Abstract
Phyllonoma laticuspis leaves are used in Carrizal de Bravo, Guerrero, Mexico, to heal skin lesions such as injuries and smallpox sequelae and to treat diabetes mellitus type 2, and organic extracts of these leaves have been reported to exert antibacterial effects. High demand of P. laticuspis as a medicinal plant has decreased its natural populations, and propagation of the species has not yet been reported. Therefore, the purpose of this study was to assess the vegetative propagation of the species through cutting and air layering, as well as its sexual propagation in a preserved population. For this, concentrations of 1 000, 4 000 and 6 000 ppm of a commercial root enhancer, with indole butyric acid (IBA), and a control treatment without IBA, were applied to the cuttings and air layers. Germination was evaluated under light and dark conditions using lots of freshly collected seeds and lots of seeds that had been stored for three months at 4 °C or 24 ± 2 °C. All experiments were performed in a completely randomized design. The cuttings did not develop roots in any concentration, whereas 100 % of the air layers rooted, displaying vigorous roots in the presence of 4 000 ppm IBA, after four month of treatment application. Regarding germination, more than 60 % of the freshly collected seeds germinated, whereas less than 20 % of the seeds stored at 4 °C, and close to 50 % of the seeds stored at 24 ± 2 °C germinated under light and dark conditions. No significant differences were observed between light and dark conditions, so they were categorized as indifferent photoblastic seeds. The observed moisture content of 13.5 % and germination behaviour as the response to cold storage, suggest that the resultant seed quality was intermediate. P. laticuspis propagation for short-term foliage production can be carried out in air layers, in populations with a high density of adult plants as a source of plant material and for the restoration of disturbed areas, in the same locality. On the other hand, large-scale seedling production, medium-term foliage production and preservation of species variability can be achieved using seeds.
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Claims 10
Claim · model-written summary
Cuttings of P. laticuspis did not root at any tested IBA concentration.
- Taxon
- Phyllonoma laticuspisPhyllonoma laticuspist0
- Organ / stage
- cuttingse0
- Treatment
- any concentratione0
- Outcome
- did not develop rootse0
Verbatim
e0“The cuttings did not develop roots in any concentration”
t0“Phyllonoma laticuspis”
Claim · model-written summary
All air layers rooted, with vigorous roots at 4 000 ppm IBA after four months.
Verbatim
e0“100 % of the air layers rooted, displaying vigorous roots in the presence of 4 000 ppm IBA, after four month of treatment application”
t0“Phyllonoma laticuspis”
Claim · model-written summary
More than 60% of freshly collected seeds germinated.
- Taxon
- Phyllonoma laticuspisPhyllonoma laticuspist0
- Organ / stage
- freshly collected seedse0
- Outcome
- seeds germinatede0
- Value
- more than 60 %e0
Verbatim
e0“more than 60 % of the freshly collected seeds germinated”
t0“Phyllonoma laticuspis”
Claim · model-written summary
Less than 20% of seeds stored at 4 °C germinated.
Verbatim
e0“less than 20 % of the seeds stored at 4 °C”
t0“Phyllonoma laticuspis”
Claim · model-written summary
Close to 50% of seeds stored at 24 ± 2 °C germinated.
Verbatim
e0“close to 50 % of the seeds stored at 24 ± 2 °C germinated under light and dark conditions”
t0“Phyllonoma laticuspis”
Claim · model-written summary
Germination did not differ significantly between light and dark.
Verbatim
e0“No significant differences were observed between light and dark conditions”
t0“Phyllonoma laticuspis”
Claim · model-written summary
Seed moisture content was 13.5%.
- Taxon
- Phyllonoma laticuspisPhyllonoma laticuspist0
- Organ / stage
- seede1
- Outcome
- moisture contente0
- Value
- 13.5 %e0
Verbatim
e0“The observed moisture content of 13.5 %”
t0“Phyllonoma laticuspis”
e1“resultant seed quality was intermediate”
Claim · model-written summary
The authors inferred intermediate seed quality from moisture content and cold-storage germination.
- Taxon
- Phyllonoma laticuspisPhyllonoma laticuspist0
- Outcome
- seed quality was intermediatee0
- Qualifier
- response to cold storagee0
Verbatim
e0“germination behaviour as the response to cold storage, suggest that the resultant seed quality was intermediate”
t0“Phyllonoma laticuspis”
Claim · model-written summary
The authors recommend air layers for short-term foliage production and restoration in dense adult populations locally.
- Taxon
- P. laticuspisPhyllonoma laticuspise0
- Outcome
- propagation for short-term foliage production can be carried out in air layerse0
- Qualifier
- in populations with a high density of adult plantse0
Verbatim
e0“P. laticuspis propagation for short-term foliage production can be carried out in air layers, in populations with a high density of adult plants as a source of plant material and for the restoration of disturbed areas, in the same locality.”
Claim · model-written summary
The authors recommend seeds for large-scale seedling production, medium-term foliage production and preserving variability.
- Taxon
- Phyllonoma laticuspisPhyllonoma laticuspist0
- Outcome
- large-scale seedling production, medium-term foliage production and preservation of species variability can be achieved using seedse0
Verbatim
e0“large-scale seedling production, medium-term foliage production and preservation of species variability can be achieved using seeds.”
t0“Phyllonoma laticuspis”