Abstract
The use of a new high sensitive method (accuracy 0.07 µm) laser interference auxanometry makes it possible to perform rapid diagnostics of oat plants at different growing conditions and selection of genotypes tolerant to stress. Oat plants cv. Horizont of sand and water cultures were used. The growth rate of plant leaves was measured by laser interference auxanometer with 10 sec or 1 min intervals during few hours every day. NaCl solution was added to the root zone to concentration 50 mM, 80 mM, 130 mM. In some experiments the roots were washed of NaCl with subsequent measurement of leaf growth rate. Antioxidant ambiol was added twice with one day interval to the root zone to concentration 1.7 µM. It was demonstrated that oat plants grown under deficiency of mineral nutrition had a low leaf growth rate. A significant increase was observed after single addition of antioxidant ambiol. In this case the leaf growth rate increased in two stages: rapid and a slower one. The leaf growth rate increased 4-fold when ambiol was added twice. Addition of NaCl to the root zone caused a two phase response reaction of plant leaves: decrease and the following increase in their growth rate. Secondary addition of NaCl led to a more significant decrease in leaf growth rate than at first addition of NaCl. The leaf growth restarted with low rate after less than 1 h during first phase. Restoration of leaf growth rate during the second phase at secondary and following additions of salt was partial (it did not achieve the initial level) and was more prolonged than at single addition of salt. The leaf growth rate increased at decrease in NaCl concentration at the root zone as result of addition of water or washing the roots of NaCl. At prolonged growing of oat plants at increased NaCl concentrations the yellowing and drying of the leaf ends was observed. The growth of this plant was suppressed as compared to control plants. Our results demonstrate the potentiality of laser interference auxanometry for evaluation of the changes in growth under different growing conditions.
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Claims 12
Claim · model-written summary
Laser interference auxanometry allows rapid diagnosis of oat plants with 0.07 µm accuracy.
- Taxon
- oat plants
Avena sativae0 - Outcome
- rapid diagnostics of oat plantse0
- Value
- 0.07 µme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of a new high sensitive method (accuracy 0.07 µm) laser interference auxanometry makes it possible to perform rapid diagnostics of oat plants at different growing conditions”
Claim · model-written summary
Mineral nutrient deficiency produced a low oat leaf growth rate.
- Taxon
- oat plantsAvena sativae0
- Treatment
- deficiency of mineral nutritione0
- Outcome
- leaf growth ratee0
- Direction
- lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oat plants grown under deficiency of mineral nutrition had a low leaf growth rate”
Claim · model-written summary
A single ambiol addition significantly increased leaf growth rate in rapid and slower stages.
- Taxon
- oat plantsAvena sativat0
- Treatment
- single addition of antioxidant ambiole0
- Outcome
- leaf growth ratee0
- Direction
- increasede0
- Qualifier
- two stages: rapid and a slower onee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase was observed after single addition of antioxidant ambiol. In this case the leaf growth rate increased in two stages: rapid and a slower one.”
t0“oat plants”
Claim · model-written summary
Twice adding ambiol increased oat leaf growth rate fourfold.
- Taxon
- oat plantsAvena sativat0
- Treatment
- ambiol was added twicee0
- Outcome
- leaf growth ratee0
- Direction
- increasede0
- Value
- 4-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf growth rate increased 4-fold when ambiol was added twice.”
t0“oat plants”
Claim · model-written summary
NaCl initially decreased leaf growth rate.
- Taxon
- oat plantsAvena sativat0
- Treatment
- Addition of NaCl to the root zonee0
- Outcome
- growth ratee0
- Direction
- decreasee0
- Qualifier
- two phase responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl to the root zone caused a two phase response reaction of plant leaves: decrease and the following increase in their growth rate.”
t0“oat plants”
Claim · model-written summary
NaCl subsequently increased leaf growth rate after the initial decrease.
- Taxon
- oat plantsAvena sativat0
- Treatment
- Addition of NaCl to the root zonee0
- Outcome
- growth ratee0
- Direction
- increasee0
- Qualifier
- followinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl to the root zone caused a two phase response reaction of plant leaves: decrease and the following increase in their growth rate.”
t0“oat plants”
Claim · model-written summary
A second NaCl addition decreased leaf growth rate more than the first addition.
- Taxon
- oat plantsAvena sativat0
- Treatment
- Secondary addition of NaCle0
- Outcome
- leaf growth ratee0
- Direction
- decreasee0
- Comparator
- first addition of NaCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Secondary addition of NaCl led to a more significant decrease in leaf growth rate than at first addition of NaCl.”
t0“oat plants”
Claim · model-written summary
Leaf growth restarted at a low rate within an hour in the first phase.
- Taxon
- oat plantsAvena sativat0
- Outcome
- leaf growth restarted with low ratee0
- Value
- less than 1 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf growth restarted with low rate after less than 1 h during first phase.”
t0“oat plants”
Claim · model-written summary
After repeated salt additions, leaf growth rate recovery was partial and slower than after one addition.
- Taxon
- oat plantsAvena sativat0
- Treatment
- secondary and following additions of salte0
- Outcome
- Restoration of leaf growth ratee0
- Direction
- partiale0
- Qualifier
- did not achieve the initial levele0
- Comparator
- single addition of salte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoration of leaf growth rate during the second phase at secondary and following additions of salt was partial (it did not achieve the initial level) and was more prolonged than at single addition of salt.”
t0“oat plants”
Claim · model-written summary
Reducing NaCl concentration through water addition or root washing increased leaf growth rate.
- Taxon
- oat plantsAvena sativat0
- Treatment
- addition of water or washing the roots of NaCle0
- Outcome
- leaf growth ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf growth rate increased at decrease in NaCl concentration at the root zone as result of addition of water or washing the roots of NaCl.”
t0“oat plants”
Claim · model-written summary
Prolonged high NaCl caused yellowing and drying of oat leaf ends.
- Taxon
- oat plantsAvena sativae0
- Treatment
- increased NaCl concentrationse0
- Outcome
- yellowing and drying of the leaf endse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At prolonged growing of oat plants at increased NaCl concentrations the yellowing and drying of the leaf ends was observed.”
Claim · model-written summary
Prolonged high NaCl suppressed oat growth relative to controls.
- Taxon
- oat plantsAvena sativae0
- Treatment
- increased NaCl concentrationse0
- Outcome
- growth of this plante0
- Direction
- suppressede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At prolonged growing of oat plants at increased NaCl concentrations the yellowing and drying of the leaf ends was observed. The growth of this plant was suppressed as compared to control plants.”
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See all 5 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.