Abstract
SummaryThe effect of growing spinach at two light intensities on the content of oxalate, ascorbate and nitrate in their leaves was determined. Plants were grown for five weeks in a growth cabinet under a 10 h light/14 h dark photoperiod and a photon flux density of either 800 or 200 µmol quanta m–2 s–1. The content of oxalate, ascorbate and nitrate in the fourth and fifth fully expanded true leaves was then determined at three times during the photoperiod. Spinach plants grown at the lower light intensity showed decreased growth, a decreased leaf area per plant and an increased shoot to root ratio. Leaves from plants grown under low light contained less ascorbate but more oxalate and nitrate. Our data show that the nutritional quality of spinach is thereby decreased by growth in low light intensities and suggest that the content of oxalic acid in leaves may depend on the rate of its catabolism.
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Claims 5
Claim · model-written summary
Low light decreased spinach growth.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- the lower light intensitye0
- Outcome
- growthe0
- Direction
- decreasede0
Not reportedOrgan / stageComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spinach plants grown at the lower light intensity showed decreased growth, a decreased leaf area per plant and an increased shoot to root ratio.”
Claim · model-written summary
Low light decreased spinach leaf area per plant.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- the lower light intensitye0
- Outcome
- leaf area per plante0
- Direction
- decreasede0
Not reportedOrgan / stageComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spinach plants grown at the lower light intensity showed decreased growth, a decreased leaf area per plant and an increased shoot to root ratio.”
Claim · model-written summary
Low light increased spinach shoot to root ratio.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- the lower light intensitye0
- Outcome
- shoot to root ratioe0
- Direction
- increasede0
Not reportedOrgan / stageComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spinach plants grown at the lower light intensity showed decreased growth, a decreased leaf area per plant and an increased shoot to root ratio.”
Claim · model-written summary
Low light reduced leaf ascorbate.
- Taxon
- spinachSpinacia oleraceat0
- Organ / stage
- Leavese0
- Treatment
- low lighte0
- Outcome
- ascorbatee0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves from plants grown under low light contained less ascorbate but more oxalate and nitrate.”
t0“spinach”
Claim · model-written summary
Low light increased leaf oxalate and nitrate.
- Taxon
- spinachSpinacia oleraceat0
- Organ / stage
- Leavese0
- Treatment
- low lighte0
- Outcome
- oxalate and nitratee0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves from plants grown under low light contained less ascorbate but more oxalate and nitrate.”
t0“spinach”
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