Drought tolerance of barley varieties in relation to their root system size

Chloupek, O.; Dostál, Vítězslav; Středa, Tomáš; Psota, Vratislav; Dvořáčková, Olga

doi:10.1111/j.1439-0523.2010.01801.x

Cited by 99 publications

(119 citation statements)

References 28 publications

(33 reference statements)

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“…Therefore, breeding for drought resistance has to integrate all methodologies that help in genotype evaluation and selection at all stages of the crop instead of one final stage (Qu et al, 2008). Seedling or early vigour, and deep root system are believed to contribute for better drought resistance (Al-Karaki, 1998;Atkinson et al, 2015;Chloupek et al, 2010;Comas et al, 2013;Lilley and Kirkegaard, 2011). Some genes that contribute to seedling drought resistance may also contribute to later stage resistance (Comas et al, 2013;Hoffmann et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Performance of Ethiopian bread wheat (Tritium aestivum L.) genotypes under contrasting water regimes: potential sources of variability for drought resistance breeding

Ayalew¹,

Dessalegn²,

Liu³

et al. 2016

Aust J Crop Sci

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Drought is a common abiotic stress in Ethiopian agriculture. Crop yield is at risk due to drought that happens at various developmental stages of the crop. This experiment evaluated 248 Ethiopian bread wheat genotypes under water stress and non-stress growing conditions. Augmented complete block design with three blocks and eight replicated entries was used. Analysis of variance showed significant diversity among the genotypes in reaction to water stress. The average root and shoot lengths were reduced by 33.4% and 28.8%, respectively, due to water stress. The average fresh biomass per plant was 192 mg for non-stressed and 116 mg for stressed treatments, suffering a 40.5% reduction due to stress. Accessions 8314, 204463, 204454 and 204521 showed the longest roots while accessions 222381, 222405, 222439 and 204586 showed the shortest roots under stress conditions. Drought tolerance indices were calculated based on root length. Geometric mean performance (GMP) index was found helpful in identifying the relatively stable genotypes across the two water regimes. High GMP indices were observed for genotypes 8314, 204521, 231614, and KSN81 which were long rooting genotypes under both stress and non-stress conditions. ANOVA based on region of collection showed that genotypes from Southern Nations Nationalities and Peoples Region had the longest roots. Elevation of origin did not show any significant difference for any of the traits measured. This study demonstrated the presence of large variations for water stress response in the Ethiopian bread wheat germplasm. The identified stress resistant genotypes can be used as potential breeding stocks to develop drought resistant cultivars.

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Section: Introductionmentioning

confidence: 99%

Performance of Ethiopian bread wheat (Tritium aestivum L.) genotypes under contrasting water regimes: potential sources of variability for drought resistance breeding

Ayalew¹,

Dessalegn²,

Liu³

et al. 2016

Aust J Crop Sci

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“…It can be used as a high-throughput phenotyping tool for screening purposes in plant breeding programs. Linear relationship between RC and root mass has been reported in many different plant species (Ozier-Lafontaine and Bajazet 2005;McBride et al 2008;Tsukahara et al 2009;Pitre et al 2010;Chloupek et al 2010). Selection for high RC increased grain yield under drought (Bänziger et al 2000).…”

Section: Resultsmentioning

confidence: 95%

Physiological Response of German Winter Faba Bean (Vicia fabaL.) to Drought

Ali

2015

Journal of Crop Improvement

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Drought reduces faba bean yield in many parts of the world. Therefore, it is necessary to develop drought-tolerant faba bean cultivars. Plant breeders need to screen for drought-tolerant germplasm using fast and reliable screening tools, e.g., chlorophyll absorbance, thermo-imaging camera system, and electrical root capacitance. A set of faba bean genotypes was used to screen for drought tolerance. Leaf temperature depression (LTD), measured with the thermo-imaging system, was significantly correlated with both dry regrowth weight (r = 0.423), dry matter 1 (r = 0.629), and fresh regrowth weight (r = 0.573). Moreover, root capacitance (RC) was significantly correlated with fresh weight 1 (r = −0.516). Genotypes S062 and S252 were considered drought tolerant. These two lines can be used in breeding programs to develop drought-tolerant cultivars. On the other hand, RC and LTD could be used as non-destructive screening tools for drought tolerance.

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“…The method also offers a good opportunity for relative comparison of root water uptake rates, as well as for discerning plant groups subjected to different environmental conditions affecting root or rhizosphere activity. It is important to emphasize that measurement data are comparable only among plants of the same species, grown in the same substrate at the same moisture level in the same time frame (Chloupek et al, 2010). Due to its versatile adaptability, EC measurement can be reliably applicable in various fields of basic and applied plant physiology, ecopysiological and agricultural researches, substituting at least partially the intrusive and labour intensive techniques Cao et al, 2010;Cseresnyés et al, 2012Cseresnyés et al, , 2013aSvačina et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Simultaneous monitoring of electrical capacitance and water uptake activity of plant root system

Cseresnyés¹,

Takács²,

Füzy³

et al. 2014

International Agrophysics

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A b s t r a c t. Pot experiments were designed to test the applicability of root electrical capacitance measurement for in situ monitoring of root water uptake activity by growing cucumber and bean cultivars in a growth chamber. Half of the plants were inoculated with Funneliformis mosseae arbuscular mycorrhizal fungi, while the other half served as non-infected controls. Root electrical capacitance and daily transpiration were monitored during the whole plant ontogeny. Phenology-dependent changes of daily transpiration (related to root water uptake) and root electrical capacitance proved to be similar as they showed upward trends from seedling emergence to the beginning of flowering stage, and thereafter decreased continuously during fruit setting. A few days after arbuscular mycorrhizal fungi-colonization, daily transpiration and root electrical capacitance of infected plants became significantly higher than those of non-infected counterparts, and the relative increment of the measured parameters was greater for the more highly mycorrhizal-dependent bean cultivar compared to that of cucumber. Arbuscular mycorrhizal fungi colonization caused 29 and 69% relative increment in shoot dry mass for cucumbers and beans, respectively. Mycorrhization resulted in 37% increase in root dry mass for beans, but no significant difference was observed for cucumbers. Results indicate the potential of root electrical capacitance measurements for monitoring the changes and differences of root water uptake rate.K e y w o r d s: mycorrhiza, phenology, root electrical capacitance, transpiration, water uptake INTRODUCTION

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Drought tolerance of barley varieties in relation to their root system size

Cited by 99 publications

References 28 publications

Performance of Ethiopian bread wheat (Tritium aestivum L.) genotypes under contrasting water regimes: potential sources of variability for drought resistance breeding

Performance of Ethiopian bread wheat (Tritium aestivum L.) genotypes under contrasting water regimes: potential sources of variability for drought resistance breeding

Physiological Response of German Winter Faba Bean (Vicia fabaL.) to Drought

Simultaneous monitoring of electrical capacitance and water uptake activity of plant root system

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