Abstract
In this paper,the response of chlorophyll fluorescence parameters and dry matter weight of H.ammodendron,a typical species distributed in arid desert of northwestern China,to NaCl stress was investigated.In 30 days after NaCl stress,the dry matter weight of stems,leaves and roots,and the leaf number all decreased along with increase of salt concentration;in 50 days after NaCl stress,the dry matter weight and the leaf number showed no decrease trend along with increase of salt concentration,and the dry matter weight and the leaf number were larger in comparison with that of 30 days NaCl stress.The response of chlorophyll fluorescence parameters was opposite to the response of the dry matter weight and the leaf number.The chlorophyll fluorescence parameters of H.ammodendron decreased significantly with time under NaCl stress because the photosynthetic apparatus might be destructed and photosynthetic capacity decreased.Under NaCl stress,H.ammodendron seedlings can maintain the accumulation off dry matter though the photosynthetic capacity reduces,it might be its mechanism adapting to saline habitat.
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Claims 8
Claim · model-written summary
After 30 days of NaCl stress, stem, leaf and root dry matter weight decreased with increasing salt concentration.
- Taxon
- Haloxylon ammodendron Seedlings
Haloxylon ammodendront0 - Organ / stage
- stems,leaves and rootse0
- Treatment
- NaCl stresse0
- Outcome
- dry matter weighte0
- Direction
- decreasede0
- Qualifier
- 30 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 30 days after NaCl stress,the dry matter weight of stems,leaves and roots,and the leaf number all decreased along with increase of salt concentration”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
After 30 days of NaCl stress, leaf number decreased with increasing salt concentration.
- Taxon
- Haloxylon ammodendron SeedlingsHaloxylon ammodendront0
- Treatment
- NaCl stresse0
- Outcome
- leaf numbere0
- Direction
- decreasede0
- Qualifier
- 30 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 30 days after NaCl stress,the dry matter weight of stems,leaves and roots,and the leaf number all decreased along with increase of salt concentration”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
After 50 days of NaCl stress, dry matter weight did not decrease with salt concentration.
- Taxon
- Haloxylon ammodendron SeedlingsHaloxylon ammodendront0
- Treatment
- NaCl stresse0
- Outcome
- dry matter weighte0
- Direction
- no decrease trende0
- Qualifier
- 50 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 50 days after NaCl stress,the dry matter weight and the leaf number showed no decrease trend along with increase of salt concentration”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
After 50 days of NaCl stress, leaf number did not decrease with salt concentration.
- Taxon
- Haloxylon ammodendron SeedlingsHaloxylon ammodendront0
- Treatment
- NaCl stresse0
- Outcome
- leaf numbere0
- Direction
- no decrease trende0
- Qualifier
- 50 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 50 days after NaCl stress,the dry matter weight and the leaf number showed no decrease trend along with increase of salt concentration”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
Dry matter weight and leaf number were greater at 50 than 30 days of NaCl stress.
- Taxon
- Haloxylon ammodendron SeedlingsHaloxylon ammodendront0
- Outcome
- dry matter weight and the leaf numbere0
- Direction
- largere0
- Comparator
- 30 days NaCl stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry matter weight and the leaf number were larger in comparison with that of 30 days NaCl stress”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
Chlorophyll fluorescence parameters decreased significantly with time under NaCl stress.
- Taxon
- H.ammodendronHaloxylon ammodendrone0
- Treatment
- NaCl stresse0
- Outcome
- chlorophyll fluorescence parameterse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll fluorescence parameters of H.ammodendron decreased significantly with time under NaCl stress”
Claim · model-written summary
The authors suggest damage to photosynthetic apparatus could explain declining photosynthetic capacity under NaCl stress.
- Taxon
- Haloxylon ammodendron SeedlingsHaloxylon ammodendront0
- Outcome
- photosynthetic capacitye0
- Direction
- decreasede0
- Qualifier
- photosynthetic apparatus might be destructede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“because the photosynthetic apparatus might be destructed and photosynthetic capacity decreased”
t0“Haloxylon ammodendron Seedlings”
Claim · model-written summary
Seedlings maintained dry matter accumulation despite reduced photosynthetic capacity under NaCl stress.
- Taxon
- H.ammodendronHaloxylon ammodendrone0
- Outcome
- accumulation off dry mattere0
- Qualifier
- photosynthetic capacity reducese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H.ammodendron seedlings can maintain the accumulation off dry matter though the photosynthetic capacity reduces”