Abstract
The ability of an individual soybean [ Glycine max (L.) Merr.] seed to utilize assimilate is an important part of the yield production process. Cotyledon cell number is a major determinant of genetic differences in seed growth rate. Experiments were conducted in the field and greenhouse with ‘McCall’, ‘Williams’, and ‘York’ cultivars to determine if source‐sink alterations would affect cotyledon cell number. Source‐sink alteration treatments (66% defoliation, 80% depodding, and 63% insolation reduction) were applied when tagged fruits were 20 to 25 mm long. Seeds from the tagged fruits were harvested at maturity and cotyledon cells were counted. Defoliation or shading reduced cotyledon cell number by 21 to 55% for McCall and York in the greenhouse and Williams in the field. Depodding increased cotyledon cell number by 26 to 102%. Cotyledon growth rates in an in vitro culture system increased with increasing sucrose concentrations and reached a maximum at 100 to 200 m M . Cotyledon growth rates in vitro with saturating levels of sucrose and asparagine were closely correlated with cotyledon cell number across treatments and genotypes. The data indicate that cotyledon cell number in soybean is influenced by the physiological environment during the cell division phase of seed development and that both cotyledon cell number and assimilate supply are important in determining seed growth rate.
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Claims 7
Claim · model-written summary
Defoliation reduced cotyledon cell number by 21 to 55%.
- Taxon
- soybean
Glycine maxe1 - Treatment
- Defoliatione0
- Outcome
- cotyledon cell numbere0
- Direction
- reducede0
- Value
- 21 to 55%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation or shading reduced cotyledon cell number by 21 to 55% for McCall and York in the greenhouse and Williams in the field.”
e1“soybean [ Glycine max (L.) Merr.] seed”
Claim · model-written summary
Shading reduced cotyledon cell number by 21 to 55%.
- Taxon
- soybeanGlycine maxe1
- Treatment
- shadinge0
- Outcome
- cotyledon cell numbere0
- Direction
- reducede0
- Value
- 21 to 55%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation or shading reduced cotyledon cell number by 21 to 55% for McCall and York in the greenhouse and Williams in the field.”
e1“soybean [ Glycine max (L.) Merr.] seed”
Claim · model-written summary
Depodding increased cotyledon cell number by 26 to 102%.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Depoddinge0
- Outcome
- cotyledon cell numbere0
- Direction
- increasede0
- Value
- 26 to 102%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Depodding increased cotyledon cell number by 26 to 102%.”
e1“soybean [ Glycine max (L.) Merr.] seed”
Claim · model-written summary
In vitro cotyledon growth rates rose with sucrose concentration and peaked at 100 to 200 m M.
- Taxon
- soybeanGlycine maxe1
- Treatment
- increasing sucrose concentrationse0
- Outcome
- Cotyledon growth ratese0
- Direction
- increasede0
- Value
- 100 to 200 m Me0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotyledon growth rates in an in vitro culture system increased with increasing sucrose concentrations and reached a maximum at 100 to 200 m M .”
e1“soybean [ Glycine max (L.) Merr.] seed”
Claim · model-written summary
Cotyledon growth rates under saturating sucrose and asparagine correlated with cotyledon cell number.
- Taxon
- soybeanGlycine maxe1
- Treatment
- saturating levels of sucrose and asparaginee0
- Outcome
- Cotyledon growth ratese0
- Qualifier
- closely correlated with cotyledon cell numbere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotyledon growth rates in vitro with saturating levels of sucrose and asparagine were closely correlated with cotyledon cell number across treatments and genotypes.”
e1“soybean [ Glycine max (L.) Merr.] seed”
Claim · model-written summary
Cotyledon cell number is influenced by the physiological environment during cell division.
- Taxon
- soybeanGlycine maxe0
- Outcome
- cotyledon cell numbere0
- Qualifier
- physiological environment during the cell division phase of seed developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cotyledon cell number in soybean is influenced by the physiological environment during the cell division phase of seed development”
Claim · model-written summary
Both cotyledon cell number and assimilate supply determine seed growth rate.
- Taxon
- soybeanGlycine maxe1
- Outcome
- seed growth ratee0
- Qualifier
- both cotyledon cell number and assimilate supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both cotyledon cell number and assimilate supply are important in determining seed growth rate.”
e1“cotyledon cell number in soybean”
The same questions in other papers
sucrose · growth · Glycine max (soybean)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →shade · cytology · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.