Abstract
The effects of low temperature stress on photosynthesis and chlorophyll fluorescence parameters in leaves of own-rooted and grafted Watermelon Seedling have been studied.The results showed that the photosynthetic rate(Pn),stomatal conductance(Gs) and intercellular CO2 concentration(Ci),Fv/Fm and ΦPSⅡwere significantly decreased under low temperature stress both in the leaves of grafted and own-rooted seedlings,but the decrease extent of all above traits was the lowest in the seedling grafted on Figleaf gourd with highest chilling tolerance.Otherwise,qP and qN were significantly decreased under low temperature stress both in grafted and own-rooted seedlings leaves,but the decrease extent of qP and qN was significantly bigger in own-rooted seedling than grafted seedlings.These results suggested that the higher photosynthetic rate of grafted seedlings as compared with own-rooted seedlings under low temperature stress may be due to lower inhibition extent of photochemical efficiency of PSII and damage extent of PSII and higher CO2 assimilation capacity in grafted seedlings than own-rooted seedling.
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Claims 7
Claim · model-written summary
Low temperature significantly decreased photosynthetic rate, stomatal conductance and intercellular CO2 concentration in grafted and own-rooted watermelon seedlings.
- Taxon
- Watermelon
Citrullus lanatust0 - Organ / stage
- leavese0
- Treatment
- low temperature stresse0
- Outcome
- photosynthetic rate(Pn),stomatal conductance(Gs) and intercellular CO2 concentration(Ci)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate(Pn),stomatal conductance(Gs) and intercellular CO2 concentration(Ci),Fv/Fm and ΦPSⅡwere significantly decreased under low temperature stress both in the leaves of grafted and own-rooted seedlings”
t0“Watermelon Seedling”
Claim · model-written summary
Low temperature significantly decreased Fv/Fm and ΦPSⅡ in both seedling types.
- Taxon
- WatermelonCitrullus lanatust0
- Organ / stage
- leavese0
- Treatment
- low temperature stresse0
- Outcome
- Fv/Fm and ΦPSⅡe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercellular CO2 concentration(Ci),Fv/Fm and ΦPSⅡwere significantly decreased under low temperature stress both in the leaves of grafted and own-rooted seedlings”
t0“Watermelon Seedling”
Claim · model-written summary
The decrease in these photosynthetic and fluorescence traits was lowest for watermelon grafted on Figleaf gourd.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- grafted on Figleaf gourde0
- Interactor
- Figleaf gourd
Cucurbita ficifoliae0other - Outcome
- decrease extent of all above traitse0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease extent of all above traits was the lowest in the seedling grafted on Figleaf gourd with highest chilling tolerance”
t0“Watermelon Seedling”
Claim · model-written summary
Low temperature significantly decreased qP and qN in grafted and own-rooted seedlings.
- Taxon
- WatermelonCitrullus lanatust0
- Organ / stage
- leavese0
- Treatment
- low temperature stresse0
- Outcome
- qP and qNe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“qP and qN were significantly decreased under low temperature stress both in grafted and own-rooted seedlings leaves”
t0“Watermelon Seedling”
Claim · model-written summary
The qP and qN decrease was significantly greater in own-rooted than grafted seedlings.
- Taxon
- WatermelonCitrullus lanatust0
- Material
- own-rooted seedlinge0
- Outcome
- decrease extent of qP and qNe0
- Direction
- biggere0
- Comparator
- grafted seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease extent of qP and qN was significantly bigger in own-rooted seedling than grafted seedlings”
t0“Watermelon Seedling”
Claim · model-written summary
Grafted seedlings had higher photosynthetic rate under low temperature than own-rooted seedlings.
- Taxon
- WatermelonCitrullus lanatust0
- Material
- grafted seedlingse0
- Treatment
- low temperature stresse0
- Outcome
- photosynthetic ratee0
- Direction
- highere0
- Comparator
- own-rooted seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the higher photosynthetic rate of grafted seedlings as compared with own-rooted seedlings under low temperature stress”
t0“Watermelon Seedling”
Claim · model-written summary
The authors attribute higher grafted-seedling photosynthesis to less PSII inhibition and damage and greater CO2 assimilation capacity.
- Taxon
- WatermelonCitrullus lanatust0
- Material
- grafted seedlingse0
- Outcome
- higher CO2 assimilation capacitye0
- Qualifier
- lower inhibition extent of photochemical efficiency of PSII and damage extent of PSIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“may be due to lower inhibition extent of photochemical efficiency of PSII and damage extent of PSII and higher CO2 assimilation capacity in grafted seedlings than own-rooted seedling”
t0“Watermelon Seedling”
The same questions in other papers
cold · physiology: photosynthesis · Citrullus lanatus (watermelon)Results 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.