Abstract
The role of sucrose alone and in combination with different cytokinin-like compounds on the microtuberization of potato, Solanum tuberosum `Atlantic', was investigated. Single nodal segments were placed in Magenta boxes containing Murashige & Skoog medium supplemented with one of 15 treatments in a 3 × 5 factorial. Treatment factors were sucrose at 3%, 6%, or 9%, and cytokinin-like compounds at five levels [cytokinin-free; 2 mg kinetin/L; 0.1 mg thidiazuron (TDZ)/L; 1.0 mg AC 243,654/L; 0.1 mg AC 239,604/L]. Except in a few cases in kinetin and TDZ treatments, nearly all cytokinin treatments failed to induce tuberization at the 3% sucrose, noninductive level. However, all cytokinin treatments induced tuberization in the presence of 6% sucrose. By raising the sucrose level from 6% to 9%, more and larger microtubers were obtained in the cytokinin-free medium. At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments, less total fresh weight of tubers per box resulted from kinetin, TDZ and AC 243,654 treatments because tubers formed were smaller. Higher sucrose concentrations (9%) favored tuberization in the cytokinin-free medium, whereas 6% sucrose was optimum for the medium containing cytokinins. Sucrose might produce a strong tuberization signal that might either change endogenous hormone levels affecting tuberization or activate a number of genes coding tuber proteins and enzymes related to starch synthesis.
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Claims 12
Claim · model-written summary
At 3% sucrose, nearly all cytokinin treatments failed to induce tuberization, with a few kinetin and TDZ exceptions.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- cytokinin treatmentse0
- Outcome
- failed to induce tuberizatione0
- Qualifier
- 3% sucrosee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except in a few cases in kinetin and TDZ treatments, nearly all cytokinin treatments failed to induce tuberization at the 3% sucrose, noninductive level.”
t0“Potato”
Claim · model-written summary
At 6% sucrose, all cytokinin treatments induced tuberization.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- cytokinin treatmentse0
- Outcome
- induced tuberizatione0
- Qualifier
- 6% sucrosee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all cytokinin treatments induced tuberization in the presence of 6% sucrose”
t0“Potato”
Claim · model-written summary
Increasing sucrose from 6% to 9% produced more microtubers in cytokinin-free medium.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 9%e0
- Outcome
- microtuberse0
- Direction
- moree0
- Qualifier
- cytokinin-free mediume0
- Comparator
- 6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By raising the sucrose level from 6% to 9%, more and larger microtubers were obtained in the cytokinin-free medium.”
t0“Potato”
Claim · model-written summary
Increasing sucrose from 6% to 9% produced larger microtubers in cytokinin-free medium.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 9%e0
- Outcome
- microtuberse0
- Direction
- largere0
- Qualifier
- cytokinin-free mediume0
- Comparator
- 6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By raising the sucrose level from 6% to 9%, more and larger microtubers were obtained in the cytokinin-free medium.”
t0“Potato”
Claim · model-written summary
At 9% sucrose, TDZ produced more tubers per box.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- TDZe0
- Outcome
- tubers per boxe0
- Direction
- moree0
- Qualifier
- 9% sucrosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments”
t0“Potato”
Claim · model-written summary
At 9% sucrose, AC 243,654 produced more tubers per box.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- AC 243,654e0
- Outcome
- tubers per boxe0
- Direction
- moree0
- Qualifier
- 9% sucrosee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments”
t0“Potato”
Claim · model-written summary
At 9% sucrose, kinetin reduced total tuber fresh weight per box because tubers were smaller.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- kinetine0
- Outcome
- total fresh weight of tubers per boxe0
- Direction
- lesse0
- Qualifier
- 9% sucrose levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments, less total fresh weight of tubers per box resulted from kinetin, TDZ and AC 243,654 treatments because tubers formed were smaller.”
t0“Potato”
Claim · model-written summary
At 9% sucrose, TDZ reduced total tuber fresh weight per box because tubers were smaller.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- TDZe0
- Outcome
- total fresh weight of tubers per boxe0
- Direction
- lesse0
- Qualifier
- 9% sucrose levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments, less total fresh weight of tubers per box resulted from kinetin, TDZ and AC 243,654 treatments because tubers formed were smaller.”
t0“Potato”
Claim · model-written summary
At 9% sucrose, AC 243,654 reduced total tuber fresh weight per box because tubers were smaller.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- AC 243,654e0
- Outcome
- total fresh weight of tubers per boxe0
- Direction
- lesse0
- Qualifier
- 9% sucrose levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 9% sucrose level, even though more tubers per box were produced by TDZ and AC 243,654 treatments, less total fresh weight of tubers per box resulted from kinetin, TDZ and AC 243,654 treatments because tubers formed were smaller.”
t0“Potato”
Claim · model-written summary
Nine percent sucrose favored tuberization in cytokinin-free medium.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 9%e0
- Outcome
- tuberizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher sucrose concentrations (9%) favored tuberization in the cytokinin-free medium”
t0“Potato”
Claim · model-written summary
Six percent sucrose was optimal for tuberization in cytokinin-containing medium.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 6% sucrosee0
- Outcome
- optimume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6% sucrose was optimum for the medium containing cytokinins”
t0“Potato”
Claim · model-written summary
Sucrose might signal tuberization by altering endogenous hormone levels or activating starch-related genes.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Sucrosee0
- Outcome
- tuberization signale0
- Qualifier
- might either change endogenous hormone levels affecting tuberization or activate a number of genes coding tuber proteins and enzymes related to starch synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose might produce a strong tuberization signal that might either change endogenous hormone levels affecting tuberization or activate a number of genes coding tuber proteins and enzymes related to starch synthesis.”
t0“Potato”
The same questions in other papers
kinetin · yield · Solanum tuberosum (potato)Results differ
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Thidiazuron · yield · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- negative
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.