Abstract
The effect of foliar application of polyamines on roses (Rosa hybrida cv. 'Herbert Stevens') was investigated in a factorial experiment based on a completely randomized design with three replications in a greenhouse. Two factors were applied including polyamine type (putrescine, spermidine, and spermine) and polyamine concentration (0, 1, 2 and 4 mM). The recorded traits included root fresh and dry weight, root length, number of flowers, flower longevity, chlorophyll content, carotenoids, antioxidant enzymes activity (catalase, ascorbate peroxidase and guaiacol peroxidase) and some macronutrients such as nitrogen, phosphorus and potassium. The results showed that among polyamines, putrescine had the greatest effect on root dry weight; spermidine showed the greatest effect on root length, chlorophyll content, plant phosphorus and spermine affected root fresh weight and flower longevity most strongly. Polyamine concentration of 1 mM had the strongest effect on flower longevity, carotenoids, nitrogen and phosphorus content. The highest potassium rate was observed in treatments with the concentration of 4 mM. Polyamine treatments had no significant effect on the number of flowers per plant and antioxidant enzymes.
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Claims 9
Claim · model-written summary
Putrescine had the greatest effect on rose root dry weight.
- Taxon
- Rosa hybrida
Rosa hybrid cultivart0 - Treatment
- putrescinee0
- Outcome
- root dry weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“putrescine had the greatest effect on root dry weight”
t0“Rosa hybrida”
Claim · model-written summary
Spermidine had the greatest effect on rose root length.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- spermidinee0
- Outcome
- root lengthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermidine showed the greatest effect on root length, chlorophyll content, plant phosphorus”
t0“Rosa hybrida”
Claim · model-written summary
Spermidine had the greatest effect on rose chlorophyll content.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- spermidinee0
- Outcome
- chlorophyll contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermidine showed the greatest effect on root length, chlorophyll content, plant phosphorus”
t0“Rosa hybrida”
Claim · model-written summary
Spermidine had the greatest effect on rose phosphorus.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- spermidinee0
- Outcome
- plant phosphoruse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermidine showed the greatest effect on root length, chlorophyll content, plant phosphorus”
t0“Rosa hybrida”
Claim · model-written summary
Spermine most strongly affected rose root fresh weight.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- sperminee0
- Outcome
- root fresh weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermine affected root fresh weight and flower longevity most strongly”
t0“Rosa hybrida”
Claim · model-written summary
Spermine most strongly affected rose flower longevity.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- sperminee0
- Outcome
- flower longevitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermine affected root fresh weight and flower longevity most strongly”
t0“Rosa hybrida”
Claim · model-written summary
A 1 mM polyamine concentration had the strongest effect on flower longevity, carotenoids, nitrogen and phosphorus content.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- Polyamine concentration of 1 mMe0
- Outcome
- flower longevity, carotenoids, nitrogen and phosphorus contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Polyamine concentration of 1 mM had the strongest effect on flower longevity, carotenoids, nitrogen and phosphorus content.”
t0“Rosa hybrida”
Claim · model-written summary
The highest potassium rate occurred at 4 mM polyamine.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- concentration of 4 mMe0
- Outcome
- potassium ratee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest potassium rate was observed in treatments with the concentration of 4 mM.”
t0“Rosa hybrida”
Claim · model-written summary
Polyamines had no significant effect on flowers per plant or antioxidant enzymes.
- Taxon
- Rosa hybridaRosa hybrid cultivart0
- Treatment
- Polyamine treatmentse0
- Outcome
- number of flowers per plant and antioxidant enzymese0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Polyamine treatments had no significant effect on the number of flowers per plant and antioxidant enzymes.”
t0“Rosa hybrida”
The same questions in other papers
spermine · growth · Rosa hybrid cultivarPositive and negative results
1 in the opposite direction
- no effect
putrescine · growth · Rosa hybrid cultivarResults agree
1 paper in the same direction as this paper
- positive
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.