Storage and pre-sowing treatment of recalcitrant seeds of Africa sandalwood (Osyris lanceolata)

Mwang'ingo, P.L.; Teklehaimanot, Z.; Maliondo, S. M. S.; Msanga, H. P.

doi:10.15258/sst.2004.32.2.24

Cited by 8 publications

(4 citation statements)

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“…acuminata and Aphloia theiformis (Vahl) Benn. [ 37 ]. As hosts of hemiparasites differ geographically [ 23 , 63 ], it is also necessary to explore if this is due to their adaptation to local flora or because they are generalist plants.…”

Section: Results Of Searchmentioning

confidence: 99%

Knowledge Gaps in Taxonomy, Ecology, Population Distribution Drivers and Genetic Diversity of African Sandalwood (Osyris lanceolata Hochst. & Steud.): A Scoping Review for Conservation

Mugula

Kiboi

Kanya

et al. 2021

Plants

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The increasing demand for ornamental, cosmetic and pharmaceutical products is driving exploitation of plant species globally. Sub-Saharan Africa harbours unique and valuable plant resources and is now a target of plant resource depletion. African Sandalwood (Osyris lanceolata), a multi-purpose and drought-tolerant species, has seen increased exploitation for the last thirty years and is now declared endangered. Initiatives to conserve O. lanceolata are not yet successful in Africa due to poor understanding of the species. This review surveys relevant research on the ecology, taxonomy, population dynamics, genetic diversity and ethnobotany of O. lanceolata, and highlights gaps in the literature for further research. A scoping review of grey literature, scholarly papers and reports was applied with pre-determined criteria to screen relevant information. Review findings indicate O. lanceolata is a globally distributed species with no identified center of origin. In Africa, it ranges from Algeria to Ethiopia and south to South Africa; in Europe it occurs in the Iberian Peninsula and Balearic Islands; in Asia from India to China, and also on Socotra. The species has a confusing taxonomy, with unresolved issues in nomenclature, country range distribution, extensive synonymisation and variation in growth form (shrub or tree). The species population is reported to be declining in Africa, but information on population dynamics across its entire range of distribution is anecdotal. Additionally, ecological factors influencing spatial distribution and survival of the species remain unknown. A variety of uses are reported for O. lanceolata globally, including: cultural; medicinal and food; dye; perfumery; timber; ethnoveterinary and phytoremediation. Key research areas and implications for conservation of O. lanceolata in Sub-Saharan Africa are proposed.

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Section: Results Of Searchmentioning

confidence: 99%

Knowledge Gaps in Taxonomy, Ecology, Population Distribution Drivers and Genetic Diversity of African Sandalwood (Osyris lanceolata Hochst. & Steud.): A Scoping Review for Conservation

Mugula

Kiboi

Kanya

et al. 2021

Plants

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“…We have been unable to find any data on seed storage behaviour for Loranthaceae globally, whilst the available information for Santalaceae is only marginally better. Within Santalaceae, many species are intermediate (Thomson 2006), while Osyris lanceolata is recalcitrant (Mwang'ingo et al 2004).…”

Section: Future Directionsmentioning

confidence: 99%

Can seed banking assist in conserving the highly endemic New Zealand indigenous flora?

Wyse,

Carlin,

Etherington

et al. 2023

Pacific Conserv. Biol.

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Context Globally, plant species are facing numerous threats; an issue particularly acute for island floras, which often exhibit high levels of endemism. Ex situ conservation in seed banks is an important tool for plant conservation. However not all species’ seeds can be stored in conventional seed banks. Data on seed storage behaviour are therefore vital for conservation decision making. Aims To review available seed storage information for the New Zealand (NZ) indigenous seed plant flora, 86% of which are endemic. Methods We compiled seed storage information for the NZ flora from databases and existing literature, and used boosted regression trees models to investigate predictors of seed storage behaviour for NZ woody plants. We used existing global models to predict the likely storage behaviour for the NZ woody flora where this was unknown, to examine the overall contribution that conventional seed banking could make towards NZ plant conservation. Key results Data were available for 412 of 1823 seed plants, of which 83% produced orthodox seeds that can be stored in a conventional seed bank. Of the woody flora, the incidence of non-orthodox seeds was positively correlated with seed mass, plant height, biotic dispersal, and habitat diurnal temperature range. Eighty-one percent of the woody flora are predicted to produce orthodox seeds. Conclusions and implications Conventional seed banking is likely to be suitable for a high proportion of the NZ flora. However, work is required to gain further seed storage behaviour data for NZ species, and to develop protocols for alternative ex situ conservation strategies for non-orthodox species, especially those facing in situ conservation threats.

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“…A study by on the storage and pre-sowing treatments on seed germination demonstrated that the testa covering the embryo plays a significant role in limiting germination by restricting gas and water entry and also acts as a mechanical barrier to embryo growth. However, complete removal of the testa and soaking the zygotic embryo in hot water enhanced seed germination by 66.5%, shortened the time to seedling emergence and promoted early seedling growth (Mwang'ingo et al, 2004). Stem cuttings (8-10 cm long with 3-4 leaves from young trees or seedlings) could be induced to root with a maximum of 15% rooting when dipped first in a fungicide (Bavistin) for 5 min, then in 1% indole-3-butyric acid (IBA) for 6 h, but "this concentration could be increased to 32.5% when 75% of the original leaves were left intact" (Giathi et al, 2011).…”

Section: Propagation and Conservationmentioning

confidence: 99%

African Sandalwood or Nepalese Sandalwood: a Brief Synthesis

SILVA¹,

Kher

Soner

et al. 2016

Not Sci Biol

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African sandalwood or East African sandalwood (Osyris lanceolata Hochst. & Steud.; Santalaceae), also known as Nepalese sandalwood (Osyris wightiana var. rotundifolia P.C. Tam), is a hemi-parasitic tree known for its fragrant wood. The essential oil is extracted from the root bark for the perfume industry and different parts of the tree have various medicinal uses. African sandalwood contains an array of phytochemicals such as dihydro-β-agarofuran polyesters, agarofuranases, polyesters, other sesquiterpenes and bisabolanes. This mini-review focuses on the general biology, traditional uses, phytochemical properties, propagation for conservation, and hemiparasitism of O. lanceolata.

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Storage and pre-sowing treatment of recalcitrant seeds of Africa sandalwood (Osyris lanceolata)

Cited by 8 publications

References 0 publications

Knowledge Gaps in Taxonomy, Ecology, Population Distribution Drivers and Genetic Diversity of African Sandalwood (Osyris lanceolata Hochst. & Steud.): A Scoping Review for Conservation

Knowledge Gaps in Taxonomy, Ecology, Population Distribution Drivers and Genetic Diversity of African Sandalwood (Osyris lanceolata Hochst. & Steud.): A Scoping Review for Conservation

Can seed banking assist in conserving the highly endemic New Zealand indigenous flora?

African Sandalwood or Nepalese Sandalwood: a Brief Synthesis

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