Abstract
Priming of seeds in auxin solution is a model of the action of auxin-producing bacteria on plant growth. The aim of the study was to identify auxin concentrations that stimulate and inhibit the growth of seedlings of two varieties of beans. Seeds were soaked for 3 hours in tenfold dilutions of heteroauxin 0,00001–100 mg/l, germinated on wet filters in the dark, growth parameters (germination energy, germination, length of axial organs of the seedling, number and length of lateral and accessory roots, root and shoot weight) were measured on the 7th day. For the Ufa variety, an increase in all growth indicators by 25-36% relative to the control occurred only at a dose of 0,001 mg/l, while the shoot/root ratio of 1.8 was as in the control. Changing this dose by an order of magnitude led to a neutral or negative effect on all growth indicators. For the Elsa variety, the growth of the length of the main root on the gradient of hormone concentrations was characterized by a two-vertex graph with a maximum value of an increase in root length by 23% to the control at a dose of 0,1 mg/l hormone. At the same time, the shoot/root ratio is 1,0. According to other indicators, no stimulating effect was found. The presence of one or more pessimums of the values of the growth indicators of seedlings on the concentration curve indicates that in both varieties the range of stimulating concentration of exogenous auxin is very narrow. Therefore, to stimulate growth, it is necessary to use precision and individual concentrations of exogenous hormone for each variety.
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Claims 7
Claim · model-written summary
In the Ufa variety, all growth indicators rose by 25-36% relative to the control only at 0,001 mg/l heteroauxin.
Verbatim
t0“SEED TREATMENT WITH DIFFERENT DOSES OF HETEROAUXIN”
t1“TWO BEAN VARIETIES”
e0“The aim of the study was to identify auxin concentrations that stimulate and inhibit the growth of seedlings of two varieties of beans”
e1“For the Ufa variety, an increase in all growth indicators by 25-36% relative to the control occurred only at a dose of 0,001 mg/l”
Claim · model-written summary
Changing the dose by an order of magnitude had a neutral or negative effect on all growth indicators.
Verbatim
t1“TWO BEAN VARIETIES”
e3“Changing this dose by an order of magnitude led to a neutral or negative effect on all growth indicators”
Claim · model-written summary
In the Elsa variety, the main root length rose by 23% relative to the control at 0,1 mg/l hormone.
Verbatim
t1“TWO BEAN VARIETIES”
e2“For the Elsa variety, the growth of the length of the main root on the gradient of hormone concentrations was characterized by a two-vertex graph with a maximum value of an increase in root length by 23% to the control at a dose of 0,1 mg/l hormone”
Claim · model-written summary
In the Elsa variety, no stimulating effect was found on the other growth indicators.
- Taxon
- BEANt1
- Material
- Elsae4
- Treatment
- HETEROAUXINt0
- Outcome
- other indicatorse5
- Direction
- no stimulating effecte5
Not reportedComparator
Verbatim
t0“SEED TREATMENT WITH DIFFERENT DOSES OF HETEROAUXIN”
t1“TWO BEAN VARIETIES”
e4“For the Elsa variety”
e5“According to other indicators, no stimulating effect was found”
Claim · model-written summary
In the Ufa variety, the shoot/root ratio was as in the control.
Verbatim
t0“SEED TREATMENT WITH DIFFERENT DOSES OF HETEROAUXIN”
t1“TWO BEAN VARIETIES”
e6“For the Ufa variety”
e7“while the shoot/root ratio of 1.8 was as in the control”
Claim · model-written summary
The range of stimulating exogenous auxin concentrations is very narrow in both varieties.
Verbatim
t1“TWO BEAN VARIETIES”
e0“in both varieties the range of stimulating concentration of exogenous auxin is very narrow”
Claim · model-written summary
Precise, individual hormone concentrations for each variety are necessary to stimulate growth.
Verbatim
t1“TWO BEAN VARIETIES”
e0“it is necessary to use precision and individual concentrations of exogenous hormone for each variety”
The same questions in other papers
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17 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
28 papers more in this group
See all 32 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.