Abstract
Vermicompost humic acids (VHA) promote plants’ growth because they have similar effects with auxins. The aim of this research was to evaluate the effect of VHA in some physiological indicators in the micropropagation and acclimatization phase of banana clone Enano Guantanamero. Six concentrations were used (0, 10, 20, 30, 40 and 50 mg L-1) to evaluate in vitro the number of leaves, total chlorophyll content and chlorophyll a-b; also in the acclimatization phase, the plant height, stem diameter and number of leaves at three different times (transplant, 25 days and at the end of this phase-50 days) were determined. Root length and roots dry weight were evaluated at the end of the acclimatization. VHA applied improved total chlorophyll, chlorophyll a-b at concentrations of 20 and 50 mg L-1, but not the number of leaves. In the acclimatization stage, plants height at the end of this period (50 days) were higher with 10 mg L-1 (T1) VHA, the number of leaves increased at 40 mg L-1 (T4) and the stem diameter was higher at both concentrations. In the evaluation of roots length, there were no significant differences, but the number of leaves was higher at 10 and 40 mg L-1 (T1 and T4) and it decreased at 50 mg L-1 (T5); roots dry weight increased at 40 mg L-1 (T4). VHA promoted chlorophyll content under in vitro conditions, it reduced the period of acclimatization of banana clone Enano Guantanamero, led to a better growth of plants, and it saved time and resources. Key words: Acclimatization, humic acid, in vitro crop, Musa sp.
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Claims 10
Claim · model-written summary
VHA at 20 and 50 mg L-1 improved total chlorophyll and chlorophyll a-b in vitro.
- Taxon
- bananat0
- Treatment
- VHAe0
- Outcome
- total chlorophyll, chlorophyll a-be0
- Direction
- improvede0
- Value
- 20 and 50 mg L-1e0
Not reportedComparator
Verbatim
e0“VHA applied improved total chlorophyll, chlorophyll a-b at concentrations of 20 and 50 mg L-1”
t0“banana”
t1“banana”
Claim · model-written summary
VHA did not improve leaf number in vitro.
Not reportedComparator
Verbatim
e0“VHA applied improved total chlorophyll, chlorophyll a-b at concentrations of 20 and 50 mg L-1, but not the number of leaves”
t0“banana”
t1“banana”
Claim · model-written summary
At 50 days, plant height was higher with 10 mg L-1 VHA.
Not reportedComparator
Verbatim
e0“plants height at the end of this period (50 days) were higher with 10 mg L-1 (T1) VHA”
t0“banana”
t1“banana”
Claim · model-written summary
Leaf number increased with 40 mg L-1 VHA.
Not reportedComparator
Verbatim
e0“the number of leaves increased at 40 mg L-1 (T4)”
t0“banana”
t1“banana”
Claim · model-written summary
Stem diameter was higher at 10 and 40 mg L-1 VHA.
Not reportedComparator
Verbatim
e0“the stem diameter was higher at both concentrations”
t0“banana”
t1“banana”
Claim · model-written summary
Root length did not differ significantly.
Verbatim
e0“In the evaluation of roots length, there were no significant differences”
t0“banana”
t1“banana”
Claim · model-written summary
Leaf number was higher at 10 and 40 mg L-1 VHA during root evaluation.
Not reportedComparator
Verbatim
e0“the number of leaves was higher at 10 and 40 mg L-1 (T1 and T4)”
t0“banana”
t1“banana”
Claim · model-written summary
Leaf number decreased at 50 mg L-1 VHA.
Not reportedComparator
Verbatim
e0“the number of leaves was higher at 10 and 40 mg L-1 (T1 and T4) and it decreased at 50 mg L-1 (T5)”
t0“banana”
t1“banana”
Claim · model-written summary
Root dry weight increased at 40 mg L-1 VHA.
Not reportedComparator
Verbatim
e0“roots dry weight increased at 40 mg L-1 (T4)”
t0“banana”
t1“banana”
Claim · model-written summary
VHA reduced banana acclimatization time.
Not reportedComparator
Verbatim
e0“VHA promoted chlorophyll content under in vitro conditions, it reduced the period of acclimatization of banana clone Enano Guantanamero”
t0“banana”
t1“banana”
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