Abstract
Chlorophyll is a significant biochemical component and can be determined in the laboratory (destructive) and using various chlorophyll content measuring devices (non-destructive). In this study, destructive and non-destructive methods were used to determine chlorophyll content and compared in peanut (Arachis hypogaea cv. NC-7) grown under different soil texture and saline water applications. The experiment was carried out in a complete randomized block design in pots using two soil textures (clay-loam and sandy) and three irrigation water salinity (0.7, 2.1 and 3.3 dS m-1). While the chlorophyll contents (Chl-a , Chl-b, Chl-a+b, Chl-a/b) were determined with the acetone extraction procedure, which is classified as destructive methods under laboratory conditions, the Chlorophyll Content Index (CCI) values were measured with the hand-held chlorophyll meter device (Apogee CCM-200), which is a non-destructive method. While irrigation water salinity decreased all types of chlorophyll contents (Chl-a, Chl-b, Chl-a+b) (mg cm-2), it did not cause a statistical difference in Chl-a/b. Linear and polynomial models were fitted between the different chlorophyll contents and the CCI values under different soil textures and saline water levels. Model performances were slightly better with the polynomial model compared to the linear model in all experimental treatments. Since the difference between model performances is small, it is recommended to use the linear model due to its ease of use. In addition, the total chlorophyll content can be safely estimated under saline conditions by using portable chlorophyll meters.
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Claims 5
Claim · model-written summary
Irrigation water salinity decreased peanut Chl-a, Chl-b and Chl-a+b content.
- Taxon
- peanuts
Arachis hypogaeat0 - Treatment
- irrigation water salinitye0
- Outcome
- chlorophyll contents (Chl-a, Chl-b, Chl-a+b)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While irrigation water salinity decreased all types of chlorophyll contents (Chl-a, Chl-b, Chl-a+b) (mg cm-2), it did not cause a statistical difference in Chl-a/b.”
t0“peanuts”
Claim · model-written summary
Irrigation water salinity showed no statistical difference in peanut Chl-a/b.
- Taxon
- peanutsArachis hypogaeat0
- Treatment
- irrigation water salinitye0
- Outcome
- Chl-a/be0
- Direction
- did not cause a statistical differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While irrigation water salinity decreased all types of chlorophyll contents (Chl-a, Chl-b, Chl-a+b) (mg cm-2), it did not cause a statistical difference in Chl-a/b.”
t0“peanuts”
Claim · model-written summary
Polynomial models performed slightly better than linear models for peanut chlorophyll estimation.
- Taxon
- peanutsArachis hypogaeat0
- Outcome
- Model performancese0
- Direction
- slightly bettere0
- Comparator
- linear modele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Model performances were slightly better with the polynomial model compared to the linear model in all experimental treatments.”
t0“peanuts”
Claim · model-written summary
The authors recommend the linear model for ease of use.
- Taxon
- peanutsArachis hypogaeat0
- Outcome
- use the linear modele0
- Qualifier
- ease of usee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Since the difference between model performances is small, it is recommended to use the linear model due to its ease of use.”
t0“peanuts”
Claim · model-written summary
Portable chlorophyll meters can estimate peanut total chlorophyll content under saline conditions.
- Taxon
- peanutsArachis hypogaeat0
- Outcome
- total chlorophyll contente0
- Qualifier
- under saline conditionse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In addition, the total chlorophyll content can be safely estimated under saline conditions by using portable chlorophyll meters.”
t0“peanuts”
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