Abstract
Overusing chemical fertilizers involves potassium accumulation in the soil, which can become a toxicity problem in agriculture. This study was conducted to investigate the effect of potassium (K) treatment on growth, physiological characteristics, and morphological changes using Chinese cabbage (Brassica rapa L. ssp. campestris). With high (600 mM) K treatment, the plant growth traits of leaf length, leaf area, and fresh and dry weight of shoots and roots decreased, whereas chlorophyll content increased. As the concentration of K increasing, total N, P, and K increased in leaves, but concentrations of Ca, Mg, and Na decreased. However, Mn, Fe and Zn contents were highest in 100 mM K treatment. Chlorophyll a, b, and carotenoids increased with increasing K concentration. Maximum photochemical efficiency (F v /F m ) was not significant in the all treatments, whereas CO₂ assimilation decreased with increasing K level due to stomatal degradation. Total free amino acids increased with the 10 and 100 mM K but decreased at 600 mM K treatments. Therefore, the growth and physiological characteristics of Chinese cabbage ascertained that tolerance up to 100 mM K when grown with nutrient solution in pot culture.
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Claims 12
Claim · model-written summary
At 600 mM potassium, leaf length and area declined.
- Taxon
- Chinese Cabbage
Brassica rapa subsp. pekinensist0 - Treatment
- 600 mM) K treatmente0
- Outcome
- leaf length, leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“With high (600 mM) K treatment, the plant growth traits of leaf length, leaf area, and fresh and dry weight of shoots and roots decreased”
Claim · model-written summary
At 600 mM potassium, fresh and dry weight of shoots and roots declined.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- 600 mM) K treatmente0
- Outcome
- fresh and dry weight of shoots and rootse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“With high (600 mM) K treatment, the plant growth traits of leaf length, leaf area, and fresh and dry weight of shoots and roots decreased”
Claim · model-written summary
High potassium increased chlorophyll content.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Outcome
- chlorophyll contente0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“whereas chlorophyll content increased”
Claim · model-written summary
Increasing potassium raised leaf N, P and K.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- leavese0
- Treatment
- concentration of Ke0
- Outcome
- total N, P, and Ke0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“As the concentration of K increasing, total N, P, and K increased in leaves”
Claim · model-written summary
Increasing potassium lowered leaf Ca, Mg and Na.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Outcome
- concentrations of Ca, Mg, and Nae0
- Direction
- decreasede0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“but concentrations of Ca, Mg, and Na decreased”
Claim · model-written summary
Mn, Fe and Zn contents peaked at 100 mM potassium.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- 100 mM K treatmente0
- Outcome
- Mn, Fe and Zn contentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“Mn, Fe and Zn contents were highest in 100 mM K treatment”
Claim · model-written summary
Chlorophyll a, b and carotenoids increased with potassium concentration.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- K concentratione0
- Outcome
- Chlorophyll a, b, and carotenoidse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“Chlorophyll a, b, and carotenoids increased with increasing K concentration”
Claim · model-written summary
Maximum photochemical efficiency was not significantly different across treatments.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- all treatmentse0
- Outcome
- Maximum photochemical efficiency (F v /F m )e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“Maximum photochemical efficiency (F v /F m ) was not significant in the all treatments”
Claim · model-written summary
CO₂ assimilation declined as potassium increased.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- K levele0
- Outcome
- CO₂ assimilatione0
- Direction
- decreasede0
- Qualifier
- stomatal degradatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“CO₂ assimilation decreased with increasing K level due to stomatal degradation”
Claim · model-written summary
Free amino acids increased at 10 and 100 mM potassium.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- 10 and 100 mM Ke0
- Outcome
- Total free amino acidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“Total free amino acids increased with the 10 and 100 mM K”
Claim · model-written summary
Free amino acids declined at 600 mM potassium.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Treatment
- 600 mM K treatmentse0
- Outcome
- Total free amino acidse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“Total free amino acids increased with the 10 and 100 mM K but decreased at 600 mM K treatments”
Claim · model-written summary
Authors infer tolerance up to 100 mM potassium in pot culture.
- Taxon
- Chinese CabbageBrassica rapa subsp. pekinensist0
- Outcome
- tolerance up to 100 mM Ke0
- Setting
- pot culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chinese Cabbage”
e0“tolerance up to 100 mM K when grown with nutrient solution in pot culture”
The same questions in other papers
potassium · growth · Brassica rapa (field mustard)Results differ
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →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.