Abstract
With chilling sensitive watermelon ‘linglongwang'as the tested material,we investigated the effects of exogenous 50mg/L NAA,25mg/L 6-BA,25mg/L GA3,25mg/L ABA on chilling injury index, the main content of active oxygen and the activity of antioxidant enzymes of watermelon seedlings under low temperature stress.The results showed that:(1)The appropriate concentration of 6-BA,GA3and ABA could significantly reduce the chilling injury index of watermelon seedling,while NAA worked in the opposite direction.(2)At the third day of cold stress,the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively;and the content of H2O2of watermelon seedling were reduced by 11.9%,18.9%and 22.7%at the fifth day of cold stress.(3)6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.Hence,it was indicated that appropriate concentration of exogenous 6-BA,GA3and ABA could effectively improve the activities of SOD, POD and CAT,slow down the acumination of H2O2and O-· 2as well as MDA,mitigate the damage of low temperature in watermelon seedling under low temperature stress,then strengthen the cold resistance of watermelon seedling.Furthermore,25mg/L 6-BA showed the best effect,could be applied to production.
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Claims 20
Claim · model-written summary
6-BA significantly reduced watermelon seedling chilling injury index.
- Taxon
- watermelon
Citrullus lanatuse0 - Treatment
- 6-BAe0
- Outcome
- chilling injury indexe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appropriate concentration of 6-BA,GA3and ABA could significantly reduce the chilling injury index of watermelon seedling”
Claim · model-written summary
GA3 significantly reduced watermelon seedling chilling injury index.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- GA3e0
- Outcome
- chilling injury indexe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appropriate concentration of 6-BA,GA3and ABA could significantly reduce the chilling injury index of watermelon seedling”
Claim · model-written summary
ABA significantly reduced watermelon seedling chilling injury index.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- ABAe0
- Outcome
- chilling injury indexe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appropriate concentration of 6-BA,GA3and ABA could significantly reduce the chilling injury index of watermelon seedling”
Claim · model-written summary
NAA had the opposite effect on chilling injury index.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- NAAe0
- Outcome
- chilling injury indexe1
- Direction
- opposite directione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while NAA worked in the opposite direction.”
e1“chilling injury index of watermelon seedling”
Claim · model-written summary
GA3 reduced superoxide generation by 9.0% on cold stress day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- GA3e0
- Outcome
- generation rate of O-· 2e0
- Direction
- reducede0
- Value
- 9.0%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
ABA reduced superoxide generation by 9.4% on day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- ABAe0
- Outcome
- generation rate of O-· 2e0
- Direction
- reducede0
- Value
- 9.4%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
6-BA reduced superoxide generation by 7.7% on day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 6-BAe0
- Outcome
- generation rate of O-· 2e0
- Direction
- reducede0
- Value
- 7.7%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
GA3 reduced seedling MDA content by 38.1% on day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- GA3e0
- Outcome
- content of MDAe0
- Direction
- reducede0
- Value
- 38.1%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
ABA reduced seedling MDA content by 40.1% on day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- ABAe0
- Outcome
- content of MDAe0
- Direction
- reducede0
- Value
- 40.1%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
6-BA reduced seedling MDA content by 45.9% on day three.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 6-BAe0
- Outcome
- content of MDAe0
- Direction
- reducede0
- Value
- 45.9%e0
- Qualifier
- third day of cold stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the generation rate of O-· 2and the content of MDA in watermelon seedling that GA3,ABA and 6-BA pretreated were significantly reduced by 9.0%,9.4%,7.7% and 38.1%,40.1%,45.9%,respectively”
e1“At the third day of cold stress”
Claim · model-written summary
GA3 reduced hydrogen peroxide content by 11.9% on day five.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- GA3e1
- Outcome
- content of H2O2e0
- Direction
- reducede0
- Value
- 11.9%e0
- Qualifier
- fifth day of cold stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of H2O2of watermelon seedling were reduced by 11.9%,18.9%and 22.7%at the fifth day of cold stress.”
e1“GA3,ABA and 6-BA pretreated”
Claim · model-written summary
ABA reduced hydrogen peroxide content by 18.9% on day five.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- ABAe1
- Outcome
- content of H2O2e0
- Direction
- reducede0
- Value
- 18.9%e0
- Qualifier
- fifth day of cold stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of H2O2of watermelon seedling were reduced by 11.9%,18.9%and 22.7%at the fifth day of cold stress.”
e1“GA3,ABA and 6-BA pretreated”
Claim · model-written summary
6-BA reduced hydrogen peroxide content by 22.7% on day five.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- 6-BAe1
- Outcome
- content of H2O2e0
- Direction
- reducede0
- Value
- 22.7%e0
- Qualifier
- fifth day of cold stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of H2O2of watermelon seedling were reduced by 11.9%,18.9%and 22.7%at the fifth day of cold stress.”
e1“GA3,ABA and 6-BA pretreated”
Claim · model-written summary
6-BA increased SOD, POD and CAT activity by 15.95%, 36.36% and 115.22%, respectively, on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- 6-BAe0
- Outcome
- SOD activitye0
- Direction
- increasede0
- Value
- 15.95%e0
- Qualifier
- seventh day of cold stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
GA3 increased SOD activity by 17.87% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- GA3e0
- Outcome
- SOD activitye0
- Direction
- increasede0
- Value
- 17.87%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
ABA increased SOD activity by 18.33% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- ABAe0
- Outcome
- SOD activitye0
- Direction
- increasede0
- Value
- 18.33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
6-BA increased POD activity by 36.36% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- 6-BAe0
- Outcome
- POD activitye0
- Direction
- increasede0
- Value
- 36.36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
GA3 increased POD activity by 73.74% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- GA3e0
- Outcome
- POD activitye0
- Direction
- increasede0
- Value
- 73.74%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
ABA increased POD activity by 145.45% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- ABAe0
- Outcome
- POD activitye0
- Direction
- increasede0
- Value
- 145.45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
Claim · model-written summary
6-BA increased CAT activity by 115.22% on day seven.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- 6-BAe0
- Outcome
- CAT activitye0
- Direction
- increasede0
- Value
- 115.22%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA,GA3and ABA pretreatment made SOD activity significantly increased by 15.95%,17.87% and 18.33% at the seventh day of cold stress,respec-tively;POD activity significantly increased by 36.36%,73.74% and 145.45%,respectively;CAT activity significantly increased by 115.22%,116.28% and 161.63%,respectively.”
e1“watermelon seedlings under low temperature stress”
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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.