Evaluation of a Simple Method to Screen Soybean Genotypes for Salt Tolerance

Lee, Jeong‐Dong; Smothers, Scotty; Dunn, David B.; Villagarcia, M. R.; Shumway, C. Richard; Carter, Thomas E.; Shannon, J. Grover

doi:10.2135/cropsci2008.02.0090

Cited by 66 publications

(71 citation statements)

References 20 publications

(22 reference statements)

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“…The maintenance of plant such as pest control, pathogens and weeds was carried out intensively. Data observations included salt toxicity scores using the method of Dong Lee et al (2008) and total plant dry weight.…”

Section: Methodsmentioning

confidence: 99%

GROWTH AND PHYSIOLOGICAL CHARACTERISTICS OF SOYBEAN GENOTYPES (Glycine max L.) TOWARD SALINITY STRESS

Aini¹,

Syekhfani²,

Yamika³

et al. 2014

Agrivita.J.Agr.Sci

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The research aimed to determine the tolerance limit of soybean genotypes toward salinity stress, plant growth and physiological characteristics. It was conducted in green house, from April to August 2013. The study involved two activities. The first activity for evaluating a salinity stress, consisted of four levels of soil salinity (EC): 0.9; 4; 7; 10 dS m -1 and eleven genotypes. The second one to obtain information about changes in physiological and morphological characteristics of soybean affected by salinity stress. The second activity consisted of two soil salinity levels (EC): 1.52 dS m -1 and 8.58 dS m -1. The results showed that at salinity 10 dS m -1 , all varieties/genotypes were not able to survive until the age of 43 days after sowing (DAS). At salinity 4 dS m -1 , total plant dry weight of most genotypes soybean decreased by 48.14%, while the salinity of 7 dS m -1 total plant dry weight of all soybean decreased by 64.89%. Concentration of K and Na in soybean leaves were higher than those in soybean root tissue. The content of K and Na in leaves and roots of most soybean genotypes increased as soil salinity increased from 1.52 to 8.58 dS m -1 , except for genotype G11.

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Section: Methodsmentioning

confidence: 99%

GROWTH AND PHYSIOLOGICAL CHARACTERISTICS OF SOYBEAN GENOTYPES (Glycine max L.) TOWARD SALINITY STRESS

Aini¹,

Syekhfani²,

Yamika³

et al. 2014

Agrivita.J.Agr.Sci

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“…Other QTL analyses performed in wheat for Na + tolerance allowed the identification of Nax1 locus, which maps to the region of the TaHKT1;4 gene that contributes to Na + removal from xylem in the leaf sheath avoiding its over-accumulation in leaf blades (Huang et al, 2006). In soybean, genetic variation for salt tolerance has been described and was observed in wild and cultivated soybean species, suggesting that genetic improvement of salt tolerance is feasible (Lee et al, 2008; Qi et al, 2014). A major QTL for salt tolerance was constantly detected on soybean chromosome 3 (linkage group N) in different populations (Lee et al, 2004; Hamwieh et al, 2011).…”

Section: Strategies To Improve Salt Tolerance In Cropsmentioning

confidence: 99%

New Insights on Plant Salt Tolerance Mechanisms and Their Potential Use for Breeding

et al. 2016

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Soil salinization is a major threat to agriculture in arid and semi-arid regions, where water scarcity and inadequate drainage of irrigated lands severely reduce crop yield. Salt accumulation inhibits plant growth and reduces the ability to uptake water and nutrients, leading to osmotic or water-deficit stress. Salt is also causing injury of the young photosynthetic leaves and acceleration of their senescence, as the Na+ cation is toxic when accumulating in cell cytosol resulting in ionic imbalance and toxicity of transpiring leaves. To cope with salt stress, plants have evolved mainly two types of tolerance mechanisms based on either limiting the entry of salt by the roots, or controlling its concentration and distribution. Understanding the overall control of Na+ accumulation and functional studies of genes involved in transport processes, will provide a new opportunity to improve the salinity tolerance of plants relevant to food security in arid regions. A better understanding of these tolerance mechanisms can be used to breed crops with improved yield performance under salinity stress. Moreover, associations of cultures with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi could serve as an alternative and sustainable strategy to increase crop yields in salt-affected fields.

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“…The salt concentration was adjusted by adding salt gradually to raise the concentration by 20 -30 mM over two weeks to reach the final concentration of 100 and 70 mM NaCl for pre-flowering and reproductive stages, respectively. The final NaCl concentration was determined according to previous studies in which cultivar differences in salinity tolerance were most clearly distinguished at 100 or 120 mM NaCl (Lee et al, 2008;Valencia et al, 2008). However, the final concentration of the salinity treatment for the reproductive stage was adjusted to a lower level than that for the pre-flowering stage, because salt-induced damage during the reproductive stage became apparent at a concentration of 70 mM NaCl.…”

Section: Saline Treatmentmentioning

confidence: 99%

“…Saline conditions hamper germination, growth (Abel and Mackenzie, 1964;Wang and Shannon, 1999), and nodule formation (Singleton and Bohlool, 1984) in soybean, resulting in significant reductions in seed yield (Parker et al, 1983;Yang and Blanchar, 1993). Studies comparing genetically diverse cultivars have found significant differences in salt tolerance (Parker et al, 1983;Yang and Blanchar, 1993;Lee et al, 2008;Tuncturk et al, 2008;Ghassemi-Golezani et al, 2009;Hakeem et al, 2012;Karim et al, 2012;Mannan et al, 2012).…”

mentioning

confidence: 99%