal densities and indices are negatively correlated with atmospheric CO 2 concentrations.
Uhl, D., Kerp, H.
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Agro Productividad
Objective: To evaluate the effect of the Phaseolus acutifolius A. Gray rootstock on the establishment of the Phaseolus vulgaris L. scion, analyzing the anatomy of the graft union, stomatal density, stomatal index, and leaf thickness. Design/Methodology/Approach: A completely randomized experimental design was used.
Martha I. Cayetano-Marcial +5 more
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Objective: To evaluate the effect of the Phaseolus acutifolius A. Gray rootstock on the establishment of the Phaseolus vulgaris L. scion, analyzing the anatomy of the graft union, stomatal density, stomatal index, and leaf thickness. Design/Methodology/Approach: A completely randomized experimental design was used.
Martha I. Cayetano-Marcial +5 more
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Cycads show no stomatal-density and index response to elevated carbon dioxide and subambient oxygen
Australian Journal of Botany, 2011The stomatal density (SD) and index (SI) of fossil plants are widely used in reconstructing palaeo-atmospheric CO2 concentration (palaeo-[CO2]). These stomatal reconstructions depend on the inverse relationship between atmospheric CO2 concentration ([CO2]) and SD and/or SI.
Matthew Haworth +2 more
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Global and Planetary Change, 2005
A high-resolution atmospheric CO2 reconstruction based on stomatal index data obtained from Betula and Quercus leaf fragments extracted from the Danish Hollerup lake sediment section provides a unique insight into last interglacial CO2 dynamics. According to pollen stratigraphic correlations the CO2 record covers the first c.
Mats Rundgren +2 more
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A high-resolution atmospheric CO2 reconstruction based on stomatal index data obtained from Betula and Quercus leaf fragments extracted from the Danish Hollerup lake sediment section provides a unique insight into last interglacial CO2 dynamics. According to pollen stratigraphic correlations the CO2 record covers the first c.
Mats Rundgren +2 more
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