Abstract
Saline soil is a prospective land for expanding the soybean planting area in Indonesia, but no variety with the ability to adapt to this soil has currently been released. That objective of this esearch was to identify the salt-tolerant soybean germplasm accessions. The experiment consisted of two treatments and these were arranged in a randomized complete block design with three replications. The first factor was three soil salinity levels i.e. 1.44-1.72 dS/m (used as a check), 6.75±0.40 dS/m, and 10.48±0.30 dS/m. The second factor was 25 soybean accessions selected from previous salinity screening activity. Parameters observed were soil electrical conductivity (EC), plant height, yield and yield attributes, as well as K, Ca, and Na concentration in soil and plant. The results showed that salinity treatment increased the soil EC, Na concentrations in shoot and root, and reduced K, thereby causing a reduction in soybean growth, seed weight, and seed size. Meanwhile, MLGG 0169, MLGG 0640, MLGG 0767 (Lokon variety), MLGG 1109 (Dega 1 variety), and MLGG 1098 (Detam 2 variety) were identified as tolerant tosalinity level up to 10.48±0.30 dS/m. The tolerant genotypes were characterized by high ITC index, high seed yield, fewer reduction of seed yield, and mild leaf damage. The tolerances were likely determined by the ability to absorb more K and less Na, translocate more K from root to shoot, and higher K/Na ratio in shoot and root than Ca/Na ratio. It means the K/Na ratio is more important in determining salinity tolerance than Ca/Na ratio. Therefore, accessions can be used as gene source for salt-tolerant breeding, and Lokon, Dega 1, and Detam 2 varieties were recommended for saline soil.
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Claims 14
Claim · model-written summary
Salinity treatment increased soil EC relative to the 1.44-1.72 dS/m check.
- Taxon
- soybean
Glycine maxe0 - Treatment
- salinity treatmente2
- Outcome
- soil ECe2
- Direction
- increasede2
- Comparator
- 1.44-1.72 dS/me1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e1“1.44-1.72 dS/m (used as a check)”
e2“The results showed that salinity treatment increased the soil EC, Na concentrations in shoot and root, and reduced K, thereby causing a reduction in soybean growth, seed weight, and seed size”
Claim · model-written summary
Salinity treatment increased Na concentrations in shoot and root of soybean relative to the check.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salinity treatmente2
- Outcome
- Na concentrations in shoot and roote2
- Direction
- increasede2
- Comparator
- 1.44-1.72 dS/me1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e1“1.44-1.72 dS/m (used as a check)”
e2“The results showed that salinity treatment increased the soil EC, Na concentrations in shoot and root, and reduced K, thereby causing a reduction in soybean growth, seed weight, and seed size”
Claim · model-written summary
Salinity treatment reduced K in soybean relative to the check.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salinity treatmente2
- Outcome
- Ke2
- Direction
- reducede2
- Comparator
- 1.44-1.72 dS/me1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e1“1.44-1.72 dS/m (used as a check)”
e2“The results showed that salinity treatment increased the soil EC, Na concentrations in shoot and root, and reduced K, thereby causing a reduction in soybean growth, seed weight, and seed size”
Claim · model-written summary
Salinity treatment reduced soybean growth, seed weight and seed size relative to the check.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salinity treatmente2
- Outcome
- soybean growth, seed weight, and seed sizee2
- Direction
- reductione2
- Comparator
- 1.44-1.72 dS/me1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e1“1.44-1.72 dS/m (used as a check)”
e2“The results showed that salinity treatment increased the soil EC, Na concentrations in shoot and root, and reduced K, thereby causing a reduction in soybean growth, seed weight, and seed size”
Claim · model-written summary
MLGG 0169, MLGG 0640 and MLGG 0767 (Lokon variety) were identified as tolerant to salinity up to 10.48±0.30 dS/m.
