Abstract
The genus Plumeria, locally known as kalachuci, is a popular ornamental tree belonging to the Apocynaceae family. The University of the Philippines Los Baños (UPLB) maintains a collection of Plumeria trees scattered across its campus; however, the origin of these trees remains unclear due to a lack of proper documentation. This study conducted morphological characterization and pollen analysis to provide information for further research. Results revealed the presence of 2 Plumeria species in the campus. P. obtusa has a linear leaf shape with acute tips and revolute margins while P. rubra has a lanceolate leaf shape. Additionally, P. obtusa has a green peduncle while P. rubra has a peduncle ranging from red to dark red. In terms of floral traits, P. obtusa produces white flowers while P. rubra has flowers with a variety of colors including white, yellow, pink, and dark red. Pollen viability and pollen germinability analysis revealed that germinability varied significantly within and between species, whereas pollen viability remained similar for both. Both species exhibited high pollen viability observed through staining but low pollen germination. Furthermore, high pollen viability does not guarantee high germinability, as indicated by the weak correlation between these variables across species. To clarify the uncertain provenance of P. rubra variants, further research using molecular techniques and DNA markers for precise information is highly recommended.
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Claims 13
Claim · model-written summary
Two Plumeria species were present on campus.
PlumeriaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results revealed the presence of 2 Plumeria species in the campus.”
Claim · model-written summary
Plumeria obtusa had linear leaves with acute tips and revolute margins.
- Taxon
- P. obtusa
Plumeria obtusae0 - Organ / stage
- leafe0
- Outcome
- linear leaf shape with acute tips and revolute marginse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. obtusa has a linear leaf shape with acute tips and revolute margins”
Claim · model-written summary
Plumeria rubra had lanceolate leaves.
- Taxon
- P. rubra
Plumeria rubrae0 - Organ / stage
- leafe0
- Outcome
- lanceolate leaf shapee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. rubra has a lanceolate leaf shape”
Claim · model-written summary
Plumeria obtusa had a green peduncle.
- Taxon
- P. obtusaPlumeria obtusae0
- Organ / stage
- pedunclee0
- Outcome
- green pedunclee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. obtusa has a green peduncle”
Claim · model-written summary
Plumeria rubra had red to dark red peduncles.
- Taxon
- P. rubraPlumeria rubrae0
- Organ / stage
- pedunclee0
- Outcome
- peduncle ranging from red to dark rede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. rubra has a peduncle ranging from red to dark red”
Claim · model-written summary
Plumeria obtusa produced white flowers.
- Taxon
- P. obtusaPlumeria obtusae0
- Organ / stage
- flowerse0
- Outcome
- white flowerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. obtusa produces white flowers”
Claim · model-written summary
Plumeria rubra produced flowers in white, yellow, pink, and dark red.
- Taxon
- P. rubraPlumeria rubrae0
- Organ / stage
- flowerse0
- Outcome
- flowers with a variety of colors including white, yellow, pink, and dark rede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. rubra has flowers with a variety of colors including white, yellow, pink, and dark red”
Claim · model-written summary
Pollen germinability varied significantly within and between Plumeria species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germinability varied significantly within and between species”
t0“Plumeria”
Claim · model-written summary
Pollen viability was similar in both Plumeria species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pollen viability remained similar for both”
t0“Plumeria”
Claim · model-written summary
Both Plumeria species had high staining based pollen viability but low pollen germination.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both species exhibited high pollen viability observed through staining but low pollen germination.”
t0“Plumeria”
Claim · model-written summary
Both Plumeria species had low pollen germination.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both species exhibited high pollen viability observed through staining but low pollen germination.”
t0“Plumeria”
Claim · model-written summary
Pollen viability and germinability were weakly correlated across the Plumeria species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high pollen viability does not guarantee high germinability, as indicated by the weak correlation between these variables across species”
t0“Pollen Viability, and Germinability Evaluation of Two Plumeria Species”
Claim · model-written summary
The authors recommend molecular techniques and DNA markers to clarify the provenance of P. rubra variants.
- Taxon
- P. rubraPlumeria rubrae0
- Outcome
- further research using molecular techniques and DNA markerse0
- Qualifier
- uncertain provenancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To clarify the uncertain provenance of P. rubra variants, further research using molecular techniques and DNA markers for precise information is highly recommended.”