Improving salt tolerance of wheat and barley: future prospects

2005 ◽  
Vol 45 (11) ◽  
pp. 1425 ◽  
Author(s):  
T. D. Colmer ◽  
R. Munns ◽  
T. J. Flowers
Keyword(s):  
Salt Tolerance ◽  
Wild Relatives ◽  
Future Prospects ◽  
New Crops ◽  
Sources Of Variation ◽  
Specific Variation ◽  
Wide Hybridisation ◽  
Saline Land

Cropping on saline land is restricted by the low tolerance of crops to salinity and waterlogging. Prospects for improving salt tolerance in wheat and barley include the use of: (i) intra-specific variation, (ii) variation for salt tolerance in the progenitors of these cereals, (iii) wide-hybridisation with halophytic ‘wild’ relatives (an option for wheat, but not barley), and (iv) transgenic techniques. In this review, key traits contributing to salt tolerance, and sources of variation for these within the Triticeae, are identified and recommendations for use of these traits in screening for salt tolerance are summarised. The potential of the approaches to deliver substantial improvements in salt tolerance is discussed, and the importance of adverse interactions between waterlogging and salinity are emphasised. The potential to develop new crops from the diverse halophytic flora is also considered.

scholarly journals A comparative study of salt tolerance parameters in 11 wild relatives of Arabidopsis thaliana

2010 ◽  
Vol 61 (13) ◽  
pp. 3787-3798 ◽  
Author(s):  
Francesco Orsini ◽  
Matilde Paino D'Urzo ◽  
Gunsu Inan ◽  
Sara Serra ◽  
Dong-Ha Oh ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Salt Tolerance ◽  
Comparative Study ◽  
Wild Relatives

scholarly journals Salt tolerance in wild relatives of adzuki bean, Vigna angularis (Willd.) Ohwi et Ohashi

2015 ◽  
Vol 63 (4) ◽  
pp. 627-637 ◽  
Author(s):  
Yutaro Yoshida ◽  
Rusama Marubodee ◽  
Eri Ogiso-Tanaka ◽  
Kohtaro Iseki ◽  
Takehisa Isemura ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Wild Relatives ◽  
Adzuki Bean ◽  
Vigna Angularis

scholarly journals Cultivation of dandelion (Taraxacum erythropodium) on coastal saline land based on the control of salinity and fertilizer

2019 ◽  
Vol 31 (2) ◽  
pp. 277-284
Author(s):  
Zhe Wu ◽  
Zhizhong Xue ◽  
Haishan Li ◽  
Xiaodong Zhang ◽  
Xiuping Wang ◽  
...  
Keyword(s):  
Quality Control ◽  
Salt Tolerance ◽  
Salt Content ◽  
Technical Support ◽  
Physiological Parameters ◽  
Fresh Leaf ◽  
Soil Salt Content ◽  
Soil Salt ◽  
Leaf Yield ◽  
Saline Land

AbstractDandelion (Taraxacum spp.) is a widely distributed weed; in China, however, dandelion has been considered to be a kind of medicinal and edible vegetable in recent years. This transition from weed to vegetable requires corresponding cultivation and management. Thus, the production of dandelion on saline land was conducted based on the evaluation of dandelion salt tolerance. Low soil salt content (< 0.3%) did not significantly affect dandelion growth, and the salt tolerance threshold of dandelion ranged from 0.4% to 0.43% according to the correlation between salt content and morphological and physiological parameters, which was for guiding the preparation of saline land for dandelion field cultivation. Different fertilizer treatments significantly affected the leaf yield of dandelion, and the maximum fresh leaf yield of ~10.5 t ha−1 was obtained when urea was applied in batches at a ratio of 2:2:1 in the sowing, seedling and flowering stages, respectively. This research provided the theoretical and technical support for the cultivation on saline land, laying the foundation for further study of quality control for the cultivation of dandelion on saline land.

scholarly journals Diversity of Salt Tolerance During Germination in Medicago ciliaris (L.) and Medicago polymorpha (L.)

2017 ◽  
Vol 1 (1) ◽  
pp. 6-12
Author(s):  
Chérifi Khalil ◽  
ElHoussein Boufous ◽  
Abdelhamid El Mousadik
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Germination Rate ◽  
Tunisian Population ◽  
Distilled Water ◽  
Medicago Polymorpha ◽  
Medicago Ciliaris ◽  
Specific Variation ◽  
Annual Medicago ◽  
Medicago Species

Variability of salt tolerance in eight wild populations of two annual Medicago species (Medicago ciliaris and Medicago polymorpha) was evaluated at germination stage using tree treatments of salinity: 50, 100 and 150 mM of NaCl. Results showed that germination is clearly affected by high salt stress; their germination rate doesn’t exceed 7% at 150 mM. The greatest variability in tolerance was observed at moderate salt stress (50 mM of NaCl) and the decrease in germination seems to be more accentuated in Medicago polymorpha than Medicago ciliaris. Whereas, the Tunisian population of Medicago ciliaris was the best tolerant in all ecotypes studied in this work. This population prospected on soils affected by salinity, exhibits a particular adaptability to salt environment, at least at this stage in the life cycle. This intra-specific variation in salt tolerance may be used to select genotypes particularly suitable for cultivation on lands relatively affected by salinity. On the other hand, when ungerminated seeds from NaCl treatments were transferred to distilled water, they recovered largely their germination at all the populations studied after only 2 days. This, indicate that the germination inhibition was related to osmotic stress rather than ion toxicity. In addition, seed germination in all populations tended to be extremely rapid than that observed in distilled water which indicate that this pretreatment raises dormancy.

Salt Tolerance in Rice: Present Scenario and Future Prospects

2012 ◽  
pp. 203-211
Author(s):  
Asiya Hameed ◽  
Tabasum N. Qadri ◽  
M. M. Azooz ◽  
Parvaiz Ahmad
Keyword(s):  
Salt Tolerance ◽  
Future Prospects

scholarly journals Dissecting genetic and sex-specific host heterogeneity in pathogen transmission potential

2019 ◽  
Author(s):  
Jonathon A. Siva-Jothy ◽  
Pedro F. Vale
Keyword(s):  
Viral Load ◽  
Disease Transmission ◽  
Genetic Background ◽  
Pathogen Transmission ◽  
Virus Shedding ◽  
Transmission Potential ◽  
Individual Level ◽  
Sources Of Variation ◽  
Specific Variation ◽  
The Individual

AbstractHeterogeneity in disease transmission is widespread and, when not accounted for, can produce unpredictable outbreaks of infectious disease. Despite this, precisely how different sources of variation in host traits drive heterogeneity in disease transmission is poorly understood. Here we dissected the sources of variation in pathogen transmission using Drosophila melanogaster and Drosophila C Virus as a host-pathogen model system. We found that infected lifespan, viral growth, virus shedding, and viral load at death were all significantly influenced by fly genetic background, sex and female mating status. To understand how variation in each of these traits may generate heterogeneity in disease transmission, we estimated individual transmission potential by integrating data on virus shedding and lifespan alongside previously collected data on social aggregation. We found that ∼15% of between-individual heterogeneity in disease transmission was explained by a significant interaction between genetic and sex-specific variation. We also characterised the amount of variation in viral load, virus shedding, and lifespan following infection that could be explained by genetic background and sex. Amongst the determinants of individual variation in disease transmission these sources of host variation play roles of varying importance, with genetic background generally playing the largest role. Our results highlight the importance of characterising sources of variation in multiple host traits when studying disease transmission at the individual-level.

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