Abstract
Seed size in different seed position and its spatial distribution across main stem were investigated by glyphosate-resistant soybean cultivar SV19-U2 grown under both ambient and light-enriched conditions at low and high densities.Obvious effect of seed position on seed size was found.Seed size of first-seeded position within several-seeded pod was minimal.In two,three and four-seeded pod,the seed size of second-seeded position was 10.6%,14.8% and 17.3% larger than that of first-seeded position.Light enrichment and high density increased seed size of first-seeded position by 17.7%-27.9%.The increment in seed size from first-seeded position was greater than that from second-,third-and fourth-seeded position,while the inherent seed size character in different position was not changed.The spatial distribution of seed size from different seed position across main stem showed the spinning shape from top to bottom.Seed size at bottom node position was smaller,and was larger at middle node position.The curve of seed size's spatial distribution across main stem was even and seed size in one-seeded pod was much sensitive to light and density conditions.Under high density,light enrichment imposed more influence on seed size at top node position than at lower node position.The more seed number in a pod could decrease the increment of single seed size.It is proposed that seed size at different position might not be directly related to the sequence of seed filling,and seed size is modulated by assimilate distribution mechanism within pod.
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Claims 14
Claim · model-written summary
Seed size at the first-seeded position within a several-seeded pod was minimal.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- first-seeded position within several-seeded pode1
- Outcome
- Seed size of first-seeded positione1
- Direction
- minimale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e1“Seed size of first-seeded position within several-seeded pod was minimal”
Claim · model-written summary
In two-seeded pods, seed size of the second-seeded position was 10.6% larger than that of the first-seeded position.
- Taxon
- soybean
Glycine maxt0 - Outcome
- seed size of second-seeded positione2
- Direction
- largere2
- Value
- 10.6%e2
- Comparator
- first-seeded positione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e2“In two,three and four-seeded pod,the seed size of second-seeded position was 10.6%,14.8% and 17.3% larger than that of first-seeded position”
Claim · model-written summary
In three-seeded pods, seed size of the second-seeded position was 14.8% larger than that of the first-seeded position.
- Taxon
- soybean
Glycine maxt0 - Outcome
- seed size of second-seeded positione2
- Direction
- largere2
- Value
- 14.8%e2
- Comparator
- first-seeded positione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e2“In two,three and four-seeded pod,the seed size of second-seeded position was 10.6%,14.8% and 17.3% larger than that of first-seeded position”
Claim · model-written summary
In four-seeded pods, seed size of the second-seeded position was 17.3% larger than that of the first-seeded position.
- Taxon
- soybean
Glycine maxt0 - Outcome
- seed size of second-seeded positione2
- Direction
- largere2
- Value
- 17.3%e2
- Comparator
- first-seeded positione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e2“In two,three and four-seeded pod,the seed size of second-seeded position was 10.6%,14.8% and 17.3% larger than that of first-seeded position”
Claim · model-written summary
Light enrichment and high density increased seed size of the first-seeded position by 17.7%-27.9%.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Light enrichment and high densitye3
- Outcome
- seed size of first-seeded positione3
- Direction
- increasede3
- Value
- 17.7%-27.9%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e3“Light enrichment and high density increased seed size of first-seeded position by 17.7%-27.9%”
Claim · model-written summary
The increment in seed size from the first-seeded position was greater than from the second-, third- and fourth-seeded positions.
- Taxon
- soybean
Glycine maxt0 - Outcome
- increment in seed size from first-seeded positione4
- Direction
- greatere4
- Comparator
- second-,third-and fourth-seeded positione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e4“The increment in seed size from first-seeded position was greater than that from second-,third-and fourth-seeded position”
Claim · model-written summary
The inherent seed size character did not change across seed positions.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- different positione5
- Outcome
- inherent seed size character in different positione5
- Direction
- not changede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e5“while the inherent seed size character in different position was not changed”
Claim · model-written summary
Across the main stem, the spatial distribution of seed size showed a spinning shape from top to bottom.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- main steme6
- Outcome
- spatial distribution of seed size from different seed position across main steme6
- Qualifier
- spinning shape from top to bottome6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e6“The spatial distribution of seed size from different seed position across main stem showed the spinning shape from top to bottom”
Claim · model-written summary
Seed size at the bottom node position was smaller than at the middle node position.
- Taxon
- soybean
Glycine maxt0 - Outcome
- Seed size at bottom node positione7
- Direction
- smallere7
- Comparator
- middle node positione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e7“Seed size at bottom node position was smaller,and was larger at middle node position”
Claim · model-written summary
Seed size at the middle node position was larger than at the bottom node position.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- middle node positione7
- Outcome
- Seed sizee7
- Direction
- largere7
- Comparator
- bottom node positione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e7“Seed size at bottom node position was smaller,and was larger at middle node position”
Claim · model-written summary
Seed size in one-seeded pods was much sensitive to light and density conditions.
- Taxon
- soybean
Glycine maxt0 - Treatment
- light and density conditionse1
- Outcome
- seed size in one-seeded pode1
- Qualifier
- much sensitivee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e1“seed size in one-seeded pod was much sensitive to light and density conditions”
Claim · model-written summary
Under high density, light enrichment had more influence on seed size at the top node position than at the lower node position.
- Taxon
- soybean
Glycine maxt0 - Treatment
- light enrichmente2
- Outcome
- influence on seed size at top node positione2
- Direction
- moree2
- Qualifier
- Under high densitye2
- Comparator
- lower node positione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e2“Under high density,light enrichment imposed more influence on seed size at top node position than at lower node position”
Claim · model-written summary
More seeds per pod could decrease the increment of single seed size.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- pode3
- Outcome
- increment of single seed sizee3
- Direction
- decreasee3
- Qualifier
- more seed number in a pode3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e3“The more seed number in a pod could decrease the increment of single seed size”
Claim · model-written summary
Seed size is proposed to be modulated by an assimilate distribution mechanism within the pod.
- Taxon
- soybean
Glycine maxt0 - Outcome
- seed sizee4
- Qualifier
- assimilate distribution mechanism within pode4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Soybean”
e4“seed size is modulated by assimilate distribution mechanism within pod”