Skip Navigation


AOBPreview originally published online on August 7, 2007
Annals of Botany 2007 100(4):767-775; doi:10.1093/aob/mcm162
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
100/4/767    most recent
mcm162v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Hura, T.
Right arrow Articles by Wedzony, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hura, T.
Right arrow Articles by Wedzony, M.
Agricola
Right arrow Articles by Hura, T.
Right arrow Articles by Wedzony, M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?


© The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Physiological and Biochemical Tools Useful in Drought-Tolerance Detection in Genotypes of Winter Triticale: Accumulation of Ferulic Acid Correlates with Drought Tolerance

Tomasz Hura1,*, Stanislaw Grzesiak1, Katarzyna Hura2, Elisabeth Thiemt3, Krzysztof Tokarz1 and Maria Wedzony1,4

1 The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
2 Department of Plant Physiology, Faculty of Agriculture and Economics, Agricultural University, Podluzna 3, 30-239 Kraków, Poland
3 University of Hohenheim, State Plant Breeding Institute, D-70593 Stuttgart, Germany
4 Pedagogical University of Kraków, Podchorazych 2, 30-084 Kraków, Poland

* For correspondence. E-mail t.hura{at}ifr-pan.krakow.pl

Received: 20 March 2007    Returned for revision: 8 May 2007    Accepted: 8 June 2007    Published electronically: 7 August 2007

Background and Aims: The objectives of this study were to investigate whether a classification of triticale genotypes into drought-tolerant and drought-sensitive types based on field performance trials correlates with a classification based on measurements of some physiological and biochemical parameters in greenhouse conditions. In addition, an examination was carried out of whether ferulic acid, as the main origin of the blue fluorescence produced, contributes to drought tolerance.

Methods: Ten winter triticale genotypes were examined, five known to be drought tolerant and five drought sensitive. Measurements of the osmotic potential, leaf gas exchange, chlorophyll fluorescence, and blue and red fluorescence were performed. In addition, analysis of the total pool of phenolic compounds and ferulic acid as well as the measurements of PAL (L-phenylalanine ammonia-lyase) activity were carried out.

Key Results: In agreement with field trials, three out of five cultivars (‘Lamberto’, ‘Timbo’ and ‘Piano’) were classified as drought tolerant. However, in the case of cultivar ‘Babor’, included in the group of drought-sensitive cultivars, the values obtained for some measured parameters were close to (Fv'/Fm', phenolics content, osmotic potential) or even better than (non-photochemical quenching, red and blue fluorescence, ferulic acid content) those for drought-tolerant genotypes. Cultivars ‘Imperial’, ‘Ticino’, ‘Trimaran’ and ‘Boreas’ were included in the drought-sensitive group, whereas cultivars ‘Focus’ and ‘Kitaro’ were included in the moderately sensitive group.

Conclusions: The experiments confirmed that the period of flowering, the critical phase for plants as far as water demand is concerned, is suitable for plant screening and differentiation due to their tolerance to drought. The most important criteria which enabled creation of the ranking list of plants, from those sensitive to drought to those tolerant to drought, were the ability to perform the process of osmoregulation, the efficiency of the utilization of excitation energy by the photosynthetic apparatus and the functioning of protective mechanisms involving the level of ferulic acid in leaf tissues.

Key words: Blue fluorescence, chlorophyll fluorescence, drought, ferulic acid, osmotic potential, phenolics, photosynthesis, red and far-red fluorescence, Triticosecale, winter triticale


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.