Abstract
In addition to flowers, cut foliage and leafy stems are very valuable florist material. However, florist greens frequently first loses its ornamental value in a flower arrangement, since it quickly wilts, fades, or browns. That is why it is important to develop agents for conditioning cut the florist greens that would extend its vase life effectively and inhibit senescence. Here we report on the effect of growth regulators and commercially available conditioning products on the post-harvest longevity of cut stems of Weigela florida 'Variegata Nana' and certain processes associated with their senescence. Senescence of W. florida cut stems resulted in reduced post-harvest quality, decrease in relative water content (RWC) and an increase in electrolyte leakage (EL) in the leaf tissues. Chrysal Clear 2, applied in the form of a 24-hour pre-treatment, was the most effective in extending the longevity of cut stems of W. florida. The same conditioning product also had a beneficial effect on leaf tissue water content and the values of the chlorophyll fluorescence parameters, including maximum quantum yield and actual photochemical activity. Conditioning of W. florida stems in a solution of gibberellic acid at a concentration of 0.25 mg · dm-3 had the most beneficial effect on the cytoplasmatic membranes. However, the highest contentes of photosynthetic pigments (chlorophyll “a” and “b”), were found after the 24-hour pre-treatment of W. florida stems in a solution of 0.1 mmol · dm-3 benzyladenine and Chrysal Clear 2.
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Claims 5
Claim · model-written summary
Senescence reduced cut stem quality and relative water content and increased electrolyte leakage.
- Taxon
- W. florida
Weigela floridae0 - Organ / stage
- leaf tissuese0
- Outcome
- post-harvest quality, decrease in relative water content (RWC) and an increase in electrolyte leakage (EL)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Senescence of W. florida cut stems resulted in reduced post-harvest quality, decrease in relative water content (RWC) and an increase in electrolyte leakage (EL) in the leaf tissues.”
Claim · model-written summary
Chrysal Clear 2 pretreatment was most effective for longevity.
- Taxon
- W. floridaWeigela floridae0
- Treatment
- Chrysal Clear 2, applied in the form of a 24-hour pre-treatmente0
- Outcome
- longevity of cut stemse0
- Direction
- extendinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chrysal Clear 2, applied in the form of a 24-hour pre-treatment, was the most effective in extending the longevity of cut stems of W. florida.”
Claim · model-written summary
Chrysal Clear 2 benefited leaf water content and chlorophyll fluorescence.
- Taxon
- Weigela floridaWeigela floridat0
- Treatment
- The same conditioning producte0
- Outcome
- leaf tissue water content and the values of the chlorophyll fluorescence parameterse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The same conditioning product also had a beneficial effect on leaf tissue water content and the values of the chlorophyll fluorescence parameters, including maximum quantum yield and actual photochemical activity.”
t0“Weigela florida”
Claim · model-written summary
Gibberellic acid conditioning benefited cytoplasmatic membranes most.
- Taxon
- W. floridaWeigela floridae0
- Treatment
- gibberellic acid at a concentration of 0.25 mg · dm-3e0
- Outcome
- cytoplasmatic membranese0
- Direction
- most beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conditioning of W. florida stems in a solution of gibberellic acid at a concentration of 0.25 mg · dm-3 had the most beneficial effect on the cytoplasmatic membranes.”
Claim · model-written summary
Benzyladenine and Chrysal Clear 2 pretreatment produced the highest photosynthetic pigment content.
- Taxon
- W. floridaWeigela floridae0
- Treatment
- 0.1 mmol · dm-3 benzyladenine and Chrysal Clear 2e0
- Outcome
- contentes of photosynthetic pigments (chlorophyll “a” and “b”)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest contentes of photosynthetic pigments (chlorophyll “a” and “b”), were found after the 24-hour pre-treatment of W. florida stems in a solution of 0.1 mmol · dm-3 benzyladenine and Chrysal Clear 2.”