Abstract
【Objective】 Physiological effects of seed priming on salt resistance of sorghum seedlings were studied in this paper. 【Method】 Four sorghum hybrids seeds (Tiansi No. 1,Tx623A×89-363,Hei 30A×05-244 and Jinza 17) were soaked in 100 mmol·L-1 NaCl and 20%PEG solutions. Different degrees of salt injury were simulated with 0,50,100 and 150 mmol·L-1 NaCl solution by methods of nutritional sand culture. After seeds priming,germination conditions,salt resistance and physiological effects on seedlings were studied. 【Result】 Priming treatment enhanced the tolerance index and tolerance ratio to some degree. At the same time,the germination potential,germination rate,germination index and activity index were improved obviously,especially for the NaCl priming. In the course of stress of 100 mmol·L-1 NaCl solution,in particular the late stress,NaCl priming reduced MDA contents,enhanced SOD activities,contents of proline and soluble proteins in sorghum seedlings. 【Conclusion】 Seed priming technology could enhance the salt tolerance of sorghum seedlings which solved the problem of low germination rate and saving seedling rate in saline soil. The salt tolerance of sorghum seedlings was improved by increasing the activities of protective enzymes and contents of osmotic adjustment substances under the condition of salt stress.
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Claims 5
Claim · model-written summary
Priming enhanced the sorghum salt tolerance index and ratio.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming treatment enhanced the tolerance index and tolerance ratio to some degree.”
t0“sorghum seedlings”
Claim · model-written summary
Priming improved sorghum germination potential, rate and index.
- Treatment
- NaCl priminge0
- Outcome
- germination potential,germination rate,germination indexe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the germination potential,germination rate,germination index and activity index were improved obviously,especially for the NaCl priming.”
t0“sorghum seedlings”
Claim · model-written summary
Priming improved the sorghum activity index.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the germination potential,germination rate,germination index and activity index were improved obviously,especially for the NaCl priming.”
t0“sorghum seedlings”
Claim · model-written summary
NaCl priming reduced MDA in sorghum seedlings under salt stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in particular the late stress,NaCl priming reduced MDA contents,enhanced SOD activities,contents of proline and soluble proteins in sorghum seedlings.”
t0“sorghum seedlings”
Claim · model-written summary
NaCl priming enhanced SOD activity, proline and soluble proteins in sorghum seedlings.
- Treatment
- NaCl priminge0
- Outcome
- SOD activities,contents of proline and soluble proteinse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl priming reduced MDA contents,enhanced SOD activities,contents of proline and soluble proteins in sorghum seedlings.”
t0“sorghum seedlings”
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