Abstract
Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage. Leaf total electrochemical water potential was reduced to about -24 bars during the 4-day drying cycle at all temperatures, but recovered to control levels upon rewatering. The changes in dry matter accumulation in whole plants and plant parts, specific activity of nodules as measured by acetylene reduction, and levels of adenosine phosphates in nodules were measured periodically during stress and recovery.Vegetative and reproductive growth were about equally suppressed by the leaf moisture stress. Both rate of appearance and number of pods were reduced. However, a similar average weight per pod for both stressed and control plants at the conclusion of the recovery period suggests that individual pod development is not irreversibly affected by a single stress cycle and that yield potential is restricted by a decrease in number of pods or seed. Dry matter accumulation in plants and pods was unaffected by temperature.Specific nodule activity and energy charge of nodules declined concurrently with leaf moisture potential. Recovery of specific nodule activity following rewatering lagged behind recovery of leaf moisture potential, but energy charge of nodules recovered as rapidly as leaf moisture potential upon rewatering. Thus, the delayed recovery of specific nodule activity does not appear to be related to recovery of energy charge of the nodules.
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Claims 11
Claim · model-written summary
Leaf total electrochemical water potential of soybean fell to about -24 bars during a 4-day drying cycle, compared with control levels.
- Taxon
- Soybean
Glycine maxe0 - Treatment
- 4-day drying cyclee1
- Outcome
- Leaf total electrochemical water potentiale1
- Direction
- reducede1
- Value
- -24 barse1
- Comparator
- control levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e1“Leaf total electrochemical water potential was reduced to about -24 bars during the 4-day drying cycle at all temperatures, but recovered to control levels upon rewatering”
Claim · model-written summary
Leaf total electrochemical water potential of soybean recovered to control levels after rewatering.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- rewateringe1
- Outcome
- Leaf total electrochemical water potentiale1
- Direction
- recoverede1
- Comparator
- control levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e1“Leaf total electrochemical water potential was reduced to about -24 bars during the 4-day drying cycle at all temperatures, but recovered to control levels upon rewatering”
Claim · model-written summary
Vegetative and reproductive growth of soybean were about equally suppressed by leaf moisture stress.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- leaf moisture stresse2
- Outcome
- Vegetative and reproductive growthe2
- Direction
- suppressede2
- Qualifier
- about equallye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e2“Vegetative and reproductive growth were about equally suppressed by the leaf moisture stress. Both rate of appearance and number of pods were reduced”
Claim · model-written summary
Leaf moisture stress reduced the rate of appearance and number of pods of soybean.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- leaf moisture stresse2
- Outcome
- rate of appearance and number of podse2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e2“Vegetative and reproductive growth were about equally suppressed by the leaf moisture stress. Both rate of appearance and number of pods were reduced”
Claim · model-written summary
Dry matter accumulation in soybean plants and pods was unaffected by temperature.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- temperaturee3
- Outcome
- Dry matter accumulation in plants and podse3
- Direction
- unaffectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e3“Dry matter accumulation in plants and pods was unaffected by temperature”
Claim · model-written summary
After a single stress cycle, soybean pods had a similar average weight in stressed and control plants.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- a single stress cyclee4
- Outcome
- average weight per pode4
- Direction
- similare4
- Comparator
- control plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e4“However, a similar average weight per pod for both stressed and control plants at the conclusion of the recovery period suggests that individual pod development is not irreversibly affected by a single stress cycle and that yield potential is restricted by a decrease in number of pods or seed”
Claim · model-written summary
Yield potential of soybean is restricted by a decrease in number of pods or seed.
- Taxon
- SoybeanGlycine maxe0
- Outcome
- yield potentiale4
- Qualifier
- a decrease in number of pods or seede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e4“However, a similar average weight per pod for both stressed and control plants at the conclusion of the recovery period suggests that individual pod development is not irreversibly affected by a single stress cycle and that yield potential is restricted by a decrease in number of pods or seed”
Claim · model-written summary
Specific nodule activity and energy charge of soybean nodules declined with leaf moisture potential.
- Taxon
- SoybeanGlycine maxe0
- Organ / stage
- nodulese5
- Outcome
- Specific nodule activity and energy chargee5
- Direction
- declinede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e5“Specific nodule activity and energy charge of nodules declined concurrently with leaf moisture potential”
Claim · model-written summary
Recovery of specific nodule activity lagged behind recovery of leaf moisture potential after rewatering in soybean.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- rewateringe6
- Outcome
- Recovery of specific nodule activitye6
- Direction
- lagged behinde6
- Comparator
- recovery of leaf moisture potentiale6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e6“Recovery of specific nodule activity following rewatering lagged behind recovery of leaf moisture potential, but energy charge of nodules recovered as rapidly as leaf moisture potential upon rewatering”
Claim · model-written summary
Energy charge of soybean nodules recovered as rapidly as leaf moisture potential upon rewatering.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- upon rewateringe6
- Outcome
- energy charge of nodulese6
- Direction
- recovered as rapidly ase6
- Comparator
- leaf moisture potentiale6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e6“Recovery of specific nodule activity following rewatering lagged behind recovery of leaf moisture potential, but energy charge of nodules recovered as rapidly as leaf moisture potential upon rewatering”
Claim · model-written summary
The delayed recovery of specific nodule activity in soybean appears unrelated to recovery of nodule energy charge.
- Taxon
- SoybeanGlycine maxe0
- Outcome
- delayed recovery of specific nodule activitye7
- Comparator
- recovery of energy chargee7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
e7“Thus, the delayed recovery of specific nodule activity does not appear to be related to recovery of energy charge of the nodules”
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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.