Abstract
【Objective】 The purpose of this study was to illuminate the sensibility of the exogenous hormones to the plant height characters of a new dwarf mutant AS98 and determine which kind of hormone deficiency this mutant belongs to. 【Method】 Two cotton lines, dwarf mutant AS98 and normal type LHF10W99, were used as materials in this research. AS98 was treated with different contents of exogenous GA3, IAA and BR. The changes of plant height, internode length and leaf number were investigated in different treatments. Meanwhile, the activities of α-amylase, POD and SOD of the mutant were analyzed after the mutant AS98 was treated with GA3 and PP333. 【Result】 The result indicated that the average plant height, internode length, boll weight and seed index of AS98 without hormone treatment were markedly lower than that of normal genotype LHF10W99, respectively, but their leaf number and lint percentage were not significantly different compared with that of LHF10W99. After being treated with 100 mg·L-1exogenous GA3 continuously, the plant height and internode length of AS98 showed very significant difference compared with AS98 without being treated with hormone, and reached that of the normal type of LHF10W99. But the plant height and internode length of AS98 treated with IAA and BR did not show significant difference with that of the control. The regression analysis showed that there was a significant relationship between the exogenous GA3 and plant height, internode length of mutant AS98, but there was no significant relationship between the plant height and IAA and BR. Moreover, the exogenous GA3 could increase the α-amylase activity of AS98 and decrease POD and SOD activities. On the contrary, PP333 could reduce the α-amylase activity of AS98 and up-regulate POD and SOD activities. 【Conclusion】 It is concluded that AS98 is a new super-dwarf mutant with normal broadleaf. The plant height of AS98 is sensitive to the exogenous GA3, and can be resumed to normal height with exogenous GA3 continuous treatment. The α-amylase activity of AS98 is sensitive to exogenous GA3 and PP333. AS98 is a GA3-deficiency dwarf mutant.
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Claims 13
Claim · model-written summary
Untreated AS98 had lower plant height, internode length, boll weight and seed index than LHF10W99.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- AS98e0
- Outcome
- average plant height, internode length, boll weight and seed indexe0
- Direction
- lowere0
- Comparator
- normal genotype LHF10W99e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average plant height, internode length, boll weight and seed index of AS98 without hormone treatment were markedly lower than that of normal genotype LHF10W99”
t0“cotton”
Claim · model-written summary
AS98 leaf number and lint percentage did not differ significantly from LHF10W99.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98t0
- Outcome
- leaf number and lint percentagee0
- Direction
- not significantly differente0
- Comparator
- LHF10W99e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their leaf number and lint percentage were not significantly different compared with that of LHF10W99”
t0“cotton dwarf-mutant AS98”
Claim · model-written summary
Continuous 100 mg·L-1 GA3 raised AS98 plant height and internode length to the normal type, with a very significant difference from untreated AS98.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- 100 mg·L-1exogenous GA3 continuouslye0
- Outcome
- plant height and internode lengthe0
- Direction
- reached that of the normal typee0
- Comparator
- AS98 without being treated with hormonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After being treated with 100 mg·L-1exogenous GA3 continuously, the plant height and internode length of AS98 showed very significant difference compared with AS98 without being treated with hormone, and reached that of the normal type of LHF10W99.”
t0“cotton”
Claim · model-written summary
IAA treatment did not significantly change AS98 plant height or internode length.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- IAAe0
- Outcome
- plant height and internode lengthe0
- Direction
- did not show significant differencee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height and internode length of AS98 treated with IAA and BR did not show significant difference with that of the control”
t0“cotton”
Claim · model-written summary
BR treatment did not significantly change AS98 plant height or internode length.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- BRe0
- Outcome
- plant height and internode lengthe0
- Direction
- did not show significant differencee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height and internode length of AS98 treated with IAA and BR did not show significant difference with that of the control”
t0“cotton”
Claim · model-written summary
Exogenous GA3 had a significant relationship with AS98 plant height and internode length.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- exogenous GA3e0
- Outcome
- plant height, internode lengthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant relationship between the exogenous GA3 and plant height, internode length of mutant AS98”
t0“cotton”
Claim · model-written summary
IAA had no significant relationship with AS98 plant height.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98t0
- Treatment
- IAAe0
- Outcome
- plant heighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant relationship between the plant height and IAA and BR”
t0“cotton dwarf-mutant AS98”
Claim · model-written summary
BR had no significant relationship with AS98 plant height.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98t0
- Treatment
- BRe0
- Outcome
- plant heighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant relationship between the plant height and IAA and BR”
t0“cotton dwarf-mutant AS98”
Claim · model-written summary
GA3 increased AS98 α-amylase activity.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- exogenous GA3e0
- Gene
- α-amylasee0
- Outcome
- α-amylase activitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous GA3 could increase the α-amylase activity of AS98”
t0“cotton”
Claim · model-written summary
GA3 decreased AS98 POD and SOD activities.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98t0
- Treatment
- exogenous GA3e0
- Gene
- POD and SODe0
- Outcome
- POD and SOD activitiese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous GA3 could increase the α-amylase activity of AS98 and decrease POD and SOD activities”
t0“cotton dwarf-mutant AS98”
Claim · model-written summary
PP333 reduced AS98 α-amylase activity.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Treatment
- PP333e0
- Gene
- α-amylasee0
- Outcome
- α-amylase activitye0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 could reduce the α-amylase activity of AS98”
t0“cotton”
Claim · model-written summary
PP333 upregulated AS98 POD and SOD activities.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98t0
- Treatment
- PP333e0
- Gene
- POD and SODe0
- Outcome
- POD and SOD activitiese0
- Direction
- up-regulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 could reduce the α-amylase activity of AS98 and up-regulate POD and SOD activities”
t0“cotton dwarf-mutant AS98”
Claim · model-written summary
The authors classify AS98 as a GA3-deficiency dwarf mutant.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AS98e0
- Outcome
- GA3-deficiency dwarf mutante0
- Qualifier
- GA3-deficiencye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AS98 is a GA3-deficiency dwarf mutant.”
t0“cotton”
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