Abstract
The aim of the present investigations was to determine the cumulative effect of foliar treatment of lettuce plants with a CaCl2 solution and the cold-storage period on the level of chlorophylls in the leaves of lettuce cv. ،Omega٫ (Lactuca sativa L.). Plants were grown in a pot experiment conducted in the greenhouse of the Department of Cultivation and Fertilisation of Horticultural Plants, University of Life Sciences in Lublin. During the growing period, 10 and 20 days before harvest, the plants received foliar application of CaCl2 at the concentrations of 0.1 M and 0.2 M. Control plants were sprayed with water. Some plants were analysed immediately after the harvest; other specimens were cold-stored at a temperature of 4oC for 7 and 14 days. Whole leaves and blades without the midrib were analysed. The results obtained indicated that the foliar application of 0.2M CaCl2 in lettuce resulted in a decrease in the level of chlorophylls in fresh plants, compared with the control. A beneficial cumulative effect of the CaCl2 application and storage period on the chlorophyll level in lettuce leaves was observed in the leaf blades of plants after foliar treatment with the 0.1M CaCl2.solution and cold-stored for 7 and 14 days, in which in- creased levels of chlorophyll “a” and “b” and total chlorophyll, compared with the control, were found.
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Claims 2
Claim · model-written summary
Foliar application of 0.2M CaCl2 decreased the level of chlorophylls in fresh lettuce compared with the control.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- foliar application of 0.2M CaCl2e1
- Outcome
- level of chlorophyllse1
- Direction
- decreasee1
- Qualifier
- fresh plantse1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the foliar application of 0.2M CaCl2 in lettuce resulted in a decrease in the level of chlorophylls in fresh plants, compared with the control”
Claim · model-written summary
In leaf blades of lettuce sprayed with 0.1M CaCl2 and cold-stored for 7 and 14 days, chlorophyll a, b and total chlorophyll were increased compared with the control.
- Taxon
- lettuceLactuca sativat0
- Organ / stage
- leaf bladese1
- Treatment
- foliar treatment with the 0.1M CaCl2.solutione1
- Outcome
- levels of chlorophyll “a” and “b” and total chlorophylle1
- Direction
- increaseinferrede1
- Qualifier
- cold-stored for 7 and 14 dayse1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“lettuce”
e1“in the leaf blades of plants after foliar treatment with the 0.1M CaCl2.solution and cold-stored for 7 and 14 days, in which in- creased levels of chlorophyll “a” and “b” and total chlorophyll, compared with the control, were found”
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