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Gewählte Master / Diploma Thesis:

Caroline Engel (2011): Influence of different water availability on phenotypical parameters, yield and yield components of Triticum aestivum.
Master / Diploma Thesis - Abteilung für Pflanzenbau, BOKU-Universität für Bodenkultur, pp 62. UB BOKU obvsg

Data Source: ZID Abstracts
Drought is considered to be the major factor among abiotic stresses that limits crop production especially of wheat in semi-arid and arid regions of many countries. To determine the influence of variable water availability on phenotypical parameters (leaf rolling, leaf senescence, plant height and development stages), physiological parameters (flag leaf chlorophyll content, stomatal conductance, water potential and electrical capacitance of roots), as well as on grain yield and yield components (ear density, thousand grain weight, grains per square meter, number of grains per ear and single ear weight) research in field trials in the arid region of Austria with Pannonian climate in Lower Austria and Burgenland were performed. 25 winter wheat cultivars from Austria, Germany and Hungary were sown in October 2010. To compare drought stressed and well water supplied plants, the same set of winter wheat cultivars was grown in rainfed and irrigated field trials at three study sites. The highest grain yields were detected for the German hybrid varieties Hybred and Hyland, under either rainfed and irrigated conditions. The results of the ANOVA showed that nine of nineteen traits showed a significant interaction of irrigation and variety. The methods stomatal conductance and water potential are not recommendable for the purpose of low cost and time-saving breeding. Further research about dates of development stages, flag leaf chlorophyll contents and root capacitance as well as flag leaf senescence data can help to establish successful selection criteria for drought tolerant wheat cultivars.

Beurteilende(r): Kaul Hans-Peter

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