Abstract
Three cotton (Gossypium hirsutum L.) germplasms (DP62, 84027, and 84033) were used to investigate the physiology of salt tolerance. Lines 84027 and 84033 were developed from the parental line DP62 and showed superior vigor under varying NaCl conditions (0.5 to 2.0 M) during germination and emergence. Proline levels increased in the leaves of all germplasms in response to increasing salinity. Varietal differences in proline levels did not reflect their variation in salt tolerance. Several physiological characteristics were also evaluated under non-saline condition in the greenhouse. There were no significant differences among germplasm sources for all parameters measured. However, salinity reduced transpiration rate, increased leaf diffusive resistance and leaf temperature for all lines. Ribosomal-RNA levels in all germplasms were evaluated after seeds were stressed for 24 hrs in various concentrations of NaCl and then germinated under normal conditions for 72 hrs. Ribosomal-RNA levels were inversely related to salt concentrations. Line 84033 followed by line 84027 had highest ribosomal-RNA content than the parental line DP62 when averaged over the four salt concentrations. Sodium content (ppm/g FW) and Cl⁻ content (ppm/g FW) were evaluated in microsomal and cell walls fractions as well as a cytoplasmic fraction which consisted of vacuoles, mitochondria, and plastids. The Cl⁻ ion exhibited a greater consistency in a concentration shift from one fraction to another as a function of time than did the Na⁺ ion. As a result, there may be a correlation between the drop in ribosomal-RNA and the amount of Cl⁻ in the microsomal fraction. Other parameters measured in the germinating seed were soluble protein (globulin), insoluble proteins (prolamin and glutelin) and fiber percentage. Variations within the germplasms were shown to exist. This study shows that even among lines that have been selected for salt tolerance from a single variety, the possibility exists that each of these lines may have a different mechanism to cope with salt stress.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Lines 84027 and 84033 had superior germination and emergence vigor under NaCl.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- 84027 and 84033e0
- Organ / stage
- germination and emergencee0
- Treatment
- NaCl conditions (0.5 to 2.0 M)e0
- Outcome
- vigore0
- Direction
- superiore0
- Comparator
- DP62e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lines 84027 and 84033 were developed from the parental line DP62 and showed superior vigor under varying NaCl conditions (0.5 to 2.0 M) during germination and emergence.”
t0“cotton”
Claim · model-written summary
Leaf proline increased with salinity in every germplasm.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- leavese0
- Treatment
- increasing salinitye0
- Outcome
- Proline levelse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline levels increased in the leaves of all germplasms in response to increasing salinity.”
t0“cotton”
Claim · model-written summary
Varietal proline levels did not reflect variation in salt tolerance.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Varietal differencese0
- Outcome
- salt tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varietal differences in proline levels did not reflect their variation in salt tolerance.”
t0“cotton”
Claim · model-written summary
Under nonsaline greenhouse conditions, measured physiological parameters did not differ significantly among germplasms.
- Taxon
- cottonGossypium hirsutumt0
- Material
- germplasm sourcese0
- Outcome
- parameters measurede0
- Direction
- no significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences among germplasm sources for all parameters measured.”
t0“cotton”
Claim · model-written summary
Salinity reduced transpiration rate in every line.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- salinitye0
- Outcome
- transpiration ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity reduced transpiration rate, increased leaf diffusive resistance and leaf temperature for all lines.”
t0“cotton”
Claim · model-written summary
Salinity increased leaf diffusive resistance and temperature in every line.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- salinitye0
- Outcome
- leaf diffusive resistance and leaf temperaturee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity reduced transpiration rate, increased leaf diffusive resistance and leaf temperature for all lines.”
t0“cotton”
Claim · model-written summary
Ribosomal RNA levels were inversely related to NaCl concentration.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- salt concentrationse0
- Outcome
- Ribosomal-RNA levelse0
- Direction
- inversely relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ribosomal-RNA levels were inversely related to salt concentrations.”
t0“cotton”
Claim · model-written summary
Line 84033 had the highest ribosomal RNA, followed by 84027, relative to DP62.
- Taxon
- cottonGossypium hirsutumt0
- Material
- 84033e0
- Outcome
- ribosomal-RNA contente0
- Direction
- higheste0
- Comparator
- DP62e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Line 84033 followed by line 84027 had highest ribosomal-RNA content than the parental line DP62 when averaged over the four salt concentrations.”
t0“cotton”
Claim · model-written summary
Chloride had a more consistent time dependent concentration shift among fractions than sodium.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- concentration shift from one fraction to anothere0
- Direction
- greatere0
- Qualifier
- Cl⁻ ione0
- Comparator
- Na⁺ ione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Cl⁻ ion exhibited a greater consistency in a concentration shift from one fraction to another as a function of time than did the Na⁺ ion.”
t0“cotton”
Claim · model-written summary
The authors suggested a possible association between declining ribosomal RNA and microsomal chloride.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- Cl⁻e0
- Outcome
- drop in ribosomal-RNAe0
- Qualifier
- microsomal fractione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there may be a correlation between the drop in ribosomal-RNA and the amount of Cl⁻ in the microsomal fraction.”
t0“cotton”
Claim · model-written summary
Germplasms varied in measured seed proteins and fiber percentage.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- germinating seede0
- Outcome
- Variations within the germplasmse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Other parameters measured in the germinating seed were soluble protein (globulin), insoluble proteins (prolamin and glutelin) and fiber percentage. Variations within the germplasms were shown to exist.”
t0“cotton”
Claim · model-written summary
The authors suggested that selected lines may use different salt coping mechanisms.
- Taxon
- cottonGossypium hirsutumt0
- Material
- these linese0
- Outcome
- different mechanism to cope with salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the possibility exists that each of these lines may have a different mechanism to cope with salt stress.”
t0“cotton”
The same questions in other papers
sodium chloride · growth · Gossypium hirsutum (cotton)Results differ
14 papers in the same direction as this paper · 27 in the opposite direction
- negative
- negative
- negative
38 papers more in this group
See all 42 papers →salinity · disease · Gossypium hirsutum (cotton)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →salinity · physiology: gas exchange · Gossypium hirsutum (cotton)Results agree
11 papers in the same direction as this paper
- negative
- negative
- negative
8 papers more in this group
See all 12 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.