Abstract
A greenhouse hydroponics culture experiment was carried out to study the effects of Mg and K interaction on plant growth, nutrient uptake, and related physiological characteristics of rice (Oryza sativa L. cv. Wuyunjing 7). The results show that with increasing K concentration of nutrient solution, dry plant weight reduces with low Mg concentration. This trend, however, reverses with higher Mg concentration. Uptake of Mg, K, N and P are remarkably restrained by higher K concentration with low Mg supply, while higher Mg concentration correspondingly enhances uptake of Mg, K, N and P. Leaf chlorophyll content decreases with increasing K concentration under low Mg condition. It is not significantly influenced by increasing K concentration when high concentration of Mg is supplied. With increasing Mg concentration, nitrate reductase (NR) activity and total soluble protein content increase, but not evidently enhanced with increased K concentration. Soluble sugar and starch contents of leaves are higher at high Mg concentration than at low Mg supply. Furthermore, soluble sugar and starch contents increase with increased K concentration. The study demonstrates that significant interaction between Mg and K restrains Mg uptake in low Mg with high K supply in rice.
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Claims 11
Claim · model-written summary
Increasing K reduced dry weight under low Mg.
- Taxon
- rice
Oryza sativat0 - Treatment
- increasing K concentration of nutrient solutione0
- Outcome
- dry plant weighte0
- Direction
- reducese0
- Qualifier
- low Mg concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“with increasing K concentration of nutrient solution, dry plant weight reduces with low Mg concentration”
Claim · model-written summary
Under higher Mg, increasing K increased dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- increasing K concentratione0
- Outcome
- dry plant weighte0
- Direction
- increaseinferrede0
- Qualifier
- higher Mg concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“with increasing K concentration of nutrient solution, dry plant weight reduces with low Mg concentration. This trend, however, reverses with higher Mg concentration”
Claim · model-written summary
Higher K restrained uptake of Mg, K, N, and P under low Mg.
- Taxon
- riceOryza sativat0
- Treatment
- higher K concentratione0
- Outcome
- Uptake of Mg, K, N and Pe0
- Direction
- restrainede0
- Qualifier
- low Mg supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Uptake of Mg, K, N and P are remarkably restrained by higher K concentration with low Mg supply”
Claim · model-written summary
Higher Mg enhanced uptake of Mg, K, N, and P.
- Taxon
- riceOryza sativat0
- Treatment
- higher Mg concentratione0
- Outcome
- uptake of Mg, K, N and Pe0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“higher Mg concentration correspondingly enhances uptake of Mg, K, N and P”
Claim · model-written summary
Increasing K reduced leaf chlorophyll under low Mg.
- Taxon
- riceOryza sativat0
- Treatment
- increasing K concentratione0
- Outcome
- Leaf chlorophyll contente0
- Direction
- decreasese0
- Qualifier
- low Mg conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Leaf chlorophyll content decreases with increasing K concentration under low Mg condition”
Claim · model-written summary
Increasing K did not significantly change chlorophyll at high Mg.
- Taxon
- riceOryza sativat0
- Treatment
- increasing K concentratione0
- Outcome
- Leaf chlorophyll contente0
- Qualifier
- high concentration of Mge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Leaf chlorophyll content decreases with increasing K concentration under low Mg condition. It is not significantly influenced by increasing K concentration when high concentration of Mg is supplied”
Claim · model-written summary
Increasing Mg increased nitrate reductase activity and soluble protein.
- Taxon
- riceOryza sativat0
- Treatment
- increasing Mg concentratione0
- Outcome
- nitrate reductase (NR) activity and total soluble protein contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“With increasing Mg concentration, nitrate reductase (NR) activity and total soluble protein content increase”
Claim · model-written summary
Increasing K did not evidently enhance nitrate reductase or soluble protein.
- Taxon
- riceOryza sativat0
- Treatment
- increased K concentratione0
- Outcome
- nitrate reductase (NR) activity and total soluble protein contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“With increasing Mg concentration, nitrate reductase (NR) activity and total soluble protein content increase, but not evidently enhanced with increased K concentration”
Claim · model-written summary
Leaf soluble sugar and starch were higher under high than low Mg.
- Taxon
- riceOryza sativat0
- Treatment
- high Mg concentratione0
- Outcome
- Soluble sugar and starch contents of leavese0
- Direction
- highere0
- Comparator
- low Mg supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Soluble sugar and starch contents of leaves are higher at high Mg concentration than at low Mg supply”
Claim · model-written summary
Increasing K increased soluble sugar and starch.
- Taxon
- riceOryza sativat0
- Treatment
- increased K concentratione0
- Outcome
- soluble sugar and starch contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“soluble sugar and starch contents increase with increased K concentration”
Claim · model-written summary
Mg and K interacted significantly to restrain Mg uptake under low Mg and high K.
- Taxon
- riceOryza sativae0
- Treatment
- low Mg with high K supplye0
- Outcome
- Mg uptakee0
- Direction
- restrainse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant interaction between Mg and K restrains Mg uptake in low Mg with high K supply in rice”
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