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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Kacienė, Giedrė;Dikšaitytė, Austra;Januškaitienė, Irena;Miškelytė, Diana;Žaltauskaitė, Jūratė;Sujetovienė, Gintarė;Sakalauskienė, Sandra;Miliauskienė, Jurga;Juozapaitienė, Gintarė;Juknys, Romualdas
Title: Different crop and weed performance under single and combined effects of elevated CO₂ and temperature
Is part of: Crop science. Madison : Crop Science Society of America, 2017, Vol. 57, no. 2
Extent: p. 935-944
Date: 2017
Note: Online ISSN: 1435-0653
Keywords: Climate change;Crop;Weed;Atmospheric CO₂ concentration;Air temperature
Abstract: The factors of global climate change specifically affect crop and weed performance. Peas (Pisum sativum L.), spring barley (Hordeum vulgare L.), and wild mustard (Sinapis arvensis L.) were exposed to elevated atmospheric CO₂ concentration ([CO₂]) (1400 or 700 vs. 400 μmol mol−1) and air temperature (25/18 vs. 21/14°C, day/night) to study the single and combined effects on plant growth, photosynthetic performance, and carbohydrate metabolism. Significantly greater stimulation of the photosynthetic rate was determined at the corresponding growth CO₂ concentration (Agrowth), and water use efficiency (WUE) and biomass production were detected for crops than for weed exposed to elevated [CO₂]. The possibilities to translocate total soluble sugars (TSS) and starch into roots are considerably higher for crop species, especially N2–fixing pea plants compared with wild mustard, while the accumulation of photosynthates in leaves of wild mustard led to higher photosynthetic downregulation and considerably lower stimulation of Agrowth. Moreover, an increase in WUE was completely eliminated at 4°C above ambient air temperature ([25/400]) in wild mustard grown under elevated [CO₂], while crops still maintained slightly higher WUE. These findings suggest that investigated crop species, especially pea plants, have higher advantage than weed under rising [CO₂], and this benefit is detected to be even higher under elevated [CO₂] and temperature
Affiliation(s): Aplinkotyros katedra
Gamtos mokslų fakultetas
Lietuvos agrarinių ir miškų mokslų centras, Sodininkystės ir daržininkystės institutas
Lietuvos agrarinių ir miškų mokslų centro filialas, Sodininkystės ir daržininkystės institutas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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