Abstract
Rooted cutting propagation is widely used for maximising tree yield, quality and uniformity in conjunction with clonal selection. Some eucalypt species are deployed as rooted cuttings but many are considered to difficult to root. This study examined IBA effects on photoinhibition, root formation, mortality and root and shoot development in cuttings of Corymbia torelliana, C. citriodora and their hybrids. IBA had little or no effect on photoinhibition but it had strong, dose-dependent effects on root formation and mortality. IBA frequently increases primary root number of rooted cutting but it did not increase total root weight, length, surface area or volume, possibly because the highest doe (8g IBA/kg IBA/kg powder) caused leaf abscission and sometimes reduced leaf area (by 55-79%)or shoot dry weight (by 40-58%). An intermediate dose (3g IBA/kg powder) most consistnely improved root formation with little or no effect on mortality or shoot development. Across the F1 hybrid families this treatment increased the number of rooted cuttings by 72-121% and more than ddoubled the number of primary roots per rooted cutting (from 1.1-1.7 roots to 3.5-4.1 roots). This simple treatment will facilitate commercial multiplication of superior individuals or selected families of C. torelliana x C. citriodora through a vegetative propagation system.
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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
IBA had little or no effect on photoinhibition.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- IBAe0
- Outcome
- photoinhibitione0
- Direction
- little or no effecte0
Not reportedComparator
Verbatim
e0“IBA had little or no effect on photoinhibition”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
IBA had strong dose-dependent effects on root formation and mortality.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- IBAe1
- Outcome
- root formation and mortalitye0
Not reportedDirection
Verbatim
e0“it had strong, dose-dependent effects on root formation and mortality”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
e1“IBA had little or no effect”
Claim · model-written summary
IBA frequently increased primary root number.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- IBAe0
- Outcome
- primary root numbere0
- Direction
- increasese0
Not reportedComparator
Verbatim
e0“IBA frequently increases primary root number of rooted cutting”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
IBA did not increase total root weight, length, surface area or volume.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- IBAe1
- Outcome
- total root weight, length, surface area or volumee0
- Direction
- did not increasee0
Not reportedComparator
Verbatim
e0“it did not increase total root weight, length, surface area or volume”
e1“IBA frequently increases”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The highest IBA dose caused leaf abscission.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- 8g IBA/kg IBA/kg powdere0
- Outcome
- leaf abscissione0
Not reportedComparatorDirection
Verbatim
e0“highest doe (8g IBA/kg IBA/kg powder) caused leaf abscission”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The highest IBA dose sometimes reduced leaf area by 55-79%.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- 8g IBA/kg IBA/kg powdere0
- Outcome
- leaf areae0
- Direction
- reducede0
- Value
- 55-79%e0
- Qualifier
- sometimese0
Not reportedComparator
Verbatim
e0“highest doe (8g IBA/kg IBA/kg powder) caused leaf abscission and sometimes reduced leaf area (by 55-79%)”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The highest IBA dose sometimes reduced shoot dry weight by 40-58%.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- 8g IBA/kg IBA/kg powdere0
- Outcome
- shoot dry weighte0
- Direction
- reducede0
- Value
- 40-58%e0
- Qualifier
- sometimese0
Not reportedComparator
Verbatim
e0“highest doe (8g IBA/kg IBA/kg powder) caused leaf abscission and sometimes reduced leaf area (by 55-79%)or shoot dry weight (by 40-58%)”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
An intermediate IBA dose most consistently improved root formation.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- 3g IBA/kg powdere0
- Outcome
- root formatione0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“An intermediate dose (3g IBA/kg powder) most consistnely improved root formation”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
An intermediate IBA dose had little or no effect on mortality or shoot development.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Treatment
- 3g IBA/kg powdere0
- Outcome
- mortality or shoot developmente0
- Direction
- little or no effecte0
Not reportedComparator
Verbatim
e0“An intermediate dose (3g IBA/kg powder) most consistnely improved root formation with little or no effect on mortality or shoot development”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The intermediate IBA dose increased rooted F1 hybrid cuttings by 72-121%.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Material
- F1 hybrid familiese0
- Treatment
- 3g IBA/kg powdere1
- Outcome
- number of rooted cuttingse0
- Direction
- increasede0
- Value
- 72-121%e0
Not reportedComparator
Verbatim
e0“Across the F1 hybrid families this treatment increased the number of rooted cuttings by 72-121%”
e1“An intermediate dose (3g IBA/kg powder)”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The intermediate IBA dose more than doubled primary roots per rooted cutting.
- Taxon
- Corymbia torelliana, C. citriodora and F1 hybrid cuttingst0
- Material
- F1 hybrid familiese0
- Treatment
- 3g IBA/kg powdere1
- Outcome
- number of primary roots per rooted cuttinge0
- Direction
- ddoublede0
- Value
- 3.5-4.1 rootse0
- Qualifier
- from 1.1-1.7 rootse0
Not reportedComparator
Verbatim
e0“Across the F1 hybrid families this treatment increased the number of rooted cuttings by 72-121% and more than ddoubled the number of primary roots per rooted cutting (from 1.1-1.7 roots to 3.5-4.1 roots)”
e1“An intermediate dose (3g IBA/kg powder)”
t0“Corymbia torelliana, C. citriodora and F1 hybrid cuttings”
Claim · model-written summary
The treatment may facilitate commercial multiplication of selected hybrids.
- Taxon
- C. torelliana x C. citriodora
Corymbia torellianae0 - Outcome
- commercial multiplicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This simple treatment will facilitate commercial multiplication of superior individuals or selected families of C. torelliana x C. citriodora through a vegetative propagation system”