Abstract
Drought is a significant abiotic stress that limits crop production. Soybeans [Glycine max (L.) Merr.] are regarded as drought-sensitive. In the present study, the drought responses of wild soybean accessions were evaluated at different growth stages. Based on the leaf wilting index of 411 accessions at the vegetative stage, seven highly tolerant (HT) and 24 tolerant (T) accessions were identified, although most wild soybeans were classified as moderate (M), sensitive (S), and highly sensitive (HS) genotypes. In addition, with selected wild soybeans, stomatal density decreased in HT accessions but increased in HS accessions under drought conditions at the vegetative stage. However, for cultivated soybeans, the stomatal density of the drought-tolerant and drought-sensitive were not significantly different between the two conditions. The expression levels of drought-related transcriptional factors indicated that the HT genotype showed a higher expression level of drought-related genes than that of the HS genotype at the vegetative stage. At the reproductive stages, 12 wild soybeans randomly selected from HT, T, S, and HS based on assessment at the vegetative stage showed consistent drought responses with seed yield, root development, and water status. However, the extent of the detrimental effect of drought on the germination rates and root length of 165 wild soybeans at the germination stage varied depending on the genotype, indicating that there may not be a robust correlation between phenotypic measurements at the germination stage and drought-related assessments at the two growth stages. The information from this study can provide useful breeding materials for the development of drought-tolerant cultivars from wild soybeans.
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Claims 9
Claim · model-written summary
Seven highly tolerant and 24 tolerant wild soybean accessions were identified at the vegetative stage.
- Taxon
- Soybean
Glycine maxt0 - Organ / stage
- vegetative stagee0
- Outcome
- highly tolerant (HT) and 24 tolerant (T) accessionse0
- Value
- seven highly tolerant (HT) and 24 tolerant (T)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on the leaf wilting index of 411 accessions at the vegetative stage, seven highly tolerant (HT) and 24 tolerant (T) accessions were identified, although most wild soybeans were classified as moderate (M), sensitive (S), and highly sensitive (HS) genotypes.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Most wild soybeans were classified as moderate, sensitive, or highly sensitive at the vegetative stage.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- vegetative stagee0
- Outcome
- moderate (M), sensitive (S), and highly sensitive (HS) genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on the leaf wilting index of 411 accessions at the vegetative stage, seven highly tolerant (HT) and 24 tolerant (T) accessions were identified, although most wild soybeans were classified as moderate (M), sensitive (S), and highly sensitive (HS) genotypes.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Stomatal density fell in highly tolerant wild soybean accessions under drought.
- Taxon
- SoybeanGlycine maxt0
- Material
- HT accessionse0
- Organ / stage
- vegetative stagee0
- Treatment
- drought conditionse0
- Outcome
- stomatal densitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with selected wild soybeans, stomatal density decreased in HT accessions but increased in HS accessions under drought conditions at the vegetative stage.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Stomatal density rose in highly sensitive wild soybean accessions under drought.
- Taxon
- SoybeanGlycine maxt0
- Material
- HS accessionse0
- Organ / stage
- vegetative stagee0
- Treatment
- drought conditionse0
- Outcome
- stomatal densitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with selected wild soybeans, stomatal density decreased in HT accessions but increased in HS accessions under drought conditions at the vegetative stage.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Cultivated drought-tolerant and drought-sensitive soybeans showed no significant stomatal-density difference between conditions.
- Taxon
- SoybeanGlycine maxt0
- Material
- cultivated soybeanse0
- Outcome
- stomatal densitye0
- Direction
- not significantly differente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cultivated soybeans, the stomatal density of the drought-tolerant and drought-sensitive were not significantly different between the two conditions.”
t0“Wild Soybean Accessions”
Claim · model-written summary
The highly tolerant genotype had greater drought-related gene expression than the highly sensitive genotype at the vegetative stage.
- Taxon
- SoybeanGlycine maxt0
- Material
- HT genotypee0
- Organ / stage
- vegetative stagee0
- Outcome
- expression level of drought-related genese0
- Direction
- highere0
- Comparator
- HS genotypee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the HT genotype showed a higher expression level of drought-related genes than that of the HS genotype at the vegetative stage.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Wild soybean accessions retained consistent drought responses at reproductive stages based on seed yield, root development, and water status.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- reproductive stagese0
- Outcome
- consistent drought responses with seed yield, root development, and water statuse0
- Value
- 12 wild soybeanse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the reproductive stages, 12 wild soybeans randomly selected from HT, T, S, and HS based on assessment at the vegetative stage showed consistent drought responses with seed yield, root development, and water status.”
t0“Wild Soybean Accessions”
Claim · model-written summary
Drought effects on germination rates and root length varied by genotype at the germination stage.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- germination stagee0
- Treatment
- droughte0
- Outcome
- germination rates and root lengthe0
- Direction
- detrimentale0
- Value
- 165 wild soybeanse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extent of the detrimental effect of drought on the germination rates and root length of 165 wild soybeans at the germination stage varied depending on the genotype”
t0“Wild Soybean Accessions”
Claim · model-written summary
Germination-stage measurements may not correlate robustly with drought assessments at later stages.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- germination stagee0
- Outcome
- correlation between phenotypic measurements at the germination stage and drought-related assessmentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there may not be a robust correlation between phenotypic measurements at the germination stage and drought-related assessments at the two growth stages.”
t0“Wild Soybean Accessions”
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See all 211 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.