Abstract
The effects of 10℃ low temperature treatment on chilling tolerance,photosynthesis characteristics and protective system against active oxygen of 3 leaf stage seedlings of two seed-used watermelon varieties,one is black(wb10),the other is red(wb7),were investigated under low temperature stress.The research aim at supply theory basis for introduction and cultivation,improving Chilling tolerance of seed-used watermelon.The results showed that compared with control,chlorophyll content,the photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci),transpiration rate(Tr) were declined with the time extension of low temperature treatment,the leakage of electrolytes,the content of proline and the content of MDA were increased in all the four varieties.There was a considerable difference of chilling tolerance among different varieties;Chilling tolerance from being strong to weak is wb10wb7,seedlings of variety wb10 and wb7 with stronger chilling tolerance had lower electrolytic leakage(%),lower MDA content,higher proline content in leaves than those of variety wb10 and wb7 with weaker chilling tolerance.Therefore,chilling tolerance may be related to chilling injury index、photosynthesis characteristics and membrane stability in the plants.
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Claims 8
Claim · model-written summary
Chlorophyll content declined with longer low temperature treatment compared with control.
- Taxon
- Watermelon
Citrullus lanatust0 - Treatment
- low temperature treatmente0
- Outcome
- chlorophyll contente0
- Direction
- declinede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control,chlorophyll content,the photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci),transpiration rate(Tr) were declined with the time extension of low temperature treatment”
t0“Watermelon”
Claim · model-written summary
Photosynthetic rate, stomatal conductance and intercellular CO2 concentration declined with longer low temperature treatment.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- low temperature treatmente0
- Outcome
- photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci)e0
- Direction
- declinede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control,chlorophyll content,the photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci),transpiration rate(Tr) were declined with the time extension of low temperature treatment”
t0“Watermelon”
Claim · model-written summary
Transpiration rate declined with longer low temperature treatment.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- low temperature treatmente0
- Outcome
- transpiration rate(Tr)e0
- Direction
- declinede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with control,chlorophyll content,the photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci),transpiration rate(Tr) were declined with the time extension of low temperature treatment”
t0“Watermelon”
Claim · model-written summary
Electrolyte leakage, proline content and MDA content increased under low temperature treatment.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- low temperature treatmente1
- Outcome
- leakage of electrolytes,the content of proline and the content of MDAe0
- Direction
- increasede0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leakage of electrolytes,the content of proline and the content of MDA were increased in all the four varieties”
e1“compared with control,chlorophyll content,the photosynthetic rate(Pn),stomatal conductance(Gs)and intercellular CO2 concentration(Ci),transpiration rate(Tr) were declined with the time extension of low temperature treatment”
t0“Watermelon”
Claim · model-written summary
Chilling tolerance differed considerably between varieties.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- chilling tolerancee0
- Direction
- differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a considerable difference of chilling tolerance among different varieties”
t0“Watermelon”
Claim · model-written summary
The abstract ranks wb10 ahead of wb7 for chilling tolerance.
- Taxon
- WatermelonCitrullus lanatust0
- Material
- wb10wb7e0
- Outcome
- Chilling tolerancee0
- Direction
- strong to weake0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chilling tolerance from being strong to weak is wb10wb7”
t0“Watermelon”
Claim · model-written summary
The more tolerant seedlings had lower electrolyte leakage and MDA content and higher proline content.
- Taxon
- WatermelonCitrullus lanatust0
- Material
- wb10 and wb7e0
- Outcome
- electrolytic leakage(%),lower MDA content,higher proline content in leavese0
- Comparator
- weaker chilling tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stronger chilling tolerance had lower electrolytic leakage(%),lower MDA content,higher proline content in leaves than those of variety wb10 and wb7 with weaker chilling tolerance”
t0“Watermelon”
Claim · model-written summary
The authors suggest chilling tolerance relates to injury index, photosynthesis traits and membrane stability.
- Taxon
- WatermelonCitrullus lanatust0
- Organ / stage
- plantse0
- Outcome
- chilling tolerancee0
- Qualifier
- may be related toe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chilling tolerance may be related to chilling injury index、photosynthesis characteristics and membrane stability in the plants”
t0“Watermelon”
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cold · physiology: photosynthesis · Citrullus lanatus (watermelon)Results agree
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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.