Abstract
PEG-6000 was used to simulate soil water deficiency (- 0.4 MPa).In treatments with 6 BA at difierent concentrations,the micro-struture of the leaf of rice seedlings was examined.Without water stress, 6-BA with a concentheion in the range of 0. 1 ~ 1.0μg/L increased the fresh/dry weight and root:shoot ratio of the seedlings,the thickness of their leaves and the number of chloroplast and chlorophyll content.Under water shress created by PEG,the above concentrations of 6-BA promoted the formation of air cavities within the leaf,thus making it thicker,increased the number of silicon cells and bulliform cells and inhibited the degradation of chloroplasts and chlorophyll in the mesophyll cells.It is,therefore,speclated that at suitable concentrations,6-BA can not only promote the growth of rice under normal conditions but also increase its drought-resistance and thus help it survive water stress.
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Claims 6
Claim · model-written summary
6-BA at 0.1-1.0 μg/L increased fresh/dry weight and root:shoot ratio of rice seedlings without water stress.
- Taxon
- rice seedlings
Oryza sativae0 - Treatment
- 6-BA with a concentheion in the range of 0. 1 ~ 1.0μg/Le1
- Outcome
- fresh/dry weight and root:shoot ratioe1
- Direction
- increasede1
- Qualifier
- Without water stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf of rice seedlings was examined”
e1“Without water stress, 6-BA with a concentheion in the range of 0. 1 ~ 1.0μg/L increased the fresh/dry weight and root:shoot ratio of the seedlings,the thickness of their leaves and the number of chloroplast and chlorophyll content”
Claim · model-written summary
6-BA at 0.1-1.0 μg/L increased leaf thickness, chloroplast number and chlorophyll content of rice seedlings without water stress.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- 6-BA with a concentheion in the range of 0. 1 ~ 1.0μg/Le1
- Outcome
- the thickness of their leaves and the number of chloroplast and chlorophyll contente1
- Direction
- increasede1
- Qualifier
- Without water stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf of rice seedlings was examined”
e1“Without water stress, 6-BA with a concentheion in the range of 0. 1 ~ 1.0μg/L increased the fresh/dry weight and root:shoot ratio of the seedlings,the thickness of their leaves and the number of chloroplast and chlorophyll content”
Claim · model-written summary
Under PEG water stress, 6-BA promoted the formation of air cavities within the leaf, making it thicker.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- 6-BAe2
- Outcome
- formation of air cavities within the leafe2
- Direction
- promotede2
- Qualifier
- Under water shress created by PEGe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf of rice seedlings was examined”
e2“Under water shress created by PEG,the above concentrations of 6-BA promoted the formation of air cavities within the leaf,thus making it thicker,increased the number of silicon cells and bulliform cells and inhibited the degradation of chloroplasts and chlorophyll in the mesophyll cells”
Claim · model-written summary
Under PEG water stress, 6-BA increased the number of silicon cells and bulliform cells in rice leaves.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- 6-BAe2
- Outcome
- number of silicon cells and bulliform cellse2
- Direction
- increasede2
- Qualifier
- Under water shress created by PEGe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf of rice seedlings was examined”
e2“Under water shress created by PEG,the above concentrations of 6-BA promoted the formation of air cavities within the leaf,thus making it thicker,increased the number of silicon cells and bulliform cells and inhibited the degradation of chloroplasts and chlorophyll in the mesophyll cells”
Claim · model-written summary
Under PEG water stress, 6-BA inhibited the degradation of chloroplasts and chlorophyll in mesophyll cells of rice leaves.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- 6-BAe2
- Outcome
- degradation of chloroplasts and chlorophyll in the mesophyll cellse2
- Direction
- inhibitede2
- Qualifier
- Under water shress created by PEGe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf of rice seedlings was examined”
e2“Under water shress created by PEG,the above concentrations of 6-BA promoted the formation of air cavities within the leaf,thus making it thicker,increased the number of silicon cells and bulliform cells and inhibited the degradation of chloroplasts and chlorophyll in the mesophyll cells”
Claim · model-written summary
The authors speculate that 6-BA at suitable concentrations increases drought resistance of rice and helps it survive water stress.
- Taxon
- riceOryza sativae3
- Treatment
- 6-BAe3
- Outcome
- drought-resistancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“It is,therefore,speclated that at suitable concentrations,6-BA can not only promote the growth of rice under normal conditions but also increase its drought-resistance and thus help it survive water stress”
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