Abstract
The seed germinated rate,seedling survival rate,seedling biomass and physiological characteristics of seedlings leaves and roots were investigated after Tsuga longibracteata Cheng seeds seminated in 4 light intensity levels(100%,50%,25%,10% full sunlight) seedbeds for one growing season from 2004 to 2006.The seed germinated rate and seedlings survival rate were the highest in the 50% full sunlight environment.Full sunlight is not suitable for seedling biomass accumulation.In 50% full sunlight environment,the root,stem,leaf and total seedling biomass were all the highest.The increase of light intensity promoted more biomass distributing to roots to enhance the seedling roots′ ability of water absorbing,and promoted more overground biomass distributing to leaves.As the light intensity increasing,the contents of chlorophyll a(Chla),chlorophyll b(Chlb),chlorophyll(Chl) and carotenoid(Car) in seedling leaves declined,the rates of Chla/Chlb and Car/Chl rised.When light intensity was not more than 50% full sunlight,the MDA contents,the SOD activities and POD activities of seedling leaves and roots showed incremental trends along with light intensity increasing.When light intensity was full sunlight the MDA contents of seedling leaves,the SOD and POD activities of seedling leaves declined observably.The Pro contents of seedling leaves and roots were both lowermost in 25% full sunlight environment.The suited light intensity of T.longibracteata seeds germinating and seedlings growing should be hereabout 50% full sunlight.
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Claims 11
Claim · model-written summary
Seed germination rate and seedling survival rate were highest at 50% full sunlight.
- Taxon
- Tsuga longibracteata
Nothotsuga longibracteatat1 - Treatment
- 50% full sunlight environmente1
- Outcome
- seed germinated rate and seedlings survival ratee1
- Direction
- higheste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The seed germinated rate and seedlings survival rate were the highest in the 50% full sunlight environment.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Root, stem, leaf and total seedling biomass were all highest at 50% full sunlight.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- 50% full sunlight environmente3
- Outcome
- root, stem, leaf and total seedling biomasse3
- Direction
- higheste3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In 50% full sunlight environment,the root,stem,leaf and total seedling biomass were all the highest.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Increasing light intensity promoted more biomass distributed to roots.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- increase of light intensitye4
- Outcome
- more biomass distributing to rootse4
- Direction
- moree4
- Qualifier
- enhance the seedling roots′ ability of water absorbinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The increase of light intensity promoted more biomass distributing to roots to enhance the seedling roots′ ability of water absorbing,and promoted more overground biomass distributing to leaves.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Increasing light intensity promoted more overground biomass distributed to leaves.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- increase of light intensitye4
- Outcome
- more overground biomass distributing to leavese4
- Direction
- moree4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The increase of light intensity promoted more biomass distributing to roots to enhance the seedling roots′ ability of water absorbing,and promoted more overground biomass distributing to leaves.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Increasing light intensity lowered the contents of chlorophyll a, chlorophyll b, total chlorophyll and carotenoid in seedling leaves.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- light intensity increasinge5
- Outcome
- contents of chlorophyll a(Chla), chlorophyll b(Chlb), chlorophyll(Chl) and carotenoid(Car) in seedling leavese5
- Direction
- declinede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“As the light intensity increasing,the contents of chlorophyll a(Chla),chlorophyll b(Chlb),chlorophyll(Chl) and carotenoid(Car) in seedling leaves declined,the rates of Chla/Chlb and Car/Chl rised.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Increasing light intensity raised the Chla/Chlb and Car/Chl ratios.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- light intensity increasinge5
- Outcome
- the rates of Chla/Chlb and Car/Chle5
- Direction
- risede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“As the light intensity increasing,the contents of chlorophyll a(Chla),chlorophyll b(Chlb),chlorophyll(Chl) and carotenoid(Car) in seedling leaves declined,the rates of Chla/Chlb and Car/Chl rised.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Below full sunlight, MDA, SOD and POD activities in seedling leaves and roots showed incremental trends with increasing light intensity.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- light intensity was not more than 50% full sunlighte6
- Outcome
- MDA contents, the SOD activities and POD activitiese6
- Direction
- incremental trendse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“When light intensity was not more than 50% full sunlight,the MDA contents,the SOD activities and POD activities of seedling leaves and roots showed incremental trends along with light intensity increasing.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
At full sunlight, MDA contents and SOD and POD activities of seedling leaves declined.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- light intensity was full sunlighte7
- Outcome
- MDA contents of seedling leaves, the SOD and POD activities of seedling leavese7
- Direction
- declinede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“When light intensity was full sunlight the MDA contents of seedling leaves,the SOD and POD activities of seedling leaves declined observably.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Pro contents of seedling leaves and roots were lowest at 25% full sunlight.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- 25% full sunlight environmente6
- Outcome
- Pro contents of seedling leaves and rootse6
- Direction
- lowermoste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The Pro contents of seedling leaves and roots were both lowermost in 25% full sunlight environment.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
About 50% full sunlight is the suited light intensity for germinating seeds and growing seedlings of T. longibracteata.
- Taxon
- T.longibracteataNothotsuga longibracteatae7
- Outcome
- suited light intensitye7
- Value
- hereabout 50% full sunlighte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The suited light intensity of T.longibracteata seeds germinating and seedlings growing should be hereabout 50% full sunlight.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”
Claim · model-written summary
Full sunlight is not suitable for seedling biomass accumulation.
- Taxon
- Tsuga longibracteataNothotsuga longibracteatat1
- Treatment
- Full sunlighte2
- Outcome
- seedling biomass accumulatione2
- Direction
- not suitablee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Full sunlight is not suitable for seedling biomass accumulation.”
t1“Effect of light intensity environment on Tsuga longibracteata seed germinated,seedling survival and growth”