Abstract
ABSTRACT Micropropagated banana plantlets need acclimatization to reduce the stresses caused by the change from in vitro to ex vitro environment. The objective of this study was to evaluate the influence of thermal stress on the acclimatization of micropropagated plantlets of banana cultivar ‘Prata Catarina’, supplemented with plant growth-promoting rhizobacteria. Four applications of the LPPC159 strain, belonging to the genus Bacillus were performed every 15 days. Inoculated plantlets did not show differences in the biometric variables compared to fertilized plantlets. Plantlets acclimatized for seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse showed greater pseudostem diameter, fresh and dry mass, and higher accumulations of N, P, K, Ca, Mg, S, Na, B, and Cu. No significant differences were observed between inoculated and non-inoculated plantlets. Inoculations had positive and negative effects only on the accumulations of N and Cu, respectively. The lowest thermal indices were observed for plantlets of T5 (7 days in a controlled environment + 7 days in a tunnel + 46 days in a greenhouse) and T1 (14 days in a shade tunnel + 46 days in a greenhouse), promoting better thermal comfort for plantlets of these treatments. Using shade in the acclimatization phase combined with plant growth-promoting rhizobacteria promoted gains in pseudostem diameter, fresh mass, dry mass, and nutrient accumulation in the plantlets. These conditions also allowed reductions in thermal stress in the acclimatization phase of micropropagated plantlets of banana cultivar ‘Prata Catarina’.
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Claims 10
Claim · model-written summary
Plantlets inoculated with the Bacillus PGPR did not differ in biometric variables from fertilized plantlets.
Verbatim
t0“banana”
e0“Inoculated plantlets did not show differences in the biometric variables compared to fertilized plantlets”
Claim · model-written summary
Plantlets acclimatized for seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse showed greater pseudostem diameter, fresh mass and dry mass.
- Taxon
- bananat0
- Treatment
- seven days under controlled conditions, seven days in tunnel and 46 days in greenhousee0
- Outcome
- pseudostem diameter, fresh and dry masse0
- Direction
- greatere0
Not reportedComparator
Verbatim
t0“banana”
e0“Plantlets acclimatized for seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse showed greater pseudostem diameter, fresh and dry mass”
Claim · model-written summary
The same acclimatization regime gave higher accumulations of N, P and K.
- Taxon
- bananat0
- Treatment
- seven days under controlled conditions, seven days in tunnel and 46 days in greenhousee0
- Outcome
- accumulations of N, P, Ke1
- Direction
- highere1
Not reportedComparator
Verbatim
t0“banana”
e0“seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse”
e1“higher accumulations of N, P, K”
Claim · model-written summary
The same acclimatization regime gave higher accumulations of Ca, Mg and S.
- Taxon
- bananat0
- Treatment
- seven days under controlled conditions, seven days in tunnel and 46 days in greenhousee0
- Outcome
- Ca, Mg, Se1
- Direction
- highere1
Not reportedComparator
Verbatim
t0“banana”
e0“seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse”
e1“higher accumulations of N, P, K, Ca, Mg, S”
Claim · model-written summary
The same acclimatization regime gave higher accumulations of Na, B and Cu.
- Taxon
- bananat0
- Treatment
- seven days under controlled conditions, seven days in tunnel and 46 days in greenhousee0
- Outcome
- Na, B, and Cue1
- Direction
- highere1
Not reportedComparator
Verbatim
t0“banana”
e0“seven days under controlled conditions, seven days in tunnel and 46 days in greenhouse”
e1“higher accumulations of N, P, K, Ca, Mg, S, Na, B, and Cu”
Claim · model-written summary
No significant differences were observed between inoculated and non-inoculated plantlets.
- Taxon
- bananat0
- Treatment
- inoculatede0
- Direction
- No significant differencese0
- Comparator
- non-inoculated plantletse0
Not reportedOutcome
Verbatim
t0“banana”
e0“No significant differences were observed between inoculated and non-inoculated plantlets”
Claim · model-written summary
Inoculation had a positive effect on the accumulation of N.
Not reportedComparator
Verbatim
t0“banana”
e0“Inoculations had positive and negative effects only on the accumulations of N and Cu, respectively”
Claim · model-written summary
Inoculation had a negative effect on the accumulation of Cu.
Not reportedComparator
Verbatim
t0“banana”
e0“Inoculations had positive and negative effects only on the accumulations of N and Cu, respectively”
Claim · model-written summary
The lowest thermal indices were observed for plantlets of treatment T5 (7 days in a controlled environment, 7 days in a tunnel and 46 days in a greenhouse).
Verbatim
t0“banana”
e0“The lowest thermal indices”
e1“T5 (7 days in a controlled environment + 7 days in a tunnel + 46 days in a greenhouse)”
Claim · model-written summary
The lowest thermal indices were observed for plantlets of treatment T1 (14 days in a shade tunnel and 46 days in a greenhouse).
Verbatim
t0“banana”
e0“The lowest thermal indices”
e1“T1 (14 days in a shade tunnel + 46 days in a greenhouse)”
The same questions in other papers
cultivation system · nutrient: content · MusaPositive and negative results
1 reporting no difference from an alternative
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inoculation · nutrient: content · MusaPositive and negative results
12 in the opposite direction
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See all 13 papers →cultivation system · growth · MusaResults agree
2 papers in the same direction as this paper
- positive
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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.