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Assessment of the modes of pollen dispersal of Vernonia amygdalina Del. and Vernonia calvoana Hook
Assessment of the modes of pollen dispersal of Vernonia amygdalina Del. and Vernonia calvoana Hook
- Source :
- African Journal of Plant Science. 11:362-368
- Publication Year :
- 2017
- Publisher :
- Academic Journals, 2017.
-
Abstract
- The study of pollen dispersal and mode of fertilization of Vernonia amygdalina and Vernonia calvoana is a prerequisite to the understanding of genetic diversity and elaboration of improvement programs for the Vernonia genus. In this study, precise experimental designs were made for morphological and biological observations on Vernonia species capitulum in order to assess the distinctive effects of each of the three possible pollen transportation agents (insects, wind and rain water) on pollination. Results obtained show that the exclusive mode of pollen dispersal is entomophilous. Even though allogamy and autogamy are observed as two possible modes of fertilization in Vernonia spp., some arguments tend to favour allogamy. However, there is no clear cut position on the issue, hence the need for confirmation by further experimentation in controlled pollination. This study paves the way for the establishment of a genetic improvement program for this genus based on the results on pollen dispersal. Key words: Vernonia species, allogamy, autogamy, pollination agent.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Genetic diversity
biology
Pollination
Vernonia amygdalina
Allogamy
General Medicine
biology.organism_classification
medicine.disease_cause
Pollen dispersal
01 natural sciences
03 medical and health sciences
030104 developmental biology
Genus
Pollen
Botany
medicine
Biological dispersal
010606 plant biology & botany
Subjects
Details
- ISSN :
- 19960824
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- African Journal of Plant Science
- Accession number :
- edsair.doi...........1cbdfaca7222af84406d5e65033ed935
- Full Text :
- https://doi.org/10.5897/ajps2017.1550