Abstract
The purpose of this study was to evaluating the philological effects of a plant growth regulator in the reduction of salinity stress in the Calligonum comosum L. In this regard, a factorial randomized complete block design (RCBD) in the greenhouse condition was implemented. The salinity levels included 0 in control, 2.5, 5, 10 ds/m (mild, moderate and severe stress) respectively. Also the PGPR used as a plant growth regulator with concentrations 0 as control, 10-10, 10-8 and 10-6 mmol. After applying the desired treatments for 3 months, total chlorophyll, the yield and antioxidant activity of essential oil in the Calligonum comosum L. Were measured with international standard methods. The essential oil, extracted by a Clevenger apparatus, and antioxidant activity examined by DPPH method. The results showed, the highest amount of total chlorophyll was observed was observed in the interaction of control treatment of salinity (0) and 10-8 mmol PGPR with values of 0.85mlg/g. The results of essential oil yield showed although the increase in salinity level reduced the essential oil yield, by using the PGPR could improve the essential oil yield to a satisfactory level. The highest amount of essential oil yield obtained in the mild salinity stress (2.5ds/m) and 10-8 mmol PGPR concentration with values of 0.39g/cm. The results of antioxidant activity showed by using of PGPR the antioxidant activity improved in all of salinity stress level. Briefly, the results of this study showed that the use of PGPR is a suitable way to cope with the negative effects of salinity stress and increase the physiological performance of Calligonum comosum L.
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Claims 6
Claim · model-written summary
The highest total chlorophyll of Calligonum comosum was obtained with 10-8 mmol PGPR at control salinity, at 0.85 mlg/g.
- Taxon
- Calligonum comosum
Calligonum comosume1 - Treatment
- 10-8 mmol PGPRe0
- Outcome
- total chlorophylle0
- Direction
- higheste0
- Value
- 0.85mlg/ge0
- Qualifier
- control treatment of salinity (0)e0
- Setting
- greenhouse conditione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed, the highest amount of total chlorophyll was observed was observed in the interaction of control treatment of salinity (0) and 10-8 mmol PGPR with values of 0.85mlg/g”
e1“reduction of salinity stress in the Calligonum comosum L.”
e2“a factorial randomized complete block design (RCBD) in the greenhouse condition was implemented”
Claim · model-written summary
Increasing salinity level reduced essential oil yield of Calligonum comosum.
- Taxon
- Calligonum comosumCalligonum comosume1
- Treatment
- increase in salinity levele3
- Outcome
- essential oil yielde3
- Direction
- reducede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The results of essential oil yield showed although the increase in salinity level reduced the essential oil yield, by using the PGPR could improve the essential oil yield to a satisfactory level”
e1“reduction of salinity stress in the Calligonum comosum L.”
Claim · model-written summary
PGPR could improve essential oil yield of Calligonum comosum under salinity to a satisfactory level.
- Taxon
- Calligonum comosumCalligonum comosume1
- Treatment
- PGPRe3
- Outcome
- essential oil yielde3
- Direction
- could improvee3
- Qualifier
- to a satisfactory levele3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The results of essential oil yield showed although the increase in salinity level reduced the essential oil yield, by using the PGPR could improve the essential oil yield to a satisfactory level”
e1“reduction of salinity stress in the Calligonum comosum L.”
Claim · model-written summary
The highest essential oil yield, 0.39 g/cm, was obtained under mild salinity stress (2.5 ds/m) with 10-8 mmol PGPR.
- Taxon
- Calligonum comosumCalligonum comosume1
- Treatment
- 10-8 mmol PGPRe4
- Outcome
- essential oil yielde4
- Direction
- higheste4
- Value
- 0.39g/cme4
- Qualifier
- mild salinity stress (2.5ds/m)e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest amount of essential oil yield obtained in the mild salinity stress (2.5ds/m) and 10-8 mmol PGPR concentration with values of 0.39g/cm”
e1“reduction of salinity stress in the Calligonum comosum L.”
Claim · model-written summary
PGPR improved antioxidant activity of Calligonum comosum at all salinity stress levels.
- Taxon
- Calligonum comosumCalligonum comosume1
- Treatment
- PGPRe5
- Outcome
- antioxidant activitye5
- Direction
- improvede5
- Qualifier
- in all of salinity stress levele5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The results of antioxidant activity showed by using of PGPR the antioxidant activity improved in all of salinity stress level”
e1“reduction of salinity stress in the Calligonum comosum L.”
Claim · model-written summary
The authors conclude that PGPR use is a suitable way to cope with the negative effects of salinity stress in Calligonum comosum.
- Taxon
- Calligonum comosumCalligonum comosume6
- Treatment
- use of PGPRe6
- Outcome
- negative effects of salinity stresse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Briefly, the results of this study showed that the use of PGPR is a suitable way to cope with the negative effects of salinity stress and increase the physiological performance of Calligonum comosum L”