Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage
Drought significantly impacts the growth and yield of forage grasses, particularly its effect on Dactylis glomerata photosynthetic apparatus during the initial phase of development remains largely unknown. This study investigated the effects of drought on physiological parameters of various D. glome...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2024-03-01
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| Series: | Journal of Water and Land Development |
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| Online Access: | https://journals.pan.pl/Content/130736/2024-01-JWLD-21.pdf |
| _version_ | 1797238970650722304 |
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| author | Barbara Borawska-Jarmułowicz Grażyna Mastalerczuk Piotr Dąbrowski Żaneta Tuchowska Hazem Kalaji |
| author_facet | Barbara Borawska-Jarmułowicz Grażyna Mastalerczuk Piotr Dąbrowski Żaneta Tuchowska Hazem Kalaji |
| author_sort | Barbara Borawska-Jarmułowicz |
| collection | DOAJ |
| description | Drought significantly impacts the growth and yield of forage grasses, particularly its effect on Dactylis glomerata photosynthetic apparatus during the initial phase of development remains largely unknown. This study investigated the effects of drought on physiological parameters of various D. glomerata varieties. The seedlings obtained after seed germination under optimal and simulated drought conditions by PEG 6000 (three variants) were planted in small pots filled with garden substrate. Over a span of 42 days, the plants were initially kept well-watered (70% capillary water capacity, CWC), after which half of the seedlings from each variant were subjected to drought. This drought stress was applied during the tillering phase for 12 days. Subsequently, the plants were rehydrated (at 70% CWC) and allowed to recover for 14 days. Throughout both drought and recovery periods, measurements were taken. Leaf chlorophyll fluorescence parameters were assessed, and the JIP-test analysis was utilised to provide detailed insights into the functionality of D. glomerata photosynthetic apparatus under drought stress and post-recovery conditions. Several parameters were identified as indicative of the plants’ sensitivity to drought, such as performance indices PI ABS and PI tot, along with quantum yield parameters Ψ E0, φ E0, and φ P0. The results highlighted that var. Minora and Tukan exhibited greater tolerance to water deficit when compared to the other varieties studied. They showed a large increases in PIABS and PItot values after drought stress as well as after the re-watering (recovery period) compared to control plants. This suggests their potential for better adaptation to drought conditions. |
| first_indexed | 2024-04-24T17:44:06Z |
| format | Article |
| id | doaj.art-8e1b066d22254088bed5c8d9ebe16379 |
| institution | Directory Open Access Journal |
| issn | 2083-4535 |
| language | English |
| last_indexed | 2024-04-24T17:44:06Z |
| publishDate | 2024-03-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Journal of Water and Land Development |
| spelling | doaj.art-8e1b066d22254088bed5c8d9ebe163792024-03-27T15:12:36ZengPolish Academy of SciencesJournal of Water and Land Development2083-45352024-03-01No 60194208https://doi.org/10.24425/jwld.2024.149121Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stageBarbara Borawska-Jarmułowicz0https://orcid.org/0000-0001-7092-6544Grażyna Mastalerczuk1https://orcid.org/0000-0002-8267-5460Piotr Dąbrowski2https://orcid.org/0000-0002-2867-8839Żaneta Tuchowska3https://orcid.org/0000-0003-1169-8179Hazem Kalaji4https://orcid.org/0000-0002-3833-4917Warsaw University of Life Sciences – SGGW, Institute of Agriculture, Nowoursynowska St, 159, 02-776 Warsaw, PolandWarsaw University of Life Sciences – SGGW, Institute of Agriculture, Nowoursynowska St, 159, 02-776 Warsaw, PolandWarsaw University of Life Sciences – SGGW, Institute of Environmental Engineering, Nowoursynowska St, 159, 02-776 Warsaw, PolandWarsaw University of Life Sciences – SGGW, Institute of Agriculture, Nowoursynowska St, 159, 02-776 Warsaw, PolandInstitute of Technology and Life Sciences – National Research Institute, Falenty, Hrabska Ave, 3, 05-090 Raszyn, PolandDrought significantly impacts the growth and yield of forage grasses, particularly its effect on Dactylis glomerata photosynthetic apparatus during the initial phase of development remains largely unknown. This study investigated the effects of drought on physiological parameters of various D. glomerata varieties. The seedlings obtained after seed germination under optimal and simulated drought conditions by PEG 6000 (three variants) were planted in small pots filled with garden substrate. Over a span of 42 days, the plants were initially kept well-watered (70% capillary water capacity, CWC), after which half of the seedlings from each variant were subjected to drought. This drought stress was applied during the tillering phase for 12 days. Subsequently, the plants were rehydrated (at 70% CWC) and allowed to recover for 14 days. Throughout both drought and recovery periods, measurements were taken. Leaf chlorophyll fluorescence parameters were assessed, and the JIP-test analysis was utilised to provide detailed insights into the functionality of D. glomerata photosynthetic apparatus under drought stress and post-recovery conditions. Several parameters were identified as indicative of the plants’ sensitivity to drought, such as performance indices PI ABS and PI tot, along with quantum yield parameters Ψ E0, φ E0, and φ P0. The results highlighted that var. Minora and Tukan exhibited greater tolerance to water deficit when compared to the other varieties studied. They showed a large increases in PIABS and PItot values after drought stress as well as after the re-watering (recovery period) compared to control plants. This suggests their potential for better adaptation to drought conditions.https://journals.pan.pl/Content/130736/2024-01-JWLD-21.pdfchlorophyll a fluorescence transientdactylis glomeratajip-testtillering phasewater deficit |
| spellingShingle | Barbara Borawska-Jarmułowicz Grażyna Mastalerczuk Piotr Dąbrowski Żaneta Tuchowska Hazem Kalaji Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage Journal of Water and Land Development chlorophyll a fluorescence transient dactylis glomerata jip-test tillering phase water deficit |
| title | Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage |
| title_full | Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage |
| title_fullStr | Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage |
| title_full_unstemmed | Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage |
| title_short | Influence of induced drought on photosynthetic performance in Dactylis glomerata varieties during the early growth stage |
| title_sort | influence of induced drought on photosynthetic performance in dactylis glomerata varieties during the early growth stage |
| topic | chlorophyll a fluorescence transient dactylis glomerata jip-test tillering phase water deficit |
| url | https://journals.pan.pl/Content/130736/2024-01-JWLD-21.pdf |
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