Abstract
[Objective]The research on the effect of exogenous spermidine(Spd) on the root vigor and the content of photosynthetic pigment in the leaf of two rice cultivars(Pokkali with salt-tolerant and Peta with salt-sensitive) were studied.[Method] Two rice varieties-Pokkali with the resistance to salt and Peta with the sensitivity to salt were introduced from IRRI and the effect of exogenous Spd on the root vigor and the content of photosynthetic pigment in the leaf of them was analyzed.[Results] The results showed that the root vigor of rice seedlings under salt stress of 200 mmol/L NaCl was increased at first and then decreased with the treatment time-lasting,which descending range of Peta was greater than that of Pokkali;and under the treatment of exogenous Spd,the resistance of Pokkali to salt stress was obviously stronger than that of Peta,which advantage was significant.The content of both Chl and Car in the Pokkali was more than those of CK and the increment range of Chl was larger than that of Car so that the ratio of Car/Chl was significantly decreased.In the variety-Peta,the content of Car was raised and the content of Chl was decreased compared with CK.The treatment of exogenous Spd could improve the content of Chl and Car,the ratio of Chla/Ch1b of two varieties,which were under salt stress,and there was larger increment in the content of Chl in Pokkali compared with Peta.[Conclusion] The treatment of exogenous Spd had the remission effect on the salt stress to root for less damage of salt to root,to the destroy of chloroplast structure for higher content of photosynthetic pigment and reduced the damage of salt stress to the compound of photosynthetic pigment peotien for higher photosynthetic capacity.
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Claims 8
Claim · model-written summary
Under salt stress, rice root vigor first increased and then decreased over treatment time, with a larger decline in Peta than Pokkali.
- Taxon
- rice
Oryza sativae0 - Material
- Petae0
- Treatment
- salt stress of 200 mmol/L NaCle0
- Outcome
- root vigore0
- Direction
- decreasede0
- Comparator
- Pokkalie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root vigor of rice seedlings under salt stress of 200 mmol/L NaCl was increased at first and then decreased with the treatment time-lasting,which descending range of Peta was greater than that of Pokkali”
Claim · model-written summary
With exogenous Spd, Pokkali had significantly stronger salt resistance than Peta.
- Taxon
- RiceOryza sativat0
- Material
- Pokkalie0
- Treatment
- exogenous Spde0
- Outcome
- resistance of Pokkali to salt stresse0
- Direction
- strongere0
- Comparator
- Petae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the treatment of exogenous Spd,the resistance of Pokkali to salt stress was obviously stronger than that of Peta,which advantage was significant”
t0“Rice Cultivar”
Claim · model-written summary
Pokkali chlorophyll content exceeded CK, with a larger increment than carotenoid content.
- Taxon
- RiceOryza sativat0
- Material
- Pokkalie0
- Outcome
- content of both Chl and Care0
- Direction
- more thane0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of both Chl and Car in the Pokkali was more than those of CK and the increment range of Chl was larger than that of Car”
t0“Rice Cultivar”
Claim · model-written summary
The Car/Chl ratio in Pokkali significantly decreased.
- Taxon
- RiceOryza sativat0
- Material
- Pokkalie0
- Outcome
- ratio of Car/Chle0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of both Chl and Car in the Pokkali was more than those of CK and the increment range of Chl was larger than that of Car so that the ratio of Car/Chl was significantly decreased”
t0“Rice Cultivar”
Claim · model-written summary
Peta carotenoid content rose relative to CK.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the variety-Peta,the content of Car was raised and the content of Chl was decreased compared with CK”
t0“Rice Cultivar”
Claim · model-written summary
Peta chlorophyll content fell relative to CK.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the variety-Peta,the content of Car was raised and the content of Chl was decreased compared with CK”
t0“Rice Cultivar”
Claim · model-written summary
Exogenous Spd improved chlorophyll and carotenoid contents and the Chla/Ch1b ratio in salt-stressed rice.
- Taxon
- RiceOryza sativat0
- Treatment
- exogenous Spde0
- Outcome
- content of Chl and Car,the ratio of Chla/Ch1be0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment of exogenous Spd could improve the content of Chl and Car,the ratio of Chla/Ch1b of two varieties,which were under salt stress”
t0“Rice Cultivar”
Claim · model-written summary
The Spd-associated increase in chlorophyll was larger in Pokkali than Peta.
- Taxon
- RiceOryza sativat0
- Material
- Pokkalie0
- Outcome
- content of Chle0
- Direction
- larger incremente0
- Comparator
- Petae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was larger increment in the content of Chl in Pokkali compared with Peta”
t0“Rice Cultivar”
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5 papers more in this group
See all 9 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.