Abstract
[Objective] The purpose was to study the effects of salt stress on seed germination characteristic and the cell protection enzyme activities in melon seedlings.[Method] With the seeds of 3 kinds of melon varieties as the tested materials,5 gradient treatments were sup up for the mixed salt solution.The tested seeds were first soaked in cool water for 24 h for germination and then added with equal amount of treating solution for salt stress.The germination rate,germination viability,and the activities of SOD and POD were determined.[Result] The germination rate and germination viability of melon seeds were decreased gradually with the increase of the mixed salt solution concn.The resistance to salt for 3 melon varieties from high to low was: Xingnong 8,Qitian 2 and Longtian 3.Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced.POD activity in melon seedlings was first in increased with the maximum value of 0.637 2 U/g and then decreased slowly.The salt stress with high salt concn.that surpassed the endurance by the melon seedling itself could induce the decrease of SOD and POD activities.[Conclusion] This study provided the technique basis for the cultivation and the variety screening with salt resistance in melon.
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Claims 10
Claim · model-written summary
Germination rate declined as mixed-salt concentration rose.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe0 - Treatment
- increase of the mixed salt solution concne0
- Outcome
- germination ratee0
- Direction
- decreased graduallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The germination rate and germination viability of melon seeds were decreased gradually with the increase of the mixed salt solution concn”
Claim · model-written summary
Germination viability declined as mixed-salt concentration rose.
- Taxon
- melonCucumis meloe0
- Treatment
- increase of the mixed salt solution concne0
- Outcome
- germination viabilitye0
- Direction
- decreased graduallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The germination rate and germination viability of melon seeds were decreased gradually with the increase of the mixed salt solution concn”
Claim · model-written summary
Salt resistance ranked Xingnong 8 above Qitian 2 above Longtian 3.
- Taxon
- melonCucumis meloe0
- Material
- Xingnong 8,Qitian 2 and Longtian 3e0
- Outcome
- resistance to salte0
- Direction
- from high to lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resistance to salt for 3 melon varieties from high to low was: Xingnong 8,Qitian 2 and Longtian 3”
Claim · model-written summary
SOD activity first fell to a minimum of 0.013 3 U/mg.
- Taxon
- melonCucumis melot0
- Treatment
- salt stress treatment with different concn.e0
- Outcome
- SOD activitye0
- Direction
- decreasede0
- Value
- 0.013 3 U/mge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced”
t0“melon”
Claim · model-written summary
SOD activity subsequently rose to 0.031 1 U/mg.
- Taxon
- melonCucumis melot0
- Treatment
- salt stress treatment with different concn.e0
- Outcome
- SOD activitye0
- Direction
- rosee0
- Value
- 0.031 1 U/mge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced”
t0“melon”
Claim · model-written summary
SOD activity declined again after its peak.
- Taxon
- melonCucumis melot0
- Treatment
- salt stress treatment with different concn.e0
- Outcome
- SOD activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced”
t0“melon”
Claim · model-written summary
POD activity initially increased to 0.637 2 U/g.
- Taxon
- melonCucumis melot0
- Treatment
- salt stress treatment with different concn.e0
- Outcome
- POD activitye0
- Direction
- increasede0
- Value
- 0.637 2 U/ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced.POD activity in melon seedlings was first in increased with the maximum value of 0.637 2 U/g and then decreased slowly”
t0“melon”
Claim · model-written summary
POD activity subsequently decreased slowly.
- Taxon
- melonCucumis melot0
- Treatment
- salt stress treatment with different concn.e0
- Outcome
- POD activitye0
- Direction
- decreased slowlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the salt stress treatment with different concn.,SOD activity in melon seedlings was first decreased with the minimum value of 0.013 3 U/mg,then was rose with the maximum value of 0.031 1 U/mg,and then was reduced.POD activity in melon seedlings was first in increased with the maximum value of 0.637 2 U/g and then decreased slowly”
t0“melon”
Claim · model-written summary
High salt beyond seedling tolerance reduced SOD activity.
- Taxon
- melonCucumis meloe0
- Treatment
- salt stress with high salt concn.e0
- Outcome
- SODe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt stress with high salt concn.that surpassed the endurance by the melon seedling itself could induce the decrease of SOD and POD activities”
Claim · model-written summary
High salt beyond seedling tolerance reduced POD activity.
- Taxon
- melonCucumis meloe0
- Treatment
- salt stress with high salt concn.e0
- Outcome
- POD activitiese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt stress with high salt concn.that surpassed the endurance by the melon seedling itself could induce the decrease of SOD and POD activities”
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