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Author  |
Kondracka, K. |
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Title |
The effect of combined drought and heat stress on growth, photosythetic activity and water relationship of spring wheat (Triticum aestivum L. cv. Łagwa) |
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2016 |
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Ph.D. thesis |
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Institute of Agrophysics of the Polish Academy of Sciences |
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PhD |
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CropM |
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MA @ admin @ |
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5164 |
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Author |
Kondracka, K.; Nosalewicz, A.; Lipiec, J. |
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Title |
Effect of heat stress and water deficit on photosynthesis |
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Conference Article |
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Year |
2014 |
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III. Conference of Young Scientists, Lublin, Poland, 2014-05-25 to 2014-05-26 |
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MA @ admin @ |
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2563 |
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Kondracka, K.; Nosalewicz, A.; Lipiec, J. |
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Title |
Effect of drought and heat stresses on transpiration and photosynthesis of wheat |
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Conference Article |
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Year |
2014 |
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Global warming and frequent extreme weather conditions affect crop yields worldwide. Drought and high temperatures are among stresses that often act simultaneously. Therefore the aim of the studies was to analyze effect of combined drought and heat stresses on growth and function of spring wheat. The experiment was conducted in a growth chamber conditions. Spring wheat cv Łagwa was planted in soil columns of 10cm in diameter and 45cm high filled with Orthic Luvisol developed from loess and grown up to the end of flowering. The treatments were: (C) control with optimum growth soil water potential 160 hPa (pF 2.2), 250 µmol m-2s-1 PAR, 22/18 °C day / night temperatures and 60% air relative humidity throughout growing period; (D) drought stress with soil water potential 250 kPa (pF 3.4) at flowering; (HT) high temperature stress with air temperature 34/24°C and optimum soil water potential ; (DHT) drought (as above) and high temperature (34/24°C day / night) stresses at flowering. During the experiment photosynthesis rate, transpiration and stomatal conductance were measured using the gas exchange system GFS-3000 and DualPAM 100 (Walz, Germany). Drought stress reduced photosynthesis rate by 11%, high temperature by 19% and both stresses by 79% as compared to control (100%). However, drought stress decreased transpiration rate similarly as combined drought and high temperature stresses (by 60-63%). Transpiration rate under high temperature stress compared to control slightly increased. |
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FACCE MACSUR Mid-term Scientific Conference |
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3(S) Sassari, Italy |
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FACCE MACSUR Mid-term Scientific Conference, 2014-04-01 to 2014-04-04, Sassari, Italy |
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MA @ admin @ |
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5074 |
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Author |
Kondracka, K.; Nosalewicz, A.; Lipiec, J. |
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Title |
Abiotic stresses: drought and high temperature |
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Conference Article |
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Year |
2013 |
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CropM |
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12th International Workshop for Young Scientists BioPhys Spring 2013. Lublin, Poland., 2013-05-21 to 2013-05-23 |
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no |
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MA @ admin @ |
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2562 |
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Author |
Lipiec, J.; Doussan, C.; Nosalewicz, A.; Kondracka, K. |
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Title |
Effect of drought and heat stresses on plant growth and yield: a review |
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Journal Article |
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Year |
2013 |
Publication |
International Agrophysics |
Abbreviated Journal |
International Agrophysics |
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27 |
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4 |
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463-477 |
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Keywords |
water stress; high temperature; root and shoot; growth; tolerance mechanisms; management practices; water-use efficiency; soil physical-properties; abscisic-acid; high-temperature; root systems; hydraulic architecture; conservation tillage; photosystem-ii; l. genotypes; drying soil |
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Drought and heat stresses are important threat limitations to plant growth and sustainable agriculture worldwide. Our objective is to provide a review of plant responses and adaptations to drought and elevated temperature including roots, shoots, and final yield and management approaches for alleviating adverse effects of the stresses based mostly on recent literature. The sections of the paper deal with plant responses including root growth, transpiration, photosynthesis, water use efficiency, phenotypic flexibility, accumulation of compounds of low molecular mass (eg proline and gibberellins), and expression of some genes and proteins for increasing the tolerance to the abiotic stresses. Soil and crop management practices to alleviate negative effects of drought and heat stresses are also discussed. Investigations involving determination of plant assimilate partitioning, phenotypic plasticity, and identification of most stress- tolerant plant genotypes are essential for understanding the complexity of the responses and for future plant breeding. The adverse effects of drought and heat stress can be mitigated by soil management practices, crop establishment, and foliar application of growth regulators by maintaining an appropriate level of water in the leaves due to osmotic adjustment and stomatal performance. |
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English |
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0236-8722 |
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Review |
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Notes |
CropM, ft_macsur |
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Call Number |
MA @ admin @ |
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4608 |
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