Physiological response of juvenile hop plants to water deficiták V., Hniličková H., Hnilička F. (2015): Physiological response of juvenile hop plants to water deficit. Plant Soil Environ., 61: 332-338.
download PDF
This paper evaluates the response on the rate of photosynthesis (Pn), transpiration (E), stomatal conductance (gs) and water use efficiency (WUE) in 15 genotypes of young hop plants (19 BBCH) grown in greenhouses in the conditions of water deficit for the period of 9 days. On the 9th day, the relative content of water in the experimental plants fluctuated between 70.14–75.20%. The levels of Pn and gs evidently dropped in the monitored species as a result of the water deficit. The decrease of Pn in the experimental plants compared with the control group was largest in the Saaz Os. cl. 72 (by 77.5%), Magnum (by 73.3%) and Columbus (by 62.3%). To the contrary, the lowest Pn decrease was noted in the case of genotypes Saaz Late (by 15.7%), Vital (by 23.9%) and Premiant (by 24.2%). All genotypes except for cv. H16 showed an evident decrease of E. Judging by the highest values of WUE, the most effective water management was shown by Premiant, Vital and Saaz Late genotypes. A significant stomatal limitation of photosynthesis due to water stress was identified in the most widely used Czech cultivar, Saaz Os. cl. 72, with low values of stomatal conductance, photosynthetic rate and transpiration.
Bohnert Hans J., Jensen Richard G. (1996): Strategies for engineering water-stress tolerance in plants. Trends in Biotechnology, 14, 89-97
CHAVES M. M. (): How Plants Cope with Water Stress in the Field? Photosynthesis and Growth. Annals of Botany, 89, 907-916
Condon A. G. (2004): Breeding for high water-use efficiency. Journal of Experimental Botany, 55, 2447-2460
Galmes J., Ribas-Carbo M., Medrano H., Flexas J. (): Rubisco activity in Mediterranean species is regulated by the chloroplastic CO2 concentration under water stress. Journal of Experimental Botany, 62, 653-665
Hejnák V., Hniličková H., Hnilička F. (2014): Effect of ontogeny, heterophylly and leaf position on the gas exchange of the hop plant. Plant, Soil and Environment, 60: 525–530.
Hniličková H., Novák V. (2000): Accumulation of energy by non-irrigated and irrigated hop plants (Humulus lupulus L.). Rostlinná Výroba, 46: 465–469. (In Czech)
Hsiao T C (1973): Plant Responses to Water Stress. Annual Review of Plant Physiology, 24, 519-570
Hu Ya-Chen, Shao Hong-Bo, Chu Li-Ye, Gang Wu (2006): Relationship between water use efficiency (WUE) and production of different wheat genotypes at soil water deficit. Colloids and Surfaces B: Biointerfaces, 53, 271-277
Kenny S.T. (2005): Photosynthetic measurements in hop (Humulus). ISHS Acta Horticulturae, 668: 241–248.
Korovetska Halyna, Novák Ondřej, Jůza Oldřich, Gloser Vit (2014): Signalling mechanisms involved in the response of two varieties of Humulus lupulus L. to soil drying: I. changes in xylem sap pH and the concentrations of abscisic acid and anions. Plant and Soil, 380, 375-387
Larcher W. (2003): Physiological Plant Ecology (Ecophysiology and Stress Physiology of Functional Groups). Berlin, Heidelberg, Springer-Verlag.
Lawlor D. W., Tezara W. (2008): Causes of decreased photosynthetic rate and metabolic capacity in water-deficient leaf cells: a critical evaluation of mechanisms and integration of processes. Annals of Botany, 103, 561-579
Lugojan C., Ciulca S. (2011): Evaluation of relative water content in winter wheat. Journal of Horticulture, Forestry and Biotechnology, 15: 173–177.
Pérez-Alfocea Francisco, Ghanem Michel Edmond, Gómez-Cadenas Aurelio, Dodd Ian C. (2011): Omics of Root-to-Shoot Signaling Under Salt Stress and Water Deficit. OMICS: A Journal of Integrative Biology, 15, 893-901
Rossbauer G., Buhr L., Hack H., Hauptmann S., Klose R., Meier U., Stauss R., Weber E. (1995): Phänologische Entwicklungsstadien von Kultur-Hopfen (Humulus lupulus L.). Nachrichtenblatt des Deutschen Pflanzenschutzdienstes, 47: 249–253.
Shao Hong-Bo, Chu Li-Ye, Jaleel Cheruth Abdul, Zhao Chang-Xing (2008): Water-deficit stress-induced anatomical changes in higher plants. Comptes Rendus Biologies, 331, 215-225
Slavík L., Kopecký J. (1994): The effect of trickle irrigation on the hop yield. Rostlinná Výroba, 40: 13–18. (In Czech)
Sperry John S (2000): Hydraulic constraints on plant gas exchange. Agricultural and Forest Meteorology, 104, 13-23
download PDF

© 2020 Czech Academy of Agricultural Sciences