Abstract
In the current study, the effect of water deficit stress or drought on relative water content and cell membrane stability of dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment carried out at Islamic Azad University, Jiroft branch, in 2009. It was a split plot experiment based on Randomized Complete Block Design with three replications, in which vertical factor included three levels of drought stress (irrigation when soil moisture reached 75% of field capacity [mild stress], irrigation when soil moisture reached 50% of field capacity [moderate stress] and irrigation when soil moisture reached 25% of field capacity [severe stress]). The results showed that the effect of water deficit stress was significant on relative water content at 5% level and on cell membrane stability at 1% level. Water stress significantly decreased relative water content from 77.69% under mild stress under severe stress. Relative water content increased as manure level increased. As the stress was intensified, the electrolyte leakage increased, but it started to decrease under severe stress. The manure treatment of 40 t/ha had the greatest electrolyte leakage (328.89 dS.m -1 ).
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Claims 7
Claim · model-written summary
Water stress significantly decreased relative water content of Dracocephalum moldavica from 77.69% under mild stress.
- Taxon
- Dracocephalum moldavica
Dracocephalum moldavicae0 - Treatment
- Water stresse1
- Outcome
- relative water contente1
- Direction
- decreasede1
- Value
- 77.69%e1
- Comparator
- mild stresse1
- Setting
- greenhouse experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e1“Water stress significantly decreased relative water content from 77.69% under mild stress under severe stress”
Claim · model-written summary
Relative water content of Dracocephalum moldavica increased as manure level increased.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- manure levele2
- Outcome
- relative water contente2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e2“Relative water content increased as manure level increased”
Claim · model-written summary
Electrolyte leakage of Dracocephalum moldavica increased as water stress was intensified.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- the stress was intensifiede3
- Outcome
- electrolyte leakagee3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e3“As the stress was intensified, the electrolyte leakage increased”
Claim · model-written summary
Electrolyte leakage of Dracocephalum moldavica started to decrease under severe stress.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- severe stresse4
- Outcome
- electrolyte leakagee4
- Direction
- decreasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e4“the electrolyte leakage increased, but it started to decrease under severe stress”
Claim · model-written summary
The 40 t/ha manure treatment gave the greatest electrolyte leakage in Dracocephalum moldavica, at 328.89 dS.m -1.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- manure treatment of 40 t/hae5
- Outcome
- electrolyte leakagee5
- Direction
- greateste5
- Value
- 328.89 dS.m -1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e5“The manure treatment of 40 t/ha had the greatest electrolyte leakage (328.89 dS.m -1 )”
Claim · model-written summary
Water deficit stress significantly affected relative water content of Dracocephalum moldavica at the 5% level.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- water deficit stresse6
- Outcome
- relative water contente6
- Qualifier
- at 5% levele6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e6“The results showed that the effect of water deficit stress was significant on relative water content at 5% level and on cell membrane stability at 1% level”
Claim · model-written summary
Water deficit stress significantly affected cell membrane stability of Dracocephalum moldavica at the 1% level.
- Taxon
- Dracocephalum moldavicaDracocephalum moldavicae0
- Treatment
- water deficit stresse6
- Outcome
- cell membrane stabilitye6
- Qualifier
- at 1% levele6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dragonhead (Dracocephalum moldavica) was studied in a greenhouse experiment”
e6“The results showed that the effect of water deficit stress was significant on relative water content at 5% level and on cell membrane stability at 1% level”