Genetika 2016 Volume 48, Issue 2, Pages: 729-742
https://doi.org/10.2298/GENSR1602729M
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Genetic diversity of common bean accessions from former Yugoslav Republic of Macedonia as revealed by molecular and morphological markers
Maras Marko (Agricultural Institute of Slovenia, Ljubljana, Slovenia)
Ibusoska Afrodita (Institute of Agriculture, Skopje, FYR of Macedonia)
Kratovalieva Suzana (Institute of Agriculture, Skopje, FYR of Macedonia)
Agić Rukie (Faculty of Agricultural Sciences and Food, Skopje, FYR of Macedonia)
Šuštar-Vozlič Jelka (Agricultural Institute of Slovenia, Ljubljana, Slovenia)
Meglič Vladimir (Agricultural Institute of Slovenia, Ljubljana, Slovenia)
Cultivation of common bean has a long tradition in the Former Yugoslav
Republic of Macedonia (FYROM) and is still nowadays important part of the
human diet. In a study reported here 71 accessions from the FYROM were
assessed for genetic diversity with the aim to provide information on genetic
structure of Macedonian common bean germplasm and to depict its
peculiarities. A total of 71 accessions were assessed using 13 microsatellite
and 16 morphological markers. The average number of alleles per
microsatellite was 5.8, and ranged from three to 16 alleles. High capacity of
selected markers for distinguishing genotypes was identified by the
calculation of a very low value of probability of identity. The relationship
among 71 studied accessions was assessed by hierarchical cluster analysis. A
very clear separation of accessions into two groups was observed in the UPGMA
dendrogram. The larger represented Andean gene pool and contained 40
accessions (56% of total), while the other 31 accessions (44% of total)
composed Mesoamerican gene pool. The two groups were successfully
discriminated by eight morphological traits. Within the larger Andean cluster
in the UPGMA dendrogram a sub-group of 16 climbing accessions was separated
from 24 bush accessions. The absence of the string in the pods of the
climbers suggests that this sub-group comprises snap beans grown primarily
for their fresh pods. There were eight morphological traits in total that
distinguished the two Andean sub-groups. Assessment of genetic relationship
among accessions, their classification into respective gene pool and
identification of morphological peculiarities provided valuable information
for the management of plant gene bank and Macedonian bean breeding program.
Keywords: Phaseolus vulgaris L., landraces, diversity, microsatellite markers, morphological traits