Abstract
To compare the drought resistance of bluegrass seedlings,the 14 varieties of Kentucky bluegrass seed were sowing after disinfection in the plastic pots,then thinned after emergence and fixed strains at 2to 3true leaf,left 15 uniform growth and distribution plants in every pot and regularly watering to ensure the normal growth of the seedlings.Drought stress trails were identified at 2to 3true leaf period by adding the PEG-6000 according to the Michel formula which are:0MPa(control),-0.3,-0.6,-0.9,-1.2MPa in the study.Then supplement water every two days to maintain the concentration.Two groups of drought treatment and control(normal watering)were set to simulate drought stress of 14 bluegrass cultivars and four replications were set by treatment.The physiological and biochemical index,such as chlorophyll(CHL),malondialdehyde(MDA)content,proline(Pro)content,peroxidase(POD)and superoxide dismutase(SOD)activity were measured and analyzed.The content of CHL was decreased;and the content of the Pro,MDA and SOD showed upward trend;the POD activity increased at first and then decreased and finally increase again in the bluegrass seedlings;Drought resistance of 14 bluegrass varieties were obtained by subordinate function the order is:The No.3StorpyNo.10 Narrow leaf bluegrassNo.1MeriNo.2Geronimoi=No.9Blue apphireNo.7Kentucky bluegrassNo.11 Kentucky bluegrassNo.4Kentucky bluegrassNo.5 WabashNo.8Bluegrass=No.13KentuckyNo.14 Kentucky bluegrassNo.6Monopoly=No.12 Fylking.
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Claims 4
Claim · model-written summary
Drought stress decreased chlorophyll content in Kentucky bluegrass seedlings.
- Taxon
- Kentucky bluegrass
.jpg?width=60)
Poa pratensise0 - Treatment
- Drought stresse5
- Outcome
- content of CHLe1
- Direction
- decreasede1
- Comparator
- control(normal watering)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the 14 varieties of Kentucky bluegrass seed”
e1“The content of CHL was decreased”
e5“Drought stress trails were identified at 2to 3true leaf period by adding the PEG-6000”
e6“Two groups of drought treatment and control(normal watering)were set to simulate drought stress”
Claim · model-written summary
Drought stress increased proline, MDA and SOD content in Kentucky bluegrass seedlings.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- Drought stresse5
- Outcome
- content of the Pro,MDA and SODe2
- Direction
- upward trende2
- Comparator
- control(normal watering)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 14 varieties of Kentucky bluegrass seed”
e2“content of the Pro,MDA and SOD showed upward trend”
e5“Drought stress trails were identified at 2to 3true leaf period by adding the PEG-6000”
e6“Two groups of drought treatment and control(normal watering)were set to simulate drought stress”
Claim · model-written summary
POD activity increased at first and then decreased under drought stress in Kentucky bluegrass seedlings.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- Drought stresse5
- Outcome
- POD activitye3
- Direction
- increased at first and then decreasede3
- Comparator
- control(normal watering)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 14 varieties of Kentucky bluegrass seed”
e3“the POD activity increased at first and then decreased and finally increase again”
e5“Drought stress trails were identified at 2to 3true leaf period by adding the PEG-6000”
e6“Two groups of drought treatment and control(normal watering)were set to simulate drought stress”
Claim · model-written summary
The 14 Kentucky bluegrass varieties were ranked by drought resistance using subordinate function values.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Outcome
- Drought resistancee4
- Qualifier
- obtained by subordinate functione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 14 varieties of Kentucky bluegrass seed”
e4“Drought resistance of 14 bluegrass varieties were obtained by subordinate function”
The same questions in other papers
drought · physiology: pigments · Poa pratensis (Kentucky bluegrass)Results agree
1 paper in the same direction as this paper
- negative
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.