Seed germination, morphology and fruit phenology insight of Cylicomorpha solmsii (Urb.) Urb: a step towards sustainable restoration planning.

Autor: Na-Ah RF; Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon.; Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA., Ngwa NN; Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon., Tandzi LN; College of Technology, University of Bamenda, P.O. Box 39, Bambili, Cameroon., Tchatchouang EN; Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon.; Cameroon National Herbarium, P.O. Box 1601, Yaounde, Cameroon., Zerpa-Catanho DP; Institute of Sustainability, Energy and Environment, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA., Youmbi E; Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon., Tonfack LB; Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon. libert-brice.tonfack@facsciences-uy1.cm.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Jul 23; Vol. 14 (1), pp. 16995. Date of Electronic Publication: 2024 Jul 23.
DOI: 10.1038/s41598-024-66018-9
Abstrakt: Cylicomorpha solmsii (Urb.) Urb (Caricaceae) is a wild relative of domesticated Carica papaya native to the humid tropical forest of Cameroon. C. solmsii is becoming extinct due to rapid urbanization of its habitat. There is currently no restoration planning, no available data on seed germination, details on morphological description and fruit phenology. We investigated the effects of light and soil on seed germination, updated its morphological description and provided cues of its fruit phenology. In two series of experiments, a germination test was first conducted under light and dark conditions with three seed pre-treatments (scarification, drying and cold). Secondly, pre-treated seeds were sown in native soils of C. solmsii habitat collected at Eloumden I and II, two ex-situ and mixtures soil with sand. Qualitative and quantitative data were collected on different part of the plant and analyzed using R package version 4.3.2. Our findings showed that C. solmsii seeds can germinate only under light. The seeds manifested a physiological embryonic dormancy. The native soils showed the highest germination percentage and seedling establishment. The dioicy of C. solmsii was clearly described with incomplete staminate and pistillate unisexual flower whorls. C. solmsii was observed to produce fruits throughout the year at varying intensity. This information is a vital cue to species restoration and policy makers towards C. solmsii conservation.
(© 2024. The Author(s).)
Databáze: MEDLINE
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