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Monitoring system and in situ conservation of endemic and threatened Beta patula Aiton populations in Madeira Region
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Advisor(s)
Abstract(s)
t Madeira Archipelago is a hotspot for crop
wild relatives (CWR) of crop cultures. Some of these
CWR are present in very specific environments, such
as, in Ponta de Sa˜o Lourenc¸o or Desertas Islands. One
such species is Beta patula Aiton, a Critically Endan gered species which belongs to the Gene Pool 1b of
cultivated beets. A continuous effort has been devel oped for its ex situ conservation through the storage of
accessions (ISOP2512 and ISOP1911) in the ISO Plexis GeneBank at the University of Madeira Simultaneously, a series of studies have been carried
out to understand the species’ ecogeographic and
ecological requirements, to validate populations’
boundaries and sizes, and to establish population
dynamics. This study includes a complete floristic
survey at the B. patula locations of, Desembar cadouro islet (DI) with 12 (DI1–DI12) sampling sites,
and Cha˜o islet (CI) with 3 (CI1–CI3). Several
Biodiversity indices were calculated for these loca tions. Plot DI3 exhibited the highest values for
Corrected Evenness (E0 = 0.77 ± 0.07), Shannon–
Weaver Diversity Index (H0 = 2.48 ± 0.12), and
Hill’s Index (N2 = 4.47 ± 0.72), with a total sum of
306 individuals of B. patula. The demographic status
of B. patula populations in DI and CI was determined
yearly between 2014 and 2018. The results show an
average population size of 16,906 and 2917 plants,
respectively. These data will be used for the estab lishment of a protocol to monitor and manage a
genetic reserve for B. patula and other CWR. By
doing so, our work will contribute to the implemen tation of the European genetic reserve network.
Description
Keywords
Beta patula Aiton populations Monitoring system Conservation Madeira (Portugal) . Escola Superior de Tecnologias e Gestão Faculdade de Ciências da Vida
Citation
Nóbrega, H., Freitas, G., Zavattieri, M. A., Ragonezi, C., Frese, L., & Carvalho, M. P. (2021). Monitoring system and in situ conservation of endemic and threatened Beta patula Aiton populations in Madeira Region. Genetic Resources and Crop Evolution, 68(3), 939-956. https://doi.org/10.1007/s10722-020-01035-x
Publisher
Springer