Abstract
This paper studied the chilling tolerance and the activity of protective system against active oxygen of own-rooted and grafted watermelon seedlings. The results showed that under low temperature stress, the chilling tolerance of the watermelon seedlings grafted on figleaf was higher than that of the seedlings grafted on Chaofeng F1, and that of the own-rooted seedlings was the lowest. The decrease of chlorophyll, ascorbate and GSH contents and superoxide dismutase, ascorbate peroxidase and dehydroascorbate reductase activities as well as the increase of MDA content in the leaves of both own-rooted and grafted watermelon seedlings indicated an injury on the protective system against active oxygen, and induced lipid peroxidation under low temperature stress. However, the activity of protective system against active oxygen was higher in grafted watermelon seedlings than in own-rooted watermelon seedlings. The activity of protective system against active oxygen in figleaf gourd-grafted watermelon seedlings with stronger chilling tolerance was higher than that of Chaofeng F1-grafted watermelon seedlings with weaker chilling tolerance. It could be concluded that the enhancement of chilling tolerance in grafted watermelon seedlings was related to the increase of antioxidants and antioxidative enzyme activities.
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Claims 8
Claim · model-written summary
Under low temperature stress, watermelon seedlings grafted on figleaf gourd had higher chilling tolerance than seedlings grafted on Chaofeng F1.
- Taxon
- watermelon
Citrullus lanatust0 - Treatment
- grafted on figleafe0
- Outcome
- chilling tolerancee0
- Direction
- highere0
- Qualifier
- under low temperature stresse0
- Comparator
- seedlings grafted on Chaofeng F1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
e0“under low temperature stress, the chilling tolerance of the watermelon seedlings grafted on figleaf was higher than that of the seedlings grafted on Chaofeng F1”
Claim · model-written summary
Own-rooted watermelon seedlings had the lowest chilling tolerance compared with grafted seedlings.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- graftedt0
- Outcome
- chilling tolerancee0
- Direction
- loweste0
- Comparator
- own-rooted seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
e0“the chilling tolerance of the watermelon seedlings grafted on figleaf was higher than that of the seedlings grafted on Chaofeng F1, and that of the own-rooted seedlings was the lowest”
Claim · model-written summary
Chlorophyll, ascorbate and GSH contents decreased in leaves of both own-rooted and grafted watermelon seedlings under low temperature stress.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- low temperature stresst1
- Outcome
- chlorophyll, ascorbate and GSH contentse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
t1“low temperature stress”
e0“decrease of chlorophyll, ascorbate and GSH contents and superoxide dismutase, ascorbate peroxidase and dehydroascorbate reductase activities”
Claim · model-written summary
Superoxide dismutase, ascorbate peroxidase and dehydroascorbate reductase activities decreased in leaves of own-rooted and grafted watermelon seedlings under low temperature stress.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- low temperature stresst1
- Outcome
- superoxide dismutase, ascorbate peroxidase and dehydroascorbate reductase activitiese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
t1“low temperature stress”
e0“decrease of chlorophyll, ascorbate and GSH contents and superoxide dismutase, ascorbate peroxidase and dehydroascorbate reductase activities”
Claim · model-written summary
MDA content increased in leaves of own-rooted and grafted watermelon seedlings under low temperature stress.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- leavese0
- Treatment
- low temperature stresst1
- Outcome
- MDA contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
t1“low temperature stress”
e0“increase of MDA content in the leaves”
Claim · model-written summary
Activity of the protective system against active oxygen was higher in grafted than in own-rooted watermelon seedlings.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- graftede0
- Outcome
- activity of protective system against active oxygene0
- Direction
- highere0
- Comparator
- own-rooted watermelon seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
e0“the activity of protective system against active oxygen was higher in grafted watermelon seedlings than in own-rooted watermelon seedlings”
Claim · model-written summary
Protective system activity was higher in figleaf gourd-grafted seedlings (stronger chilling tolerance) than in Chaofeng F1-grafted seedlings (weaker chilling tolerance).
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- figleaf gourd-grafted watermelon seedlingse0
- Outcome
- activity of protective system against active oxygene0
- Direction
- highere0
- Comparator
- Chaofeng F1-grafted watermelon seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
e0“The activity of protective system against active oxygen in figleaf gourd-grafted watermelon seedlings with stronger chilling tolerance was higher than that of Chaofeng F1-grafted watermelon seedlings”
Claim · model-written summary
The authors conclude that enhanced chilling tolerance of grafted watermelon seedlings is related to increased antioxidants and antioxidative enzyme activities.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- graftede0
- Compound
- antioxidantse0
- Outcome
- chilling tolerancee0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grafted watermelon”
e0“the enhancement of chilling tolerance in grafted watermelon seedlings was related to the increase of antioxidants and antioxidative enzyme activities”
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