Abstract
In a two-year pot experiment (2008–2009) conducted at the Vegetation Hall, West Pomeranian University of Technology in Szczecin, we investigated the influence of exogenous growth regulators, i.e. indole-3-butyric acid (IBA) and 6-benzylaminopurine (BAP) and their mixture, on the activity of gas exchange and selected physiological features of soybeans (Glycine max L. Merr.). The experimental factors included the following Polish soybean cultivars: ‘Aldana’, ‘Progres’ and ‘Jutro’. During plant growth, CO2 assimilation (A), transpiration rate (E), stomatal conductance (gs), and substomatal CO2 concentration (ci) were determined. Two soybean cultivars, i.e. ‘Jutro’ and ‘Progres’, showed a significant increase in the intensity of assimilation and transpiration after using all kinds of growth regulators as compared with the control plants. It was found that the ‘Jutro’ cultivar, after using a mixture of growth regulators (IBA + BAP), was characterized by the significantly highest CO2 assimilation (A) and transpiration (E) as well as the highest stomatal conductance (gs). The ‘Aldana’ cultivar, on the other hand, responded by a significant reduction in the transpiration rate, stomatal conductance and subsomatal CO2 concentration. The spraying of the plants with exogenous growth regulators had a significant influence on the increase in the number of stomata and stomatal pore length, mostly on the lower epidermis of the lamina. It was also found that plants from the ‘Jutro’ and ‘Aldana’ cultivars sprayed with IBA and IBA + BAP were characterized by the highest yield, as compared with the control plants. In the case of the ‘Jutro’ cultivar, after using the growth regulators, a positive correlation was observed between the assimilation and transpiration rates and the length of stomata, which in consequence produced increased yields.
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Claims 7
Claim · model-written summary
Growth regulators increased assimilation and transpiration in Jutro and Progres.
- Taxon
- soybean
Glycine maxe0 - Material
- ‘Jutro’ and ‘Progres’e0
- Treatment
- all kinds of growth regulatorse0
- Outcome
- assimilation and transpiratione0
- Direction
- increasee0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two soybean cultivars, i.e. ‘Jutro’ and ‘Progres’, showed a significant increase in the intensity of assimilation and transpiration after using all kinds of growth regulators as compared with the control plants.”
Claim · model-written summary
IBA plus BAP gave Jutro the highest assimilation and transpiration.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Jutro’e0
- Treatment
- IBA + BAPe0
- Outcome
- CO2 assimilation (A) and transpiration (E)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ‘Jutro’ cultivar, after using a mixture of growth regulators (IBA + BAP), was characterized by the significantly highest CO2 assimilation (A) and transpiration (E) as well as the highest stomatal conductance (gs).”
t0“soybean”
Claim · model-written summary
IBA plus BAP gave Jutro the highest stomatal conductance.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Jutro’e0
- Treatment
- IBA + BAPe0
- Outcome
- stomatal conductance (gs)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ‘Jutro’ cultivar, after using a mixture of growth regulators (IBA + BAP), was characterized by the significantly highest CO2 assimilation (A) and transpiration (E) as well as the highest stomatal conductance (gs).”
t0“soybean”
Claim · model-written summary
Aldana had lower transpiration, conductance and substomatal carbon dioxide concentration.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Aldana’e0
- Treatment
- growth regulatorst0
- Outcome
- transpiration rate, stomatal conductance and subsomatal CO2 concentratione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ‘Aldana’ cultivar, on the other hand, responded by a significant reduction in the transpiration rate, stomatal conductance and subsomatal CO2 concentration.”
t0“soybean (Glycine max L. Merr.) under the influence of exogenous growth regulators”
Claim · model-written summary
Growth regulator spraying increased stomata number and pore length.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- lower epidermis of the laminae0
- Treatment
- exogenous growth regulatorse0
- Outcome
- number of stomata and stomatal pore lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The spraying of the plants with exogenous growth regulators had a significant influence on the increase in the number of stomata and stomatal pore length, mostly on the lower epidermis of the lamina.”
t0“soybean”
Claim · model-written summary
IBA and IBA plus BAP produced the highest yields in Jutro and Aldana.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Jutro’ and ‘Aldana’e0
- Treatment
- IBA and IBA + BAPe0
- Outcome
- yielde0
- Direction
- higheste0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants from the ‘Jutro’ and ‘Aldana’ cultivars sprayed with IBA and IBA + BAP were characterized by the highest yield, as compared with the control plants.”
t0“soybean”
Claim · model-written summary
Jutro assimilation and transpiration were positively correlated with stomatal length after regulator use.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Jutro’e0
- Organ / stage
- stomatae0
- Treatment
- growth regulatorse0
- Outcome
- assimilation and transpiration ratese0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of the ‘Jutro’ cultivar, after using the growth regulators, a positive correlation was observed between the assimilation and transpiration rates and the length of stomata, which in consequence produced increased yields.”
t0“soybean”
The same questions in other papers
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- no effect
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class · physiology: gas exchange · Glycine max (soybean)Results agree
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- positive
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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.