Abstract
Synopsis Five trials, testing the effect ofbottom heat on rooting, were set between January 1995 and December 1996 on P. patula and P. elliottii x P. caribaea cuttings as a method of improving root strike. In four out of five trials rooting percentages improved with the addition of bottom heat at optimal temperatures and in all trials, where root dry mass was assessed, bottom heat had a positive influence on root dry mass irrespective of season. The increase in root dry mass ranged between 97% and 166 %. In one trial, where cuttings were set in the warmest months of the year, rooting remained unchanged. Rooting declined for those treatments where average media temperatures were raised to extreme levels (>30° C). Optimum media temperatures, during the period of root initiation, were found to range between 25°C and 28°C. Rooting media temperature was also found to influence the amount of stem decay and basal callusing. Future research should concentrate on the relationship between moisture and heat requirements during rooting.
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Claims 7
Claim · model-written summary
Optimal bottom heat improved rooting percentage in four of five trials.
- Taxon
- P. patula and P. elliottii x P. caribaea
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Pinus elliottii
Pinus patulae1 - Treatment
- addition of bottom heat at optimal temperaturese0
- Outcome
- rooting percentagese0
- Direction
- improvede0
- Value
- four out of five trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“In four out of five trials rooting percentages improved with the addition of bottom heat at optimal temperatures”
e1“P. patula and P. elliottii x P. caribaea cuttings”
Claim · model-written summary
Bottom heat increased root dry mass by 97% to 166%, irrespective of season.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Treatment
- bottom heate0
- Outcome
- root dry masse0
- Direction
- increasee0
- Value
- 97% and 166 %e0
- Qualifier
- irrespective of seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bottom heat had a positive influence on root dry mass irrespective of season. The increase in root dry mass ranged between 97% and 166 %.”
e1“P. patula and P. elliottii x P. caribaea cuttings”
Claim · model-written summary
Rooting remained unchanged with bottom heat in the warmest months.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Treatment
- bottom heate2
- Outcome
- rootinge0
- Direction
- remained unchangede0
- Qualifier
- warmest months of the yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“where cuttings were set in the warmest months of the year, rooting remained unchanged”
e1“P. patula and P. elliottii x P. caribaea cuttings”
e2“rooting percentages improved with the addition of bottom heat”
Claim · model-written summary
Rooting declined when average media temperatures exceeded 30° C.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Treatment
- average media temperatures were raised to extreme levels (>30° C)e0
- Outcome
- Rootinge0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rooting declined for those treatments where average media temperatures were raised to extreme levels (>30° C).”
e1“P. patula and P. elliottii x P. caribaea cuttings”
Claim · model-written summary
Optimum media temperature for root initiation ranged from 25°C to 28°C.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Organ / stage
- root initiatione0
- Outcome
- Optimum media temperaturese0
- Value
- 25°C and 28°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum media temperatures, during the period of root initiation, were found to range between 25°C and 28°C.”
e1“P. patula and P. elliottii x P. caribaea cuttings”
Claim · model-written summary
Rooting media temperature influenced stem decay.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Treatment
- Rooting media temperaturee0
- Outcome
- amount of stem decaye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rooting media temperature was also found to influence the amount of stem decay and basal callusing.”
e1“P. patula and P. elliottii x P. caribaea cuttings”
Claim · model-written summary
Rooting media temperature influenced basal callusing.
- Taxon
- P. patula and P. elliottii x P. caribaeaPinus elliottiiPinus patulae1
- Treatment
- Rooting media temperaturee0
- Outcome
- basal callusinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rooting media temperature was also found to influence the amount of stem decay and basal callusing.”
e1“P. patula and P. elliottii x P. caribaea cuttings”
The same questions in other papers
heat · growth · Pinus patula (Mexican weeping pine)Positive and negative results
1 in the opposite direction
- no effect
in vitro · growth · Pinus patula (Mexican weeping pine)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
in vitro · growth · Pinus elliottii (slash pine)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.