Advisor(s)
Abstract(s)
This is the first comprehensive investigation of the patterns of genetic diversity of Patellifolia
species. The main objective of our research work is to
determine Most Appropriate crop Wild relative Populations (MAWP) suited to conserve in situ wild
relatives of the sugar beet. Individual plant samples of
P. patellaris were collected at 26 and of P. procumbens/P. webbiana at seven sites and analysed with 24
and 22 microsatellite markers, respectively. On average 15 alleles per locus were found within the set of 581 P. patellaris and an average of 12 alleles per locus
in the set of 172 P. procumbens/P. webbiana individuals. The factorial analysis showed diversity patterns
which agree well with the geographic origin of the
samples. The genetic data suggest that P. patellaris
reproduces mainly by self-fertilisation while P.
procumbens/P. webbiana have the signature of outbreeders. The measure D was used to calculate the
genetic distance of each occurrence to the pooled
remaining occurrences, the complement. Occurrences
with either the lowest or the highest genetic distance to
the complement are particularly suited to conserve the
genetic diversity of the species. Eight occurrences of
P. patellaris, two of P. procumbens and one for P.
webbiana were determined according to this scheme,
proposed as MAWP and recommended for the establishment of genetic reserves.
Description
Keywords
Genetic diversity Differentiation In situ conservation Genetic resources Microsatellite marker Patellifolia . Faculdade de Ciências da Vida
Citation
Frese, L., Nachtigall, M., Iriondo, J. M., Teso, M. L. R., Duarte, M. C., & Carvalho, M. Â. A. P. (2019). Genetic diversity and differentiation in Patellifolia (Amaranthaceae) in the Macaronesian archipelagos and the Iberian Peninsula and implications for genetic conservation programmes. Genetic Resources and Crop Evolution, 66(1), 225-241.
Publisher
Springer Nature