Abstract
Abstract Over three consecutive years in central Mississippi, sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June. Sweetgum seeds were physiologically mature by mid-August, but dry weight increased until late September. As sweetgum seeds matured, the crude fat level rose to 27 percent of seed dry weight. During maturation, concentrations of soluble nitrogen, soluble carbohydrates, and magnesium decreased, while those of protein nitrogen and phosphorus increased. Sycamore seeds became physiologically mature by early September. Chemical changes in sycamore were similar to those in sweetgum, except that the major food reserves were carbohydrates and not fats. Forest Sci. 18:223-231.
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Claims 8
Claim · model-written summary
Sweetgum fruits had nearly reached full size by late June in central Mississippi.
- Taxon
- sweetgum
Liquidambar styracifluae0 - Outcome
- fruits had nearly reached full-sizee0
- Value
- late Junee0
- Setting
- central Mississippie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e2“Over three consecutive years in central Mississippi”
Claim · model-written summary
Sweetgum seeds became physiologically mature by mid-August.
- Taxon
- sweetgumLiquidambar styracifluae0
- Organ / stage
- seedse1
- Outcome
- physiologically maturee1
- Value
- mid-Auguste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e1“Sweetgum seeds were physiologically mature by mid-August, but dry weight increased until late September”
Claim · model-written summary
Dry weight of sweetgum seeds increased until late September.
- Taxon
- sweetgumLiquidambar styracifluae0
- Outcome
- dry weighte1
- Direction
- increasede1
- Qualifier
- until late Septembere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e1“Sweetgum seeds were physiologically mature by mid-August, but dry weight increased until late September”
Claim · model-written summary
The crude fat level of sweetgum seeds rose to 27 percent of seed dry weight during maturation.
- Taxon
- sweetgumLiquidambar styracifluae0
- Organ / stage
- seede3
- Outcome
- crude fat levele3
- Direction
- rosee3
- Value
- 27 percente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e3“As sweetgum seeds matured, the crude fat level rose to 27 percent of seed dry weight”
Claim · model-written summary
Soluble nitrogen, soluble carbohydrates and magnesium in sweetgum seeds decreased during maturation.
- Taxon
- sweetgumLiquidambar styracifluae0
- Outcome
- soluble nitrogen, soluble carbohydrates, and magnesiume4
- Direction
- decreasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e4“During maturation, concentrations of soluble nitrogen, soluble carbohydrates, and magnesium decreased, while those of protein nitrogen and phosphorus increased”
Claim · model-written summary
Protein nitrogen and phosphorus in sweetgum seeds increased during maturation.
- Taxon
- sweetgumLiquidambar styracifluae0
- Outcome
- protein nitrogen and phosphoruse4
- Direction
- increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweetgum ( Liquidambar styraciflua L.) and sycamore ( Platanus occidentalis L.) fruits had nearly reached full-size by late June”
e4“During maturation, concentrations of soluble nitrogen, soluble carbohydrates, and magnesium decreased, while those of protein nitrogen and phosphorus increased”
Claim · model-written summary
Sycamore seeds became physiologically mature by early September.
Verbatim
e5“Sycamore seeds became physiologically mature by early September”
Claim · model-written summary
The major food reserves of sycamore seeds are carbohydrates and not fats.
Verbatim
e6“Chemical changes in sycamore were similar to those in sweetgum, except that the major food reserves were carbohydrates and not fats”