Abstract
To study the cold tolerance of 10 pineapple varieties,the growth,osmoregulation substances and cell membrane permeability were determined under low temperature stress.The results showed that the dry weight of all seedlings increased dramatically after low temperature treatment,and significant differences of biomass accumulation among varieties were observed.Under low temperature treatment,the proline contents and relative membrane permeability increased with the passage of time.In general,the soluble protein contents increased firstly,then decreased,but it increased again at terminal stage in the varieties of 'Comte de Paris','Pearl','Tainong No.17','Tainong No.19' and 'MD-2';While the changes of soluble sugar contents were complicated.The proline contents,soluble protein contents and relative membrane permeability increased in leaves of all 10 pineapple varieties after 9 days of low temperature stress,while the soluble sugar contents in all the leaves increased except for 'Pearl' in which it decreased slightly.According to the variation of the related parameters,the comprehensive evaluation was made and the results showed that 10 pineapple varieties were classified into 3 groups:strong cold tolerance('MD-2'and 'Comte de Paris'),moderate cold tolerance('Tainong No.17','Tainong No.16','Mutant of Comte de Paris','Tainong No.13','Tainong No.19' and 'Smooth Cayenne') and weak cold tolerance('Pearl' and 'Tainong No.6').The cold tolerance of pineapple seedlings could be properly evaluated by comprehensive indexes of dry weight accumulation combined with other physiological characteristics.
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Claims 12
Claim · model-written summary
Dry weight of all pineapple seedlings increased dramatically under low temperature treatment.
- Taxon
- pineapple seedlings
Ananas comosust0 - Treatment
- low temperature treatmente1
- Outcome
- dry weighte1
- Direction
- increasede1
- Qualifier
- dramaticallye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e1“the dry weight of all seedlings increased dramatically after low temperature treatment,and significant differences of biomass accumulation among varieties were observed”
Claim · model-written summary
Biomass accumulation differed significantly among the pineapple varieties.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- 10 pineapple varietiese0
- Outcome
- biomass accumulatione1
- Qualifier
- among varietiese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e0“To study the cold tolerance of 10 pineapple varieties,the growth,osmoregulation substances and cell membrane permeability were determined under low temperature stress”
e1“the dry weight of all seedlings increased dramatically after low temperature treatment,and significant differences of biomass accumulation among varieties were observed”
Claim · model-written summary
Under low temperature, proline contents and relative membrane permeability increased with time.
- Taxon
- pineapple seedlingsAnanas comosust0
- Treatment
- low temperature treatmente2
- Outcome
- the proline contents and relative membrane permeabilitye2
- Direction
- increasede2
- Qualifier
- with the passage of timee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e2“Under low temperature treatment,the proline contents and relative membrane permeability increased with the passage of time”
Claim · model-written summary
Soluble protein contents rose, then fell, then rose again at the terminal stage in five named pineapple varieties under low temperature.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- 'Comte de Paris','Pearl','Tainong No.17','Tainong No.19' and 'MD-2'e3
- Treatment
- low temperature stresse0
- Outcome
- soluble protein contentse3
- Direction
- increasede3
- Qualifier
- increased firstly,then decreased,but it increased again at terminal stagee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e0“To study the cold tolerance of 10 pineapple varieties,the growth,osmoregulation substances and cell membrane permeability were determined under low temperature stress”
e3“the soluble protein contents increased firstly,then decreased,but it increased again at terminal stage in the varieties of 'Comte de Paris','Pearl','Tainong No.17','Tainong No.19' and 'MD-2'”
Claim · model-written summary
Changes in soluble sugar contents were complicated.
- Taxon
- pineapple seedlingsAnanas comosust0
- Outcome
- soluble sugar contentse4
- Qualifier
- complicatede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e4“the changes of soluble sugar contents were complicated”
Claim · model-written summary
Proline, soluble protein and relative membrane permeability increased in leaves of all 10 pineapple varieties after 9 days of low temperature stress.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- all 10 pineapple varietiese5
- Organ / stage
- leavese5
- Treatment
- 9 days of low temperature stresse5
- Outcome
- proline contents,soluble protein contents and relative membrane permeabilitye5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e5“The proline contents,soluble protein contents and relative membrane permeability increased in leaves of all 10 pineapple varieties after 9 days of low temperature stress”
Claim · model-written summary
Soluble sugar contents increased in all leaves under low temperature, except in Pearl.
- Taxon
- pineapple seedlingsAnanas comosust0
- Organ / stage
- all the leavese6
- Treatment
- low temperature stresse0
- Outcome
- soluble sugar contentse6
- Direction
- increasede6
- Qualifier
- except for 'Pearl'e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e0“To study the cold tolerance of 10 pineapple varieties,the growth,osmoregulation substances and cell membrane permeability were determined under low temperature stress”
e6“the soluble sugar contents in all the leaves increased except for 'Pearl' in which it decreased slightly”
Claim · model-written summary
Soluble sugar contents in 'Pearl' decreased slightly under low temperature.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- Pearle6
- Treatment
- low temperature stresse0
- Outcome
- soluble sugar contentse6
- Direction
- decreasede6
- Qualifier
- slightlye6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e0“To study the cold tolerance of 10 pineapple varieties,the growth,osmoregulation substances and cell membrane permeability were determined under low temperature stress”
e6“the soluble sugar contents in all the leaves increased except for 'Pearl' in which it decreased slightly”
Claim · model-written summary
'MD-2' and 'Comte de Paris' showed strong cold tolerance.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- 'MD-2'and 'Comte de Paris'e7
- Outcome
- cold tolerancee7
- Qualifier
- stronge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e7“strong cold tolerance('MD-2'and 'Comte de Paris')”
Claim · model-written summary
Six pineapple varieties showed moderate cold tolerance.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- 'Tainong No.17','Tainong No.16','Mutant of Comte de Paris','Tainong No.13','Tainong No.19' and 'Smooth Cayenne'e1
- Outcome
- cold tolerancee1
- Qualifier
- moderatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e1“moderate cold tolerance('Tainong No.17','Tainong No.16','Mutant of Comte de Paris','Tainong No.13','Tainong No.19' and 'Smooth Cayenne')”
Claim · model-written summary
'Pearl' and 'Tainong No.6' showed weak cold tolerance.
- Taxon
- pineapple seedlingsAnanas comosust0
- Material
- 'Pearl' and 'Tainong No.6'e1
- Outcome
- cold tolerancee1
- Qualifier
- weake1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e1“weak cold tolerance('Pearl' and 'Tainong No.6')”
Claim · model-written summary
Cold tolerance of pineapple seedlings could be evaluated with comprehensive indexes of dry weight accumulation combined with other physiological characteristics.
- Taxon
- pineapple seedlingsAnanas comosuse1
- Outcome
- comprehensive indexes of dry weight accumulation combined with other physiological characteristicse1
- Comparator
- other physiological characteristicse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth, physiological characteristics and evaluation of cold tolerance of pineapple seedlings under low temperature stress”
e1“The cold tolerance of pineapple seedlings could be properly evaluated by comprehensive indexes of dry weight accumulation combined with other physiological characteristics”
The same questions in other papers
cold · growth · Ananas comosus (pineapple)Positive and negative results
1 in the opposite direction
- negative
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.