Abstract
Based on the saline content and composition of the soda saline soil in Heilongjiang and other Provinces,this experiment simulated its saline composition,adopted pot culture,grafted cucumber (Cucumis sativus) seedlings onto 2 salt-tolerant rootstocks,and 2 salt-sensitive rootstocks as experimental materials. Ownroot seedlings were taken as the contrast. Saline solution(100 mmol·L-1,pH 9.0) was used to treat the soil. We studied the effects of salt stress on growth and soil enzyme activities of cucumber seedlings grafted on these different rootstocks. The results indicated that the yield per plant,the ground fresh weight,the root fresh weight,the plant height and the chlorophyll content of cucumber seedlings grafted on 2 salt-tolerant rootstocks were significantly higher than that of the 2 salt-sensitive rootstocks and own-root cucumber. The soil urease,neutral phosphatase activities after transplanted 30 d and the catalase,dehydrogenase activities after transplanted 40 d of cucumber seedlings grafted on salt-tolerant rootstocks were higher than that of salt-sensitive rootstocks and own-root plants. These 4 kinds of soil enzyme activities of cucumber seedlings grafted on salt-tolerant rootstocks after transplanted 50 d were all higher than that of salt-sensitive rootstocks and own-root cucumber. Under soil salinization condition,cucumber seedlings grafted on salt-tolerant rootstocks grew robustly and suffered low degree of salt injury. That account for that graft can significantly improve cucumber salt resistance; the resistance enhancement of cucumber seedlings grafted on salt-tolerant rootstocks is closely related to the increase of soil enzyme activity.
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Claims 5
Claim · model-written summary
Salt tolerant rootstocks increased yield, fresh weights, height, and chlorophyll compared with sensitive rootstocks and own roots.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- grafted on 2 salt-tolerant rootstockse0
- Outcome
- yield per plant,the ground fresh weight,the root fresh weighte0
- Direction
- highere0
- Comparator
- 2 salt-sensitive rootstocks and own-root cucumbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield per plant,the ground fresh weight,the root fresh weight,the plant height and the chlorophyll content of cucumber seedlings grafted on 2 salt-tolerant rootstocks were significantly higher than that of the 2 salt-sensitive rootstocks and own-root cucumber”
Claim · model-written summary
At 30 days, urease and neutral phosphatase activities were higher with tolerant rootstocks.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- grafted on salt-tolerant rootstockse0
- Outcome
- soil urease,neutral phosphatase activitiese0
- Direction
- highere0
- Qualifier
- after transplanted 30 de0
- Comparator
- salt-sensitive rootstocks and own-root plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil urease,neutral phosphatase activities after transplanted 30 d and the catalase,dehydrogenase activities after transplanted 40 d of cucumber seedlings grafted on salt-tolerant rootstocks were higher than that of salt-sensitive rootstocks and own-root plants”
Claim · model-written summary
At 40 days, catalase and dehydrogenase activities were higher with tolerant rootstocks.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- grafted on salt-tolerant rootstockse0
- Outcome
- catalase,dehydrogenase activitiese0
- Direction
- highere0
- Qualifier
- after transplanted 40 de0
- Comparator
- salt-sensitive rootstocks and own-root plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil urease,neutral phosphatase activities after transplanted 30 d and the catalase,dehydrogenase activities after transplanted 40 d of cucumber seedlings grafted on salt-tolerant rootstocks were higher than that of salt-sensitive rootstocks and own-root plants”
Claim · model-written summary
At 50 days, four soil enzyme activities were higher with tolerant rootstocks.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- grafted on salt-tolerant rootstockse0
- Outcome
- soil enzyme activitiese0
- Direction
- highere0
- Qualifier
- after transplanted 50 de0
- Comparator
- salt-sensitive rootstocks and own-root cucumbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These 4 kinds of soil enzyme activities of cucumber seedlings grafted on salt-tolerant rootstocks after transplanted 50 d were all higher than that of salt-sensitive rootstocks and own-root cucumber”
Claim · model-written summary
In saline soil, tolerant rootstock grafts grew robustly with low salt injury.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- grafted on salt-tolerant rootstockse0
- Outcome
- low degree of salt injurye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under soil salinization condition,cucumber seedlings grafted on salt-tolerant rootstocks grew robustly and suffered low degree of salt injury”
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