Abstract
Summary The culture yield of a simple method of microtuber production of potato was increased by assessing the interactions of illumination source (Thorn Lighting (Philips) “Colour 84” lamps (TL‐84) or Grolux lamps (Sylvania) in a conventional growth room or natural light in a glasshouse cabinet), type of vessel closure (unventilated or ventilated) and sucrose concentration (1%, 2%, 4% or 8%). Microtuber initiation and growth in unventilated cultures was 100% at 8% sucrose falling to 40–50% at 4% sucrose and was absent at 1% or 2%. With ventilation, rapid tuberisation (90–100%) occurred at initial sucrose concentrations of 2–8%, but only when the medium was allowed to dry before transfer of cultures to short days. Water supplementation of cultures at day 28 prevented tuberisation at 1–4% sucrose up to day 56. The fresh weight and dry weight of microtubers per plant increased significantly with sucrose concentration, with ventilation of cultures and under natural light. In ventilated cultures, the mean number of usable microtubers (± 0.1 g weight) increased from between 1.0–1.4 per plant at 8% sucrose to between 1.6–2.6 per plant at 4% sucrose, with the highest numbers (1.8–2.6 per plant) produced under natural light for the cvs Desirée and King Edward. The mean % dry matter content of microtubers was reduced to 11.3% at 4% sucrose compared with 17.3% at 8% sucrose, but the survival rate of microtubers after 6 months storage was unaffected. Microtuber production under short days was improved at a higher intensity of natural light with culture ventilation in a partially‐shaded glasshouse cabinet, whilst using reduced inputs (lower sucrose supply and no lamps).
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Claims 13
Claim · model-written summary
Unventilated cultures at 8% sucrose reached 100% microtuber initiation and growth.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- 8% sucrosee0
- Outcome
- Microtuber initiation and growthe0
- Value
- 100%e0
- Setting
- unventilated culturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microtuber initiation and growth in unventilated cultures was 100% at 8% sucrose”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Unventilated cultures at 4% sucrose reached 40–50% initiation and growth.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 4% sucrosee0
- Outcome
- Microtuber initiation and growthe1
- Value
- 40–50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“falling to 40–50% at 4% sucrose”
e1“Microtuber initiation and growth”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Microtuber initiation and growth were absent at 1% sucrose in unventilated cultures.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 1%e0
- Outcome
- Microtuber initiation and growthe1
- Direction
- absente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was absent at 1% or 2%.”
e1“Microtuber initiation and growth”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Microtuber initiation and growth were absent at 2% sucrose in unventilated cultures.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 2%e0
- Outcome
- Microtuber initiation and growthe1
- Direction
- absente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was absent at 1% or 2%.”
e1“Microtuber initiation and growth”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Ventilation and medium drying enabled 90–100% rapid tuberization at 2–8% sucrose.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- ventilatione0
- Outcome
- rapid tuberisatione0
- Direction
- rapide0
- Value
- 90–100%e0
- Qualifier
- only when the medium was allowed to dry before transfer of cultures to short dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With ventilation, rapid tuberisation (90–100%) occurred at initial sucrose concentrations of 2–8%, but only when the medium was allowed to dry before transfer of cultures to short days.”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Water supplementation at day 28 prevented tuberization at 1–4% sucrose through day 56.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Water supplementation of cultures at day 28e0
- Outcome
- tuberisatione0
- Direction
- preventede0
- Qualifier
- at 1–4% sucrose up to day 56e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water supplementation of cultures at day 28 prevented tuberisation at 1–4% sucrose up to day 56.”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Microtuber fresh and dry weight per plant increased significantly with sucrose concentration.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- sucrose concentratione0
- Outcome
- fresh weight and dry weight of microtubers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight and dry weight of microtubers per plant increased significantly with sucrose concentration”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Microtuber fresh and dry weight increased significantly with ventilation.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- ventilation of culturese0
- Outcome
- fresh weight and dry weight of microtubers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight and dry weight of microtubers per plant increased significantly with sucrose concentration, with ventilation of cultures and under natural light.”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Microtuber fresh and dry weight increased significantly under natural light.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- natural lighte0
- Outcome
- fresh weight and dry weight of microtubers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight and dry weight of microtubers per plant increased significantly with sucrose concentration, with ventilation of cultures and under natural light.”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Usable microtubers increased from 1.0–1.4 per plant at 8% sucrose to 1.6–2.6 at 4%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 4% sucrosee0
- Outcome
- mean number of usable microtuberse0
- Direction
- increasede0
- Value
- 1.6–2.6 per plante0
- Qualifier
- 1.0–1.4 per plante0
- Comparator
- 8% sucrosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mean number of usable microtubers (± 0.1 g weight) increased from between 1.0–1.4 per plant at 8% sucrose to between 1.6–2.6 per plant at 4% sucrose”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Natural light gave the highest usable microtuber numbers for Desirée and King Edward.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Desirée and King Edwarde0
- Treatment
- natural lighte0
- Outcome
- highest numberse0
- Direction
- higheste0
- Value
- 1.8–2.6 per plante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest numbers (1.8–2.6 per plant) produced under natural light for the cvs Desirée and King Edward.”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
At 4% versus 8% sucrose, microtuber dry matter declined to 11.3% from 17.3%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 4% sucrosee0
- Outcome
- mean % dry matter content of microtuberse0
- Direction
- reducede0
- Value
- 11.3%e0
- Qualifier
- 17.3%e0
- Comparator
- 8% sucrosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean % dry matter content of microtubers was reduced to 11.3% at 4% sucrose compared with 17.3% at 8% sucrose”
t0“potato (Solanum tuberosum)”
Claim · model-written summary
Sucrose level did not affect microtuber survival after six months of storage.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 4% sucrosee1
- Outcome
- survival rate of microtuberse0
- Direction
- unaffectede0
- Comparator
- 8% sucrosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the survival rate of microtubers after 6 months storage was unaffected.”
e1“4% sucrose compared with 17.3% at 8% sucrose”
t0“potato (Solanum tuberosum)”
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See all 53 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.