Molecular and cytological characterization of the global Musa germplasm collection

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In the present study, flow-cytometric analysis of ploidy level were coupled with the genotyping platform based on SSR markers and analyzed 630 accessions of the genus Musa held at the ITC collection including 49 Reference DNA collection samples (, as well as 27 samples received from Hawaii to enlarge the representation of individual Musa subgroups, and 38 samples collected during the Bioversity International expedition to Indonesia (Sutanto et al. 2016). Altogether, 695 accessions were genotyped, including 327 diploids, 363 triploids and 5 tetraploids.

The extent of genetic diversity among all samples was evaluated using the Nei´s genetic distance coefficient calculation (Nei 1973) and subsequent cluster analysis was done using the Unweighted Pair Group Method with Arithmetic Mean (UPGMA; Michener and Sokal 1957). To enable joint analysis of all ploidy levels (2×, 3× and 4×) the genotypic data was converted into binary (coded by 1/0 = presence/absence) and analyzed as a dominant marker’s record (Weising et al. 2005). Dendrograms were constructed based on the results of UPGMA analysis and visualized in FigTree v1.4.0. The dissimilarity index threshold of 0.25 was used to assess the grouping of the accessions on the dendrogram. Bootstrap support for individual branches was calculated on 1000 replicates and values above 35% (0.35) were used to confirm the fundamental subclustering pattern.

See all accessions used in this study

Showing 40 of 571 accessions
Accession Name Pictures Accession number Species / Group SubSpecies / SubGroup Origin Collection Available for distribution
Ntie ITC0192 AAB subgr. Plantain Unknown ITC
Ubok Iba ITC0114 AAB subgr. Plantain Unknown ITC
Ihitisim ITC0121 AAB subgr. Plantain Unknown ITC
Daluyao ITC0034 AAB subgr. Plantain Philippines ITC
Big Ebanga ITC1129 AAB subgr. Plantain Unknown ITC
Njock Kon ITC1133 AAB subgr. Plantain Unknown ITC
Mena ITC0839 AA Unknown Papua New Guinea ITC
Schizocarpa ITC0599 schizocarpa Unknown Papua New Guinea ITC
Schizocarpa ITC0857 schizocarpa Unknown Papua New Guinea ITC
Agbagba ITC0111 AAB subgr. Plantain Unknown ITC
Musa velutina ITC0011 velutina subsp. velutina Unknown ITC
Diploide EMBRAPA 205
ITC1193 AA Unknown Brazil ITC
IRFA 905
ITC1267 AA Unknown Nigeria ITC
ITC1438 AA Unknown Vietnam ITC
Chuoi bom
ITC1685 AA Unknown Unknown ITC
ITC1692 AA Unknown Indonesia ITC
ITC1693 AA Unknown Indonesia ITC
ITC1694 AA Unknown Indonesia ITC
ITC1695 AA Unknown Unknown ITC
Lidi Bikittinggi
ITC1696 AA Unknown Indonesia ITC
ITC1698 AA Unknown Indonesia ITC
ITC1699 AA Unknown Indonesia ITC
Dingin Balige
ITC1707 AA Unknown Unknown