Abstract
Abstract Both at 5°C and 20°C the sucrose concentrations between 8–14 % appear to be optimal from the point of view of dry mass accumulation by the seedling. The metabolic efficiency was also the highest for these concentrations of sucrose. At both temperatures the hydration of the seedlings was strongly dependent on sucrose concentration in the nutrient, diminishing, respectively, from about 6 to about 2 and from about 10 to about 2 mg H 2 O × mg DW −1 Such low values of the seedling hydration, however, caused only a 10–20 % decrease of their dry weight. Within the range of the applied sucrose concentration (2–20 %) its beneficial – trophic interaction prevails over the negative – osmotic interaction. At 5°C, as compared with 20°C, a drop in the seedlings hydration was observed, which appears to be the general response of plants to low temperature of growth. An analysis of the 24‐hour respiration rate of the seedlings when grown at 5°C seems to reveal the occurrence of a process requiring additional metabolic energy and, probably, associated with the vernalization process. A method of leveling the temperature dependent hydration of the seedling is proposed to enable the selection of high‐temperature control in the investigations of the biochemical mechanism of frost hardening and vernalization.
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Claims 6
Claim · model-written summary
At 5°C and 20°C, 8–14 % sucrose was optimal for seedling dry mass accumulation.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Treatment
- sucrose concentrations between 8–14 %e0
- Outcome
- dry mass accumulatione0
- Direction
- optimale0
- Value
- 8–14 %e0
- Qualifier
- Both at 5°C and 20°Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both at 5°C and 20°C the sucrose concentrations between 8–14 % appear to be optimal from the point of view of dry mass accumulation by the seedling”
t0“Winter Wheat”
Claim · model-written summary
Metabolic efficiency was highest at 8–14 % sucrose.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- sucrose concentrations between 8–14 %e1
- Outcome
- metabolic efficiencye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The metabolic efficiency was also the highest for these concentrations of sucrose”
e1“sucrose concentrations between 8–14 %”
t0“Winter Wheat”
Claim · model-written summary
Seedling hydration diminished with increasing sucrose concentration at both temperatures.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- sucrose concentratione0
- Outcome
- hydration of the seedlingse0
- Direction
- diminishinge0
- Value
- about 6 to about 2 and from about 10 to about 2 mg H 2 O × mg DW −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At both temperatures the hydration of the seedlings was strongly dependent on sucrose concentration in the nutrient, diminishing, respectively, from about 6 to about 2 and from about 10 to about 2 mg H 2 O × mg DW −1”
t0“Winter Wheat”
Claim · model-written summary
Low seedling hydration caused only a 10–20 % dry-weight decrease.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- seedlinge0
- Outcome
- dry weighte0
- Direction
- decreasee0
- Value
- 10–20 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such low values of the seedling hydration, however, caused only a 10–20 % decrease of their dry weight”
t0“Winter Wheat”
Claim · model-written summary
Seedling hydration was lower at 5°C than at 20°C.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- 5°Ce0
- Outcome
- seedlings hydratione0
- Direction
- drope0
- Comparator
- 20°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 5°C, as compared with 20°C, a drop in the seedlings hydration was observed”
t0“Winter Wheat”
Claim · model-written summary
Respiration at 5°C suggested an additional energy-demanding process possibly linked to vernalization.
- Taxon
- Winter WheatTriticum aestivumt0
- Outcome
- 24‐hour respiration ratee0
- Qualifier
- process requiring additional metabolic energy and, probably, associated with the vernalization processe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An analysis of the 24‐hour respiration rate of the seedlings when grown at 5°C seems to reveal the occurrence of a process requiring additional metabolic energy and, probably, associated with the vernalization process”
t0“Winter Wheat”
The same questions in other papers
sucrose · growth · Triticum aestivum (wheat)Positive and negative results
8 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
12 papers more in this group
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.