Improving salt tolerance of wheat and barley: future prospects

By Timothy D. Colmer, R. Munns, T. Flowers. 2005

326 citations recorded by the source corpus.

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.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/59d3d77d9d93aa8263fc556a97340d84e9f1d7ab

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

Citations in the corpus

Evolution of halophytes: multiple origins of salt tolerance in land plants (2010, background): “In addition other traits such as tolerance to water – logging (see Colmer and Flowers 2008 for a discussion of ﬂ ooding tolerance in halophytes) are vitally important, further complicating any breeding program (Colmer et al .”
Mechanisms of salinity tolerance. (2008, methodology): “Within most species, there is a negative correlation between salinity tolerance and shoot Na+ concentration, as in rice (141) and durum wheat (91) and, with less conviction, in barley (19).”
Identification of QTLs associated with salinity tolerance at late growth stage in barley (2009, background): “Improving the salinity tolerance of barley and increasing its productivity has been an important objective in many barley breeding programs (Colmer et al. 2005).”
Biosaline agriculture for forage and livestock production (2007, background): “Poor biomass production and poor nutritive value when dry McDonald et al. (2001), Colmer et al. (2005) Pennisetum clandestinum Kikuyu grass P 21.5 Grass Branching rhizomes.”
Approaches to increasing the salt tolerance of wheat and other cereals. (2006, background): “The results of these extensive screens have been summarized by Colmer et al. (2005), who comment that they were not followed by D ow nloaded from https://academ ic.oup.com /jxb/article-abstract/57/5/1025/641280 by guest on 15 M arch 2020 yield trials and that new cultivars have not been developed…”
Paddy plants inoculated with PGPR show better growth physiology and nutrient content under saline condition (2013, background): “Colmer et al. (2005) reported that the K:Na ratio is higher in tolerant rice and wheat genotypes.”
Plant Responses to Salt Stress: Adaptive Mechanisms (2017, background): “This effect can favour the retention of toxic ions in roots, limiting the accumulation of these ions in the aerial part of the plant [9,67].”
Osmotic and saline effect on growth, water relations, and ion uptake and translocation in Phlomis purpurea plants (2012, background): “326 In some cases tolerance has been related to higher ion concentrations in the roots 327 compared with the leaves (Boursier and Lauchli, 1990), which would suggest a limited 328 transport to the shoots (Colmer et al., 2005).”
Learning from halophytes: physiological basis and strategies to improve abiotic stress tolerance in crops. (2013, background): “Key words: Salinity, drought, stomata, vacuole, epidermal bladder, trichome, sodium sequestration, cytosolic potassium, xylem loading, osmotic adjustment, membrane potential.”