Abstract
Salinization is a global agricultural problem with many negative effects on crops, including delaying germination, inhibiting growth, and reducing crop yield and quality. This study compared the salt tolerance of 20 soybean varieties at the germination stage to identify soybean germplasm with a high salt tolerance. Germination tests were conducted in Petri dishes containing 0, 50, 100, 150, and 200 mmol L−1 NaCl. Each Petri dish contained 20 soybean seeds, and each treatment was repeated five times. The indicators of germination potential, germination rate, hypocotyl length, and radicle length were measured. The salt tolerance of 20 soybean varieties was graded, and the theoretical identification concentration was determined by cluster analysis, the membership function method, one-way analysis of variance, and quadratic equation analysis. The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L−1, compared with that of the Ctrl. The half-lethal salt concentration of soybean was 164.50 mmol L−1, and the coefficient of variation was 18.90%. Twenty soybean varieties were divided into three salt tolerance levels following cluster analysis: Dongnong 254, Heike 123, Heike 58, Heihe 49, and Heike 68 were salt-tolerant varieties, and Xihai 2, Suinong 94, Kenfeng 16, and Heinong 84 were salt-sensitive varieties, respectively. This study identified suitable soybean varieties for planting in areas severely affected by salt and provided materials for screening and extracting parents or genes to breed salt-tolerant varieties in areas where direct planting is impossible. It assists crop breeding at the molecular level to cope with increasingly serious salt stress.
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Claims 8
Claim · model-written summary
Relative germination rate decreased above 50 mmol L−1 NaCl versus control.
- Taxon
- soybean
Glycine maxe0 - Treatment
- salt concentration was >50 mmol L−1e0
- Outcome
- relative germination ratee0
- Direction
- decreasede0
- Comparator
- Ctrle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L−1, compared with that of the Ctrl.”
Claim · model-written summary
Relative germination potential decreased above 50 mmol L−1 NaCl versus control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salt concentration was >50 mmol L−1e0
- Outcome
- relative germination potentiale0
- Direction
- decreasede0
- Comparator
- Ctrle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L−1, compared with that of the Ctrl.”
Claim · model-written summary
Relative root length decreased above 50 mmol L−1 NaCl versus control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salt concentration was >50 mmol L−1e0
- Outcome
- relative root lengthe0
- Direction
- decreasede0
- Comparator
- Ctrle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L−1, compared with that of the Ctrl.”
Claim · model-written summary
Relative bud length decreased above 50 mmol L−1 NaCl versus control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salt concentration was >50 mmol L−1e0
- Outcome
- relative bud lengthe0
- Direction
- decreasede0
- Comparator
- Ctrle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L−1, compared with that of the Ctrl.”
Claim · model-written summary
Half-lethal soybean salt concentration was 164.50 mmol L−1.
- Taxon
- soybeanGlycine maxe0
- Outcome
- half-lethal salt concentratione0
- Value
- 164.50 mmol L−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The half-lethal salt concentration of soybean was 164.50 mmol L−1, and the coefficient of variation was 18.90%.”
Claim · model-written summary
The coefficient of variation for half-lethal salt concentration was 18.90%.
- Taxon
- soybeanGlycine maxe0
- Outcome
- coefficient of variatione0
- Value
- 18.90%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The half-lethal salt concentration of soybean was 164.50 mmol L−1, and the coefficient of variation was 18.90%.”
Claim · model-written summary
Dongnong 254, Heike 123, Heike 58, Heihe 49, and Heike 68 were classified as salt tolerant.
- Taxon
- soybeanGlycine maxt0
- Material
- Dongnong 254, Heike 123, Heike 58, Heihe 49, and Heike 68e0
- Outcome
- salt-tolerant varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dongnong 254, Heike 123, Heike 58, Heihe 49, and Heike 68 were salt-tolerant varieties”
t0“Spring Soybean”
Claim · model-written summary
Xihai 2, Suinong 94, Kenfeng 16, and Heinong 84 were classified as salt sensitive.
- Taxon
- SoybeanGlycine maxt0
- Material
- Xihai 2, Suinong 94, Kenfeng 16, and Heinong 84e0
- Outcome
- salt-sensitive varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xihai 2, Suinong 94, Kenfeng 16, and Heinong 84 were salt-sensitive varieties”
t0“Soybean”
The same questions in other papers
salinity · growth · Glycine max (soybean)Positive and negative results
109 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
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See all 116 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.