Abstract
Abstract Cabbage plants were grown at graded levels of nitrate nitrogen (20 and 100 ppm N) and temperature (15, 20, and 25°C), and the effects of these treatments on cabbage-head development were investigated. The total plant dry weight and the cabbage-head yield were always higher at 100 ppm N than at 20 ppm N, and at each N level the values were in the order of 20>15>25°C. The nitrogen content in the outer leaves was higher at 100 ppm N than at 20 ppm N, and increased slightly with increase in temperature. The total sugar content was higher in the inner head leaves than in the outer leaves, and was decreased greatly at 25°c in both organs. The 14CO2 assimilation of the outer leaves was larger at 100 ppm N than at 20 ppm N. After 14CO2 assimilation by the plants, a greater amount of uc was lost by respiration at 25°c than at 15 and 20°C, resulting in a low distribution of 14c-sugars in the inner head leaves. The highest yield and a better quality of cabbage-heads were obtained when the plants were grown at 20°C with a high N supply and the outer leaves had a carbohydrate/nitrogen content ratio of about 7.
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Claims 11
Claim · model-written summary
Total dry weight was higher at 100 than 20 ppm N and ranked 20, 15, then 25°C.
- Taxon
- Cabbage
Brassica oleracea var. capitatat0 - Treatment
- 100 ppm Ne0
- Outcome
- total plant dry weighte0
- Direction
- highere0
- Qualifier
- 20>15>25°Ce0
- Comparator
- 20 ppm Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total plant dry weight and the cabbage-head yield were always higher at 100 ppm N than at 20 ppm N, and at each N level the values were in the order of 20>15>25°C”
t0“Cabbage”
Claim · model-written summary
Head yield was higher at 100 than 20 ppm N and ranked 20, 15, then 25°C.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 100 ppm Ne0
- Outcome
- cabbage-head yielde0
- Direction
- highere0
- Qualifier
- 20>15>25°Ce0
- Comparator
- 20 ppm Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total plant dry weight and the cabbage-head yield were always higher at 100 ppm N than at 20 ppm N, and at each N level the values were in the order of 20>15>25°C”
t0“Cabbage”
Claim · model-written summary
Outer-leaf nitrogen was higher at 100 ppm N and rose slightly with temperature.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 100 ppm Ne0
- Outcome
- nitrogen content in the outer leavese0
- Direction
- highere0
- Comparator
- 20 ppm Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrogen content in the outer leaves was higher at 100 ppm N than at 20 ppm N, and increased slightly with increase in temperature”
t0“Cabbage”
Claim · model-written summary
Outer-leaf nitrogen content increased slightly with temperature.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- temperaturee0
- Outcome
- nitrogen contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrogen content in the outer leaves was higher at 100 ppm N than at 20 ppm N, and increased slightly with increase in temperature”
t0“Cabbage”
Claim · model-written summary
Total sugar content was higher in inner head leaves than outer leaves.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Organ / stage
- inner head leavese0
- Outcome
- total sugar contente0
- Direction
- highere0
- Comparator
- outer leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total sugar content was higher in the inner head leaves than in the outer leaves”
t0“Cabbage”
Claim · model-written summary
At 25°C, total sugar content greatly decreased in both leaf organs.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 25°ce0
- Outcome
- total sugar contente0
- Direction
- decreasede0
- Qualifier
- both organse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total sugar content was higher in the inner head leaves than in the outer leaves, and was decreased greatly at 25°c in both organs”
t0“Cabbage”
Claim · model-written summary
Outer-leaf 14CO2 assimilation was larger at 100 than 20 ppm N.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Organ / stage
- outer leavese0
- Treatment
- 100 ppm Ne0
- Outcome
- 14CO2 assimilatione0
- Direction
- largere0
- Comparator
- 20 ppm Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 14CO2 assimilation of the outer leaves was larger at 100 ppm N than at 20 ppm N”
t0“Cabbage”
Claim · model-written summary
Respiratory loss of carbon was greater at 25°C than at 15 and 20°C.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 25°ce0
- Outcome
- amount of uc was lost by respiratione0
- Direction
- greatere0
- Comparator
- 15 and 20°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a greater amount of uc was lost by respiration at 25°c than at 15 and 20°C”
t0“Cabbage”
Claim · model-written summary
Higher respiratory loss at 25°C resulted in low 14c-sugar distribution in inner head leaves.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Outcome
- distribution of 14c-sugars in the inner head leavese0
- Qualifier
- respiratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a greater amount of uc was lost by respiration at 25°c than at 15 and 20°C, resulting in a low distribution of 14c-sugars in the inner head leaves”
t0“Cabbage”
Claim · model-written summary
Highest head yield occurred at 20°C with high N supply.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 20°C with a high N supplye0
- Outcome
- yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield and a better quality of cabbage-heads were obtained when the plants were grown at 20°C with a high N supply”
t0“Cabbage”
Claim · model-written summary
Better head quality occurred at 20°C with high N supply and an outer-leaf carbohydrate to nitrogen ratio near 7.
- Taxon
- CabbageBrassica oleracea var. capitatat0
- Treatment
- 20°C with a high N supplye0
- Outcome
- quality of cabbage-headse0
- Direction
- bettere0
- Qualifier
- carbohydrate/nitrogen content ratio of about 7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield and a better quality of cabbage-heads were obtained when the plants were grown at 20°C with a high N supply and the outer leaves had a carbohydrate/nitrogen content ratio of about 7”
t0“Cabbage”
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