Abstract
Exogenous application of cytokinin to raceme tissues of soybean ( Glycine max (L.) Merr.) has been shown to stimulate flower production and to prevent flower abortion. The effects of these hormone applications have been ascertained for treated tissues, but the effects of cytokinins on total seed yields in treated plants have not been evaluated. Our objectives were to examine the effects of systemic cytokinin applications on soybean yields using an experimental line of soybeans, SD-87001, that has been shown to be highly sensitive to exogenous cytokinin application. Soybeans were grown hydroponically or in pots in the greenhouse, and 6-benzylaminopurine (BA) was introduced into the xylem stream through a cotton wick for 2 weeks during anthesis. After the plants had matured, the number of pods, seeds per pod, and the total seed weight per plant were measured. In the greenhouse, application of 3.4 × 10 −7 moles of BA resulted in a 79% increase in seed yield compared with controls. Results of field trials showed much greater variability within treatments, with consistent, but non-significant increases in seed number and total yields of about 3%. Data suggest that cytokinin levels play a significant role in determining total yield in soybeans, and that increasing cytokinin concentrations in certain environments may result in increased total seed production. Copyright 2001 Annals of Botany Company
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Claims 5
Claim · model-written summary
Greenhouse BA application increased soybean seed yield by 79% compared with controls.
- Taxon
- soybean
Glycine maxt0 - Treatment
- application of 3.4 × 10 −7 moles of BAe0
- Outcome
- seed yielde0
- Direction
- increasee0
- Value
- 79%e0
- Comparator
- controlse0
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the greenhouse, application of 3.4 × 10 −7 moles of BA resulted in a 79% increase in seed yield compared with controls”
t0“Soybeans”
Claim · model-written summary
Field cytokinin treatment produced a nonsignificant increase of about 3% in seed number.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Cytokinint0
- Outcome
- seed numbere0
- Direction
- increasese0
- Value
- about 3%e0
- Setting
- field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of field trials showed much greater variability within treatments, with consistent, but non-significant increases in seed number and total yields of about 3%”
t0“Cytokinin Regulation of Flower and Pod Set in Soybeans”
Claim · model-written summary
Field cytokinin treatment produced a nonsignificant increase of about 3% in total yields.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Cytokinint0
- Outcome
- total yieldse0
- Direction
- increasese0
- Value
- about 3%e0
- Setting
- field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of field trials showed much greater variability within treatments, with consistent, but non-significant increases in seed number and total yields of about 3%”
t0“Cytokinin Regulation of Flower and Pod Set in Soybeans”
Claim · model-written summary
Cytokinin levels may help determine total soybean yield.
- Taxon
- soybeansGlycine maxe0
- Compound
- cytokinin levelse0
- Outcome
- total yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data suggest that cytokinin levels play a significant role in determining total yield in soybeans”
Claim · model-written summary
Increasing cytokinin concentrations may increase seed production in certain environments.
- Taxon
- soybeansGlycine maxt0
- Compound
- cytokinin concentrationse0
- Outcome
- total seed productione0
- Direction
- increasede0
- Qualifier
- certain environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing cytokinin concentrations in certain environments may result in increased total seed production”
t0“soybeans”
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See all 43 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.