Abstract
ABSTRACT Drought stress is the primary abiotic threat to soybean production. Drought tolerance mechanisms in Mexican soybeans have not yet been fully studied. We examined the responses of three Mexican soybean genotypes, with varying maturities, to progressive drought stress and recovery irrigation, regarding plant water status, biomass traits, root system architecture, and their relationships. Genotypes I1240, I700 (intermediate maturity), and E2309 (early maturity) were examined since they showed drought tolerance characteristics under field conditions in previous studies. Drought stress was applied at the R2 growth stage for 17 days, after that irrigation was restored. Control plants were irrigated normally throughout the study. Responses to severe drought stress were different depending on the genotype. Early genotype E2309 exhibited a wider root system and tolerated drought stress maintaining shoot biomass and root characteristics at a low plant water potential. Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential. Due to drought, genotype I1240 showed a more prominent increase in root diameter; meanwhile, root biomass was not decreased in genotype I700. Genotype I700 displayed a longer root system with the highest root‐to‐shoot ratio and recovered root growth more efficiently after recovery irrigation. General effects also indicated a longer root system in this genotype. Therefore, it could be used as a genetic source to improve root traits to cope with drought. Morphological and biomass root traits are suitable for selecting drought stress–tolerant soybean genotypes.
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Claims 9
Claim · model-written summary
E2309 maintained shoot biomass and root traits under drought at low water potential.
- Taxon
- soybean
Glycine maxt0 - Material
- E2309e0
- Outcome
- maintaining shoot biomass and root characteristicse0
- Qualifier
- low plant water potentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early genotype E2309 exhibited a wider root system and tolerated drought stress maintaining shoot biomass and root characteristics at a low plant water potential”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
E2309 exhibited a wider root system.
- Taxon
- soybeanGlycine maxt0
- Material
- E2309e0
- Outcome
- wider root systeme0
- Direction
- widere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early genotype E2309 exhibited a wider root system”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
I1240 and I700 avoided drought with greater roots at higher water potential.
- Taxon
- soybeanGlycine maxt0
- Material
- I1240 and I700e0
- Outcome
- greater root system at a higher plant water potentiale0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
Drought increased I1240 root diameter.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Due to drought, genotype I1240 showed a more prominent increase in root diameter”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
I700 root biomass was not decreased under drought.
- Taxon
- soybeanGlycine maxt0
- Material
- I700e0
- Treatment
- droughtt0
- Outcome
- root biomasse0
- Direction
- not decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root biomass was not decreased in genotype I700”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
I700 had the longer root system and highest root-to-shoot ratio.
- Taxon
- soybeanGlycine maxt0
- Material
- I700e0
- Outcome
- longer root system with the highest root‐to‐shoot ratioe0
- Direction
- longere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotype I700 displayed a longer root system with the highest root‐to‐shoot ratio”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
I700 recovered root growth more efficiently after irrigation recovery.
- Taxon
- soybeanGlycine maxt0
- Material
- I700e1
- Treatment
- recovery irrigatione0
- Outcome
- root growthe0
- Direction
- more efficientlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recovered root growth more efficiently after recovery irrigation”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
I700 could provide genetic material to improve drought root traits.
- Taxon
- soybeanGlycine maxt0
- Outcome
- genetic source to improve root traits to cope with droughte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it could be used as a genetic source to improve root traits to cope with drought”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
Claim · model-written summary
Root morphology and biomass traits are suitable for selecting drought-tolerant genotypes.
- Taxon
- soybeanGlycine maxe0
- Outcome
- suitable for selecting drought stress–tolerant soybean genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Morphological and biomass root traits are suitable for selecting drought stress–tolerant soybean genotypes”
t0“Exploring Drought Responses in Mexican Soybeans: Plant Water Status, Shoot and Root Biomass, and Root System Architecture”
e1“Intermediate genotypes, I1240 and I700, avoided drought stress achieving a greater root system at a higher plant water potential.”
The same questions in other papers
drought · growth · Glycine max (soybean)Positive and negative results
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- negative
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