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Лесоведение, 2023, № 5, стр. 537-542

Reproductive phenology of Milicia excelsa, Antiaris toxicaria, and Pouteria adolfi-friedericii in South West Ethiopia

M. Nigatu a, *, Y. Mulatu a, M. A. Seid a

a Central Ethiopian Forestry Development Center
24536 code 1000 Addis Ababa, Ethiopia

* E-mail: marshetnigatu@gmail.com

Поступила в редакцию 7.05.2022
После доработки 30.11.2022
Принята к публикации 21.02.2023

Аннотация

Deforestation and degradation of natural forests pose a challenge for the forest sector in Ethiopia. Gathering scientific data on the reproductive biology of selected timber species has now become important to develop seed production areas and establish forest management regimes. In this regard, this study is aimed at determining the reproductive phenology of three indigenous tree species. The time of leafing, flowering, and fruiting in the three indigenous timber tree species has been recorded for three years in South West Ethiopia. This study was conducted in natural forests of the Benchi-Maji zone (Debub Bench district). We selected three prioritized species, Milicia excelsa, Antiaris toxicaria, and Pouteria adolfi-friedericii, based on the severity of their depletion and relative timber values in the area and in the country at large. Over 20 reproductively healthy, mature, and average mother trees >10 cm wide in diameter at breast height and with easily visible crowns, located at a distance of 100 m from one another, were selected out of each species and marked with marking ink. We conducted continuous observations and recorded data on leafing, flowering, and fruiting every 15 days (twice every month). The data was then analyzed using descriptive statistics. The result of this study indicates that the actual season when the seeds of Milicia excelsa are available for collection is once a year, from January to February. The results also showed that, for Antiaris toxicaria, the fruiting time is seasonal, and seeds become available for collection from early January up to the end of February. The fruiting time or the actual season when seeds of Pouteria adolfi-friedericii become available for collection is from May to June. Low-cost technologies (to establish seed production areas and domesticate the species) are recommended to be used for seed/seedling acquisition and distribution and preferable to reduce the destruction of the selected indigenous tree species.

Keywords: flowering, fruiting, phenology, seed production area, domestication.

Список литературы

  1. Anderson D.P., Nordheim E.V., Moermond T., Gone Z.B., Boesch C. Factors influencing tree phenology in Tai National Park, Cote d’Ivoire // Biotropica. 2005. V. 37. P. 631–641.

  2. Berg W.C.C., Bureau W., Sim M. Seed leaflet. 2002.

  3. Couralet C., Van Den Bulcke J., Ngoma L.M., Van Acker J., Beeckman H. Phenology in functional groups of Central African rainforest trees // J. Tropical Forest Science. 2013. V. 25. P. 361–374.

  4. Fobane J.L., Ndam E.N., Mbolo M. Population structure and natural regeneration of Allanblackia floribunda Oliv. (Clusiaceae) in a forest concession of East Cameroon // J. Biodiversity and Environmental Sciences. 2014. V. 4. P. 403–410.

  5. Frankie W., Baker G., Opler A. Comparative phenological studies of trees in tropical wet and dry forests in the lowlands of Cost Rica // J. Ecology. 1974. V. 62. P. 881–919.

  6. Garrison B.A., Koenig W.D., Knops J.M.H. Spatial synchrony and temporal patterns in acorn production of California black oaks // Proceedings of the Sixth Symposium on Oak Woodlands: Ecology and management. USDA Forest Service General Technical Report. 2008. PSW-GTR-217, Pacific Southwest Research USA. P. 343-356.

  7. Giday M., Asfaw Z., Woldu Z., Teklehaymanot T. Medicinal plant knowledge of the Bench ethnic group of Ethiopia: an ethnobotanical investigation // J. Ethnobiology and Ethnomedicine. 2009. V. 5. № 34. https://doi.org/10.1186/1746-4269-5-34

  8. Hirao A.S., Kudo G. The effect of segregation of flowering time on fi ne-scale spatial genetic structure in an alpine-snow bed herb Primula cuneifolia // Heredity. 2008. V. 100. № 4. P. 424–430.

  9. Mihretu M. Growth Performance of Some Indigenous and Exotic Tree Species in Southwestern Ethiopia. Addis Ababa: Ethiopian Institute of Agricultural Research, 2004. 47 p.

  10. Orwa C., Mutua A., Kindt R., Jamnadass R., Simons A. Agroforestry Database: a Tree Reference and Selection Guide. 2009. Version 4.

  11. Ravikumar K., Sankar R.V. Antiaris toxicaria (Moraceae) – a new distribution record to the Eastern Ghats // J. Threatened Taxa. 2009. V. 1. P. 58–59.

  12. Singh K.P., Kushwaha C.P. Diversity of flowering and fruiting phenology of trees in a tropical deciduous forest in India // Annals of Botany. 2006. V. 97. P. 265–276.

  13. Stevenson P.R., Castellanos M.C., Cortés A.I., Link A. Flowering patterns in a seasonal tropical lowland forest in western Amazonia // Biotropica. 2008. V. 40. P. 559–567.

  14. Tadesse W. Vegetation of the Yayu forest in Southwest Ethiopia: Impacts of human use and Implications for In situ Conservation of Wild Coffea arabica L. populations // Ecology and Development. 2003. Series No. 10. Center for Development Research, University of Bonn. 8 p.

  15. Weru S.M. Distribution, Utilization and Management of Prunus africana (Hook. f) in Gichugu Division, Kirinyaga District, Central Kenya Simon Mugwe Weru (BSc. Forestry A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master o. MSc. Thesis. Kenya, Kenyatta University, 2012. 112 p.

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