Abstract
Abstract: The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions, and their capacity for recovery after rewetting, based on yield components. The genotypes evaluated in a greenhouse were the following: 'BRS 317', susceptible to drought; R01-581F and R02-1325, which show biological nitrogen fixation tolerant to drought; and the BRB14-207525, BRB14-207526, BRB14-207527 breed lines resulting from crossings between commercial genotypes and PI 471938, which shows a slow-wilting phenotype under drought. Drought conditions were applied to the genotypes at the full-flowering stage (R2) for ten days, whereas control plants were kept well-watered. Photosynthetic rate and gas exchanges under drought were more stable in the BRB14-207526 genotype. Root biomass increased 3.5 times in R02-1325 as an adaptive response to drought. In addition, leaf ureides - a trait related to biological nitrogen fixation in plants tolerant to drought - remained stable in genotypes R02-1325 and R01-581F exposed to drought, but decreased in BRB14-207527. Genotypes BRB14-207526, BRB14-207527, and R02-1325 show more favorable physiological performances and a lower accumulation of ureides under drought, besides a higher grain yield after rehydration. The BRB14-207526 and BRB14-207527 progenies show drought-tolerance traits from PI 471938, whereas R02-1325 is a promising source of tolerance to drought for soybean breeding.
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Claims 8
Claim · model-written summary
Photosynthetic rate and gas exchanges were more stable under drought in BRB14-207526 than in control plants.
- Taxon
- soybean
Glycine maxe0 - Material
- BRB14-207526e1
- Treatment
- Drought conditionse2
- Outcome
- Photosynthetic rate and gas exchangese1
- Direction
- more stablee1
- Comparator
- control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e1“Photosynthetic rate and gas exchanges under drought were more stable in the BRB14-207526 genotype”
e2“Drought conditions were applied to the genotypes at the full-flowering stage (R2) for ten days, whereas control plants were kept well-watered”
Claim · model-written summary
Root biomass increased 3.5 times in R02-1325 under drought.
- Taxon
- soybeanGlycine maxe0
- Material
- R02-1325e3
- Treatment
- droughte3
- Outcome
- Root biomasse3
- Direction
- increasede3
- Value
- 3.5 timese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e3“Root biomass increased 3.5 times in R02-1325 as an adaptive response to drought”
Claim · model-written summary
Leaf ureides remained stable under drought in R02-1325 and R01-581F.
- Taxon
- soybeanGlycine maxe0
- Material
- R02-1325 and R01-581Fe4
- Treatment
- droughte4
- Outcome
- leaf ureidese4
- Direction
- remained stablee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e4“leaf ureides - a trait related to biological nitrogen fixation in plants tolerant to drought - remained stable in genotypes R02-1325 and R01-581F exposed to drought, but decreased in BRB14-207527”
Claim · model-written summary
Leaf ureides decreased under drought in BRB14-207527.
- Taxon
- soybeanGlycine maxe0
- Material
- BRB14-207527e4
- Treatment
- droughte4
- Outcome
- leaf ureidese4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e4“leaf ureides - a trait related to biological nitrogen fixation in plants tolerant to drought - remained stable in genotypes R02-1325 and R01-581F exposed to drought, but decreased in BRB14-207527”
Claim · model-written summary
BRB14-207526, BRB14-207527 and R02-1325 showed more favorable physiological performance under drought.
- Taxon
- soybeanGlycine maxe0
- Material
- BRB14-207526, BRB14-207527, and R02-1325e5
- Treatment
- droughte5
- Outcome
- physiological performancese5
- Direction
- more favorablee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e5“Genotypes BRB14-207526, BRB14-207527, and R02-1325 show more favorable physiological performances and a lower accumulation of ureides under drought, besides a higher grain yield after rehydration”
Claim · model-written summary
BRB14-207526, BRB14-207527 and R02-1325 accumulated less ureides under drought.
- Taxon
- soybeanGlycine maxe0
- Material
- BRB14-207526, BRB14-207527, and R02-1325e5
- Treatment
- droughte5
- Outcome
- accumulation of ureidese5
- Direction
- lowere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e5“Genotypes BRB14-207526, BRB14-207527, and R02-1325 show more favorable physiological performances and a lower accumulation of ureides under drought, besides a higher grain yield after rehydration”
Claim · model-written summary
BRB14-207526, BRB14-207527 and R02-1325 gave a higher grain yield after rehydration.
- Taxon
- soybeanGlycine maxe0
- Material
- BRB14-207526, BRB14-207527, and R02-1325e5
- Treatment
- rehydratione5
- Outcome
- grain yielde5
- Direction
- highere5
- Qualifier
- after rehydratione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e5“Genotypes BRB14-207526, BRB14-207527, and R02-1325 show more favorable physiological performances and a lower accumulation of ureides under drought, besides a higher grain yield after rehydration”
Claim · model-written summary
R02-1325 is a promising source of drought tolerance for soybean breeding.
- Taxon
- soybeanGlycine maxe6
- Material
- R02-1325e6
- Outcome
- promising source of tolerance to drought for soybean breedinge6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions”
e6“R02-1325 is a promising source of tolerance to drought for soybean breeding”
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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.