Gas exchange and Triticum sp. with different ploidy in relation to irradiance
Different species of Triticum were grown during a greenhouse experiment, including T. monococcum L., T. dicoccum Schrank, T. durum Desf., T. spelta L. and T. aestivum cv. Vánek. The goal was to establish the influence of irradiance on the parameters of photosynthetic performance in relation to their...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Czech Academy of Agricultural Sciences
2016-02-01
|
| Series: | Plant, Soil and Environment |
| Subjects: | |
| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-201602-0001_gas-exchange-and-triticum-sp-with-different-ploidy-in-relation-to-irradiance.php |
| _version_ | 1797898125024690176 |
|---|---|
| author | V. Hejnák H. Hniličková F. Hnilička J. Andr |
| author_facet | V. Hejnák H. Hniličková F. Hnilička J. Andr |
| author_sort | V. Hejnák |
| collection | DOAJ |
| description | Different species of Triticum were grown during a greenhouse experiment, including T. monococcum L., T. dicoccum Schrank, T. durum Desf., T. spelta L. and T. aestivum cv. Vánek. The goal was to establish the influence of irradiance on the parameters of photosynthetic performance in relation to their ploidy. Photosynthetic rate (Pn), transpiration (E) and stomatal conductance (gs) were measured at irradiance ranging from 217-1305 µmol/m2/s. In all monitored species, saturation irradiance for photosynthesis at the level of 609 µmol/m2/s was reached. The highest average Pn was measured in the diploid T. monococcum (32.5 µmol CO2/m2/s) while the lowest Pn occurred in the hexaploid T. spelta (22.0 µmol CO2/m2/s). The Pn in hexaploid T. aestivum (29.6 µmol CO2/m2/s) was comparable with the tetraploid T. durum. Similarly, E also decreased with the increase of ploidy. The highest gs was measured in T. durum (1.03 mol CO2/m2/s) and T. aestivum (0.99 mol CO2/m2/s). In all monitored species a close linear dependency was recorded between Pn and gs. Species with lower ploidy reach maximum values of Pn with lower gs. Hexaploid T. aestivum and tetraploid T. durum, require higher gs in order to achieve higher Pn and yet they do not reach the Pn values of species with lower ploidy. |
| first_indexed | 2024-04-10T08:09:24Z |
| format | Article |
| id | doaj.art-303de2c909b24dc497d317a7d02ddd37 |
| institution | Directory Open Access Journal |
| issn | 1214-1178 1805-9368 |
| language | English |
| last_indexed | 2024-04-10T08:09:24Z |
| publishDate | 2016-02-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant, Soil and Environment |
| spelling | doaj.art-303de2c909b24dc497d317a7d02ddd372023-02-23T03:46:23ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682016-02-01622475210.17221/591/2015-PSEpse-201602-0001Gas exchange and Triticum sp. with different ploidy in relation to irradianceV. Hejnák0H. Hniličková1F. Hnilička2J. Andr3Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDepartment of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech RepublicDifferent species of Triticum were grown during a greenhouse experiment, including T. monococcum L., T. dicoccum Schrank, T. durum Desf., T. spelta L. and T. aestivum cv. Vánek. The goal was to establish the influence of irradiance on the parameters of photosynthetic performance in relation to their ploidy. Photosynthetic rate (Pn), transpiration (E) and stomatal conductance (gs) were measured at irradiance ranging from 217-1305 µmol/m2/s. In all monitored species, saturation irradiance for photosynthesis at the level of 609 µmol/m2/s was reached. The highest average Pn was measured in the diploid T. monococcum (32.5 µmol CO2/m2/s) while the lowest Pn occurred in the hexaploid T. spelta (22.0 µmol CO2/m2/s). The Pn in hexaploid T. aestivum (29.6 µmol CO2/m2/s) was comparable with the tetraploid T. durum. Similarly, E also decreased with the increase of ploidy. The highest gs was measured in T. durum (1.03 mol CO2/m2/s) and T. aestivum (0.99 mol CO2/m2/s). In all monitored species a close linear dependency was recorded between Pn and gs. Species with lower ploidy reach maximum values of Pn with lower gs. Hexaploid T. aestivum and tetraploid T. durum, require higher gs in order to achieve higher Pn and yet they do not reach the Pn values of species with lower ploidy.https://pse.agriculturejournals.cz/artkey/pse-201602-0001_gas-exchange-and-triticum-sp-with-different-ploidy-in-relation-to-irradiance.phpwheatphotosynthetically active radiationpolyploidphenotypic plasticitygenotypesphotosynthesis-irradiance curves |
| spellingShingle | V. Hejnák H. Hniličková F. Hnilička J. Andr Gas exchange and Triticum sp. with different ploidy in relation to irradiance Plant, Soil and Environment wheat photosynthetically active radiation polyploid phenotypic plasticity genotypes photosynthesis-irradiance curves |
| title | Gas exchange and Triticum sp. with different ploidy in relation to irradiance |
| title_full | Gas exchange and Triticum sp. with different ploidy in relation to irradiance |
| title_fullStr | Gas exchange and Triticum sp. with different ploidy in relation to irradiance |
| title_full_unstemmed | Gas exchange and Triticum sp. with different ploidy in relation to irradiance |
| title_short | Gas exchange and Triticum sp. with different ploidy in relation to irradiance |
| title_sort | gas exchange and triticum sp with different ploidy in relation to irradiance |
| topic | wheat photosynthetically active radiation polyploid phenotypic plasticity genotypes photosynthesis-irradiance curves |
| url | https://pse.agriculturejournals.cz/artkey/pse-201602-0001_gas-exchange-and-triticum-sp-with-different-ploidy-in-relation-to-irradiance.php |
| work_keys_str_mv | AT vhejnak gasexchangeandtriticumspwithdifferentploidyinrelationtoirradiance AT hhnilickova gasexchangeandtriticumspwithdifferentploidyinrelationtoirradiance AT fhnilicka gasexchangeandtriticumspwithdifferentploidyinrelationtoirradiance AT jandr gasexchangeandtriticumspwithdifferentploidyinrelationtoirradiance |