- Taxon
- soybeanGlycine maxe0
- Material
- MLGG 0169, MLGG 0640, MLGG 0767 (Lokon variety)e3
- Treatment
- salinity level up to 10.48±0.30 dS/me3
- Outcome
- tolerante3
- Direction
- identified as tolerante3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e3“Meanwhile, MLGG 0169, MLGG 0640, MLGG 0767 (Lokon variety), MLGG 1109 (Dega 1 variety), and MLGG 1098 (Detam 2 variety) were identified as tolerant tosalinity level up to 10.48±0.30 dS/m”
Claim · model-written summary
MLGG 1109 (Dega 1 variety) and MLGG 1098 (Detam 2 variety) were identified as tolerant to salinity up to 10.48±0.30 dS/m.
- Taxon
- soybeanGlycine maxe0
- Material
- MLGG 1109 (Dega 1 variety), and MLGG 1098 (Detam 2 variety)e3
- Treatment
- salinity level up to 10.48±0.30 dS/me3
- Outcome
- tolerante3
- Direction
- identified as tolerante3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e3“Meanwhile, MLGG 0169, MLGG 0640, MLGG 0767 (Lokon variety), MLGG 1109 (Dega 1 variety), and MLGG 1098 (Detam 2 variety) were identified as tolerant tosalinity level up to 10.48±0.30 dS/m”
Claim · model-written summary
Tolerant genotypes had a high ITC index.
- Taxon
- soybeanGlycine maxe0
- Material
- tolerant genotypese4
- Outcome
- ITC indexe4
- Direction
- highe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e4“The tolerant genotypes were characterized by high ITC index, high seed yield, fewer reduction of seed yield, and mild leaf damage”
Claim · model-written summary
Tolerant genotypes had high seed yield.
- Taxon
- soybeanGlycine maxe0
- Material
- tolerant genotypese4
- Outcome
- seed yielde4
- Direction
- highe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e4“The tolerant genotypes were characterized by high ITC index, high seed yield, fewer reduction of seed yield, and mild leaf damage”
Claim · model-written summary
Tolerant genotypes showed fewer reductions of seed yield under salinity.
- Taxon
- soybeanGlycine maxe0
- Material
- tolerant genotypese4
- Outcome
- reduction of seed yielde4
- Direction
- fewere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e4“The tolerant genotypes were characterized by high ITC index, high seed yield, fewer reduction of seed yield, and mild leaf damage”
Claim · model-written summary
Tolerant genotypes showed mild leaf damage under salinity.
- Taxon
- soybeanGlycine maxe0
- Material
- tolerant genotypese4
- Outcome
- leaf damagee4
- Direction
- milde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e4“The tolerant genotypes were characterized by high ITC index, high seed yield, fewer reduction of seed yield, and mild leaf damage”
Claim · model-written summary
Salinity tolerance was likely determined by the K/Na ratio in shoot and root.
- Taxon
- soybeanGlycine maxe0
- Compound
- K/Na ratioe5
- Outcome
- tolerancese5
- Qualifier
- likely determined bye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e5“The tolerances were likely determined by the ability to absorb more K and less Na, translocate more K from root to shoot, and higher K/Na ratio in shoot and root than Ca/Na ratio”
Claim · model-written summary
The K/Na ratio is more important than the Ca/Na ratio in determining salinity tolerance.
- Taxon
- soybeanGlycine maxe0
- Compound
- K/Na ratioe6
- Outcome
- salinity tolerancee6
- Direction
- more importante6
- Comparator
- Ca/Na ratioe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e6“It means the K/Na ratio is more important in determining salinity tolerance than Ca/Na ratio”
Claim · model-written summary
Soybean accessions can be used as gene sources for salt-tolerant breeding.
- Taxon
- soybeanGlycine maxe0
- Outcome
- gene source for salt-tolerant breedinge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e7“Therefore, accessions can be used as gene source for salt-tolerant breeding, and Lokon, Dega 1, and Detam 2 varieties were recommended for saline soil”
Claim · model-written summary
Lokon, Dega 1 and Detam 2 varieties are recommended for saline soil.
- Taxon
- soybeanGlycine maxe0
- Material
- Lokon, Dega 1, and Detam 2 varietiese7
- Outcome
- recommended for saline soile7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding the soybean planting area”
e7“Therefore, accessions can be used as gene source for salt-tolerant breeding, and Lokon, Dega 1, and Detam 2 varieties were recommended for saline soil”
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