Results 261 to 270 of about 45,423 (299)

Effect of Culture Conditions on Stomatal Density and Stomatal Index in Four Cactus Species

Haseltonia, 2015
Abstract: We evaluated type of stomata, as well as differences in stomatal frequency in three areas of the plant (apical, middle and basal) under two culture conditions (in vitro and ex vitro), in four cactus species (Opuntia ficus-indica, Hylocereus undatus, Escontria chiotilla and Mammillaria petterssonii).
Virginia Herrera-Martínez, Luis Rios-Hernández, Cristina Garcidueñas-Piña, Aldo Lara-Ibarra, Araceli Adabache-Ortiz, Ruth Elena Soria-Guerra, Eugenio Pérez-Molphe-Balch, José Francisco Morales-Domínguez   +7 more
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Effects of Various Environmental Factors on Stomatal Density, Area, and Potential Conductance Index

Journal of Emerging Investigators, 2021
Stomata, 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, Sonia Balani, Martin Edelberg, Natalie Macke   +3 more
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The stomatal CO2 proxy does not saturate at high atmospheric CO2 concentrations: evidence from stomatal index responses of Araucariaceae conifers

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, Caroline, Elliott-Kingston, Jennifer C, McElwain   +2 more
openaire   +2 more sources

Sulphur dioxide fumigation effects on stomatal density and index of non-resistant plants: Implications for the stomatal palaeo-[CO2] proxy method

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, Caroline Elliott-Kingston, Angela Gallagher, Annmarie Fitzgerald, Jennifer C. McElwain   +4 more
openaire   +1 more source

Stomatal Distribution as an Index for Predicting the Growth Potential of Apple Stocks

Journal of Horticultural Science, 1976
SummaryIn 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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Genome‐wide association study revealed TaHXK3‐2A as a candidate gene controlling stomatal index in wheat seedlings

Plant, Cell & Environment, 2022
AbstractStomata are important channels for the control of gas exchange between plants and the atmosphere. To examine the genetic architecture of wheat stomatal index, we performed a genome‐wide association study (GWAS) using a panel of 539 wheat accessions and 450 678 polymorphic single nucleotide polymorphisms (SNPs) that were detected using wheat ...
Shumin Li, Shizhou Yu, Yifang Zhang, Dehe Zhu, Fangfang Li, Bin Chen, Fangming Mei, Linying Du, Li Ding, Lei Chen, Jiancheng Song, Zhensheng Kang, Hude Mao   +12 more
openaire   +2 more sources

Stomatal index response of Quercus robur and Quercus petraea to the anthropogenic atmospheric CO2 increase

Plant Ecology, 2005
The inverse relationship between numbers of stomata (stomatal frequency) on tree leaves and ambient CO2 concentration is increasingly applied for reconstructing past atmospheric CO2 levels. The abundance of leaf remains of Quercus robur in Holocene peat and lake deposits in Europe makes this species potentially suitable for high-resolution stomatal ...
van Hoof, T.B., Kürschner, W.M., Wagner, F., Visscher, H.   +3 more
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Stomatal Indexes in Three Ploidy Levels of Bromus Inermis Leyss¹

Crop Science, 1977
Stomatal index was investigated as a potential morphological characteristic which may be useful in selecting for improved gas exchange or water relations in smooth bromegrass. The lower stomatal frequency per unit leaf area in the normal 8X plants than in 4X and 6X plants was due to the larger epidermal cell size.
H. Z. Lea, G. M. Dunn, D. W. Koch
openaire   +1 more source

Last interglacial atmospheric CO2 changes from stomatal index data and their relation to climate variations

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, Svante Björck, Dan Hammarlund   +2 more
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Cycads show no stomatal-density and index response to elevated carbon dioxide and subambient oxygen

Australian Journal of Botany, 2011
The 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, Annmarie Fitzgerald, Jennifer C. McElwain   +2 more
openaire   +1 more source