Abstract
The objective of this study was to investigate the effects of the application of indole-3-butyric acid (IBA) at concentrations of 0, 30, 60, and 90 mg·L −1 , for 24 hours, on rooting of softwood and semihardwood cuttings of tea ( Camellia sinensis var. sinensis ‘Yabukita’ and C. sinensis var. assamica ‘IAC-259’) collected in winter and summer. In the summer, IBA increased root percentage of softwood cuttings from ‘Yabukita’ compared with the control. However, the rooting of semihardwood cuttings was unaffected by this growth regulator. In winter, application of 90 mg·L −1 IBA increased the rooting regardless of the type of ‘Yabukita’ cuttings. In addition, in ‘IAC-259’, there was an increase in dry weight, number of roots (NOR), and rooting percentage of softwood cuttings collected in summer with application of 90 mg·L −1 IBA compared with control. In contrast, during the same period of the year, the semihardwood cuttings of ‘IAC-259’ were unaffected by the IBA. In winter, the percentage of cutting survival, rooting, the number, and length of roots were unaffected by IBA in ‘IAC-259’. Overall, we would recommend the use of exogenous IBA for rooting of cuttings collected in the summer or winter.
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Claims 10
Claim · model-written summary
In summer, IBA increased rooting percentage of Yabukita softwood cuttings.
Verbatim
t0“Tea”
e0“In the summer, IBA increased root percentage of softwood cuttings from ‘Yabukita’ compared with the control”
Claim · model-written summary
IBA did not alter rooting of semihardwood cuttings.
- Taxon
- Teat0
- Organ / stage
- semihardwood cuttingse0
- Treatment
- this growth regulatore0
- Outcome
- rootinge0
- Direction
- unaffectede0
Not reportedComparator
Verbatim
t0“Tea”
e0“rooting of semihardwood cuttings was unaffected by this growth regulator”
Claim · model-written summary
In winter, 90 mg·L −1 IBA increased Yabukita rooting regardless of cutting type.
- Taxon
- Teat0
- Material
- ‘Yabukita’e0
- Treatment
- 90 mg·L −1 IBAe0
- Outcome
- rootinge0
- Direction
- increasede0
- Qualifier
- wintere0
Not reportedComparator
Verbatim
t0“Tea”
e0“In winter, application of 90 mg·L −1 IBA increased the rooting regardless of the type of ‘Yabukita’ cuttings”
Claim · model-written summary
Summer softwood IAC-259 cuttings had higher dry weight with 90 mg·L −1 IBA.
Verbatim
t0“Tea”
e0“in ‘IAC-259’, there was an increase in dry weight, number of roots (NOR), and rooting percentage of softwood cuttings collected in summer with application of 90 mg·L −1 IBA compared with control”
Claim · model-written summary
Summer softwood IAC-259 cuttings had more roots with 90 mg·L −1 IBA.
Verbatim
t0“Tea”
e0“in ‘IAC-259’, there was an increase in dry weight, number of roots (NOR), and rooting percentage of softwood cuttings collected in summer with application of 90 mg·L −1 IBA compared with control”
Claim · model-written summary
Summer softwood IAC-259 cuttings had higher rooting percentage with 90 mg·L −1 IBA.
Verbatim
t0“Tea”
e0“in ‘IAC-259’, there was an increase in dry weight, number of roots (NOR), and rooting percentage of softwood cuttings collected in summer with application of 90 mg·L −1 IBA compared with control”
Claim · model-written summary
In summer, IBA did not affect IAC-259 semihardwood cuttings.
- Taxon
- Teat0
- Material
- ‘IAC-259’e0
- Organ / stage
- semihardwood cuttingse0
- Treatment
- IBAe0
- Outcome
- semihardwood cuttingse0
- Direction
- unaffectede0
Not reportedComparator
Verbatim
t0“Tea”
e0“the semihardwood cuttings of ‘IAC-259’ were unaffected by the IBA”
Claim · model-written summary
In winter, IBA did not affect IAC-259 cutting survival or rooting.
- Taxon
- Teat0
- Material
- ‘IAC-259’e0
- Treatment
- IBAe0
- Outcome
- percentage of cutting survival, rootinge0
- Direction
- unaffectede0
- Qualifier
- wintere0
Not reportedComparator
Verbatim
t0“Tea”
e0“In winter, the percentage of cutting survival, rooting, the number, and length of roots were unaffected by IBA in ‘IAC-259’”
Claim · model-written summary
In winter, IBA did not affect number or length of IAC-259 roots.
- Taxon
- Teat0
- Material
- ‘IAC-259’e0
- Treatment
- IBAe0
- Outcome
- number, and length of rootse0
- Direction
- unaffectede0
- Qualifier
- wintere0
Not reportedComparator
Verbatim
t0“Tea”
e0“In winter, the percentage of cutting survival, rooting, the number, and length of roots were unaffected by IBA in ‘IAC-259’”
Claim · model-written summary
The authors recommend exogenous IBA for rooting tea cuttings collected in summer or winter.
Verbatim
t0“Tea”
e0“we would recommend the use of exogenous IBA for rooting of cuttings collected in the summer or winter”
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