Abstract
The effect of Al on the growth of excised tea (Camellia sinensis L.) roots differentiated from stem segments in vitro was investigated in shaking liquid culture.1) The optimum initial pH for tea root growth in modified MS medium was 5.5.Growth of main and lateral roots was affected by the difference in N AA concentrations.Main root growth was stimulated by 5X10-7 and 1X10-6 M N AA, and lateral root growth was stimulated by 5 X 10-6 and 1 X 10-5 M N AA.2) Main root growth showed a progressive increase for 3 weeks, then became stationary.Lateral roots began to grow at 2 weeks, with a progressive increase over the following 6 weeks.3) The growth of the tea roots in the main or lateral root growth medium was stimulated by the supply of Al and P together, but was not affected when Al and P were supplied separately.4) The pH of the culture medium decreased gradually to about 4.0 during the shaking culture, and remained stable.Growth of roots supplied with Al was stimulated after the decrease of medium pH, but when the Al supply ceased, growth stopped.
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Claims 10
Claim · model-written summary
Tea root growth was optimal at initial pH 5.5.
Verbatim
e0“The optimum initial pH for tea root growth in modified MS medium was 5.5.”
Claim · model-written summary
Main root growth was stimulated by 5X10-7 and 1X10-6 M N AA.
- Taxon
- teat0
- Organ / stage
- Main roote0
- Treatment
- 5X10-7 and 1X10-6 M N AAe0
- Outcome
- Main root growthe0
- Direction
- stimulatede0
Not reportedComparator
Verbatim
e0“Main root growth was stimulated by 5X10-7 and 1X10-6 M N AA”
t0“tea”
Claim · model-written summary
Lateral root growth was stimulated by 5 X 10-6 and 1 X 10-5 M N AA.
- Taxon
- teat0
- Organ / stage
- lateral roote0
- Treatment
- 5 X 10-6 and 1 X 10-5 M N AAe0
- Outcome
- lateral root growthe0
- Direction
- stimulatede0
Not reportedComparator
Verbatim
e0“lateral root growth was stimulated by 5 X 10-6 and 1 X 10-5 M N AA”
t0“tea”
Claim · model-written summary
Main root growth rose for three weeks and then became stationary.
Verbatim
e0“Main root growth showed a progressive increase for 3 weeks, then became stationary.”
t0“tea”
Claim · model-written summary
Lateral roots began growing at two weeks and increased over the following six weeks.
Verbatim
e0“Lateral roots began to grow at 2 weeks, with a progressive increase over the following 6 weeks.”
t0“tea”
Claim · model-written summary
Al and P together stimulated tea root growth.
Verbatim
e0“The growth of the tea roots in the main or lateral root growth medium was stimulated by the supply of Al and P together, but was not affected when Al and P were supplied separately.”
Claim · model-written summary
Al and P supplied separately did not affect tea root growth.
- Taxon
- teae0
- Treatment
- Al and P were supplied separatelye0
- Outcome
- growth of the tea rootse0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“The growth of the tea roots in the main or lateral root growth medium was stimulated by the supply of Al and P together, but was not affected when Al and P were supplied separately.”
Claim · model-written summary
Culture medium pH fell to about 4.0 and stabilized.
Verbatim
e0“The pH of the culture medium decreased gradually to about 4.0 during the shaking culture, and remained stable.”
t0“tea”
Claim · model-written summary
Tea roots supplied with Al grew more after medium pH fell.
- Taxon
- teat0
- Treatment
- Ale0
- Outcome
- Growth of rootse0
- Direction
- stimulatede0
- Qualifier
- after the decrease of medium pHe0
Not reportedComparator
Verbatim
e0“Growth of roots supplied with Al was stimulated after the decrease of medium pH”
t0“tea”
Claim · model-written summary
Root growth stopped when Al supply ceased.
Not reportedComparator
Verbatim
e0“when the Al supply ceased, growth stopped”
t0“tea”
The same questions in other papers
aluminium atom · growth · Camellia sinensis (black tea)Results differ
13 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
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See all 16 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.