Abstract
The accurate estimation of leaf photosynthetic pigments concentration is crucial to check the plant´s health. Traditional methods of measuring photosynthetic pigments involve complex procedures of solvent extraction followed by spectrophotometric determinations. Portable plant instruments such as Soil Plant Analysis Development (SPAD) meters can facilitate this task for the speed and simplicity of the measures. The relationship between chlorophyll index obtained by SPAD-502 and pigment concentration in several ornamental species can help in the management of ornamental plant production. Two trials have been carried out in two different growing seasons (spring and summer) and facilities (greenhouse and open air), involving 30 ornamental species. There was a high linear relationship between concentrations of Chla and Chlb, as well as between Chlt and Ct in different species studied under greenhouse and open field conditions. The ratio between Chla and Chlb was higher at open field conditions and similar between Chlt and Ct. There was also a good relationship between Chlorophyll index and Chlt under both growing conditions, as well as between Chlorophyll index and Ct under greenhouse conditions. However, linear relationships with different slopes were observed for groups of species at open field conditions.
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Claims 7
Claim · model-written summary
Chla and Chlb concentrations had a high linear relationship.
- Taxon
- Ornamental Plantst0
- Outcome
- concentrations of Chla and Chlbe0
- Setting
- greenhouse and open field conditionse0
Not reportedDirection
Verbatim
e0“There was a high linear relationship between concentrations of Chla and Chlb, as well as between Chlt and Ct in different species studied under greenhouse and open field conditions.”
t0“Ornamental Plants”
Claim · model-written summary
Chlt and Ct concentrations had a high linear relationship.
Not reportedDirection
Verbatim
e0“There was a high linear relationship between concentrations of Chla and Chlb, as well as between Chlt and Ct in different species studied under greenhouse and open field conditions.”
t0“Ornamental Plants”
Claim · model-written summary
The Chla-to-Chlb ratio was higher in open field conditions.
Verbatim
e0“The ratio between Chla and Chlb was higher at open field conditions”
t0“Ornamental Plants”
Claim · model-written summary
The Chlt-to-Ct ratio was similar between conditions.
Verbatim
e0“similar between Chlt and Ct”
t0“Ornamental Plants”
Claim · model-written summary
Chlorophyll index related well to Chlt under both growing conditions.
Not reportedDirection
Verbatim
e0“a good relationship between Chlorophyll index and Chlt under both growing conditions”
t0“Ornamental Plants”
Claim · model-written summary
Chlorophyll index related well to Ct under greenhouse conditions.
- Taxon
- Ornamental Plantst0
- Outcome
- Chlorophyll index and Cte0
- Comparator
- Cte0
- Setting
- greenhouse conditionse0
Not reportedDirection
Verbatim
e0“between Chlorophyll index and Ct under greenhouse conditions”
e1“There was also a good relationship”
t0“Ornamental Plants”
Claim · model-written summary
Species groups had different open-field slopes in the linear relationships.
- Taxon
- Ornamental Plantst0
- Outcome
- linear relationships with different slopese0
- Comparator
- groups of speciese0
- Setting
- open field conditionse0
Not reportedDirection
Verbatim
e0“linear relationships with different slopes were observed for groups of species at open field conditions.”
t0“Ornamental Plants”