Salt Tolerance of Green Soybeans as Affected by Various Salinities in Sand Culture

Nukaya, Akira; Masui, Masao; Ishida, Akira

doi:10.2503/jjshs.50.487

Cited by 17 publications

(6 citation statements)

References 12 publications

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“…This result in muskmelons did not agree with data from green soybeans, where CI depressed the growth more than SO4 and Mg did not show an adverse effect (12). This may be due to genetic difference, as observed by other investigators (2,3,13).…”

Section: Discussioncontrasting

confidence: 54%

Salt Tolerance of Muskmelons as Affected by Various Salinities in Sand Culture

Nukaya

Masui

Ishida

1983

Engei Gakkai zasshi

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SummaryMuskmelons (Cucumis melo L.) were grown in sand to determine the salt tolerance as affected by salinization of sea water, NaCI, Na2SO4 and MgCl2 in Experiment I, and MgSO4 in Experiment II at osmotic potentials of -0.95 (MgSO4 only), -1.20, -1.70 and -2 .70 bars as compared to a control of -0.70 bars of base nutrient solution. Fruit fresh weight and whole plant dry weight were greatest in the control and decreased in each salinity with decreasing osmotic potentials of treatment solutions. At -2.70 bars fruit fresh weight in the control was 37. 3, 31. 4, 11. 8, 24.8 and 17.0% in the sea water, NaCI, Na2SO4, MgC12 and MgSO4 series, respectively. No plant died in the sea water and NaCI series. A few plants at -2.70 bars in the MgCl2 series withered by harvest. All plants died within 60 days after transplanting at -2.70 bars in the Na2SO4 series and at -1.70 and -2.70 bars in the MgSO4 series. The growth in decreasing order was control>sea water=NaCl>MgCl2> Na2SO4=MgSO4. The addition of single salts or sea water to the base nutrient solution increased the content of the respective added ions in leaves and soil solutions (SSa) and EC of SSa, and decreased osmotic potentials of SSa. Ca in leaves decreased in the Na2SO4, MgC12 and MgSO4 series with decreasing osmotic potentials of treatment solutions. The result seemed to suggest specific effects of Mg and SO4 ions on muskmelons.

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Section: Discussioncontrasting

confidence: 54%

Salt Tolerance of Muskmelons as Affected by Various Salinities in Sand Culture

Nukaya

Masui

Ishida

1983

Engei Gakkai zasshi

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“…Clark 63 was the most sensitive cultivar to increased Cl − at the 8.5 dS m −1 salinity level, and Lee was the least sensitive cultivar. Nukaya et al. (1982) reported that Cl − salt had the greatest detrimental effect on growth and yield in green soybean, when isoosmotic concentrations of different salts were used.…”

Section: Discussionmentioning

confidence: 99%

Effect of Salinity Stress on Growth and Nutrient Composition of Three Soybean (Glycine max L. Merrill) Cultivars

Essa

2002

J Agronomy Crop Science

244

117

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Soil salinity is a major limitation to legume production in many areas of the world. The salinity sensitivity of soybean was studied to determine the effect of salinity on seed germination, shoot and root dry weights, and leaf mineral contents. Three soybean cultivars, Lee, Coquitt, and Clark 63, were planted in soils of different salinity levels. The electrical conductivity (EC) of the soils used in this experiment was 0.5 dS m )1 . The soil salinity treatments were 0.5, 2.5 4.5, 6.5 and 8.5 dS m )1 . Saline drainage water from a drainage canal with an EC of 15 dS m )1 was used to treat the soil samples in order to obtain the desired salinity levels. Germination percentages were recorded 10 days after planting. Shoot and root dry weights of 45-day-old plants were measured. Nutrient concentrations for Na + , K + , Ca 2+ , Mg 2+ and Cl ) were determined. Germination percentages were significantly reduced with increasing salinity levels. The cultivar Lee was less affected by salinity stress than Coquitt and Clark 63. At 8.5 dS m )1 a significant reduction in plant height was found in all three cultivars. However, Lee plants were taller than plants of the other two cultivars. Salinity stress induced a significant increase in leaf sodium (Na + ) and chloride (Cl ) ) in all cultivars. However, the cultivar Lee maintained lower Na + and Cl + concentrations, a higher potassium (K + ) concentration and a higher K + /Na + ratio at higher salinity levels than Coquitt and Clark 63. Saline stress reduced the accumulation of K + , calcium (Ca 2+ ) and magnesium (Mg 2+ ) in the leaves of the cultivars studied. This study suggests that Lee is the most tolerant cultivar, and that there is a relationship between the salt tolerance of the cultivar and macronutrient accumulation in the leaves.

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“…Plants were supplied with 50 ml of sterilized water until they were thinned to one plant per pot 10th days after sowing. Then, they were supplied with 150ml of nutrient solution (Nukaya 1982) every 4 days and with 150ml sterilized water every other day, in a growth chamber (30*C daytime/20~ night) from August to October.…”

Section: Methodsmentioning

confidence: 99%