Abstract
Poplar clone Kranti was selected to assess the morphological, physiological and biochemical responses under drought at different levels of water stress, as it is a common clone used to be grown in Uttarakhand for making paper and plywood. The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity) and changes in physiological and biochemical parameters related with drought tolerance were recorded. Alterations in physiological (i.e. decrease in relative water content) and biochemical parameters (i.e. increase in proline and soluble sugar content and build-up of malondialdehyde by-products) occurred in all the three levels of water stress, although drought represented the major determinant. Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC). Biochemical parameters like proline, soluble sugar and MDA content increased with severity and duration of stress, which helped plants to survive under severe stress. It was analyzed that for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days). Furthermore, this study manifested that acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species.
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Claims 8
Claim · model-written summary
Water stress decreased relative water content.
- Taxon
- Populus deltoides L.
Populus deltoidese1 - Material
- clone Krantie1
- Treatment
- watering regimese1
- Outcome
- relative water contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in relative water content”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
Water stress increased proline and soluble sugar content.
- Taxon
- Populus deltoides L.Populus deltoidese1
- Material
- clone Krantie1
- Treatment
- watering regimese1
- Outcome
- proline and soluble sugar contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in proline and soluble sugar content”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
Water stress led to buildup of malondialdehyde by-products.
- Taxon
- Populus deltoides L.Populus deltoidese1
- Material
- clone Krantie1
- Treatment
- watering regimese1
- Outcome
- build-up of malondialdehyde by-productse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“build-up of malondialdehyde by-products”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
Drought treatments decreased plant height, radial stem diameter, and harvest index relative to full field capacity.
- Taxon
- Populus deltoides L.Populus deltoidese1
- Material
- clone Krantie1
- Treatment
- Drought treatments (75%, 50% and 25% FC)e0
- Outcome
- plant height, radial stem diameter, harvest indexe0
- Direction
- decreasede0
- Comparator
- control (100% FC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC)”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
Drought decreased total biomass content relative to control.
- Taxon
- Populus deltoides L.Populus deltoidese1
- Material
- clone Krantie1
- Treatment
- Drought treatments (75%, 50% and 25% FC)e0
- Outcome
- total biomass contente0
- Direction
- decreasede0
- Comparator
- control (100% FC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC)”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
Proline, soluble sugar, and MDA content rose with stress severity and duration.
- Taxon
- Populus deltoides L.Populus deltoidese1
- Material
- clone Krantie1
- Treatment
- stresse0
- Outcome
- proline, soluble sugar and MDA contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline, soluble sugar and MDA content increased with severity and duration of stress”
e1“The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity)”
Claim · model-written summary
The authors recommend field capacity water or withdrawal to 75% field capacity through 60 days for better wood yield.
- Outcome
- optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacitye0
- Qualifier
- seedling establishment period (60 days)e0
PopulusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days)”
Claim · model-written summary
The authors related drought acclimation to the rapidity, severity, and duration of drought.
- Treatment
- drought evente0
- Outcome
- acclimation to drought stresse0
- Qualifier
- rapidity, severity, and duratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species”
The same questions in other papers
drought · yield · Populus deltoidesResults agree
1 paper in the same direction as this paper
- negative
drought · growth · Populus deltoidesResults agree
4 papers in the same direction as this paper
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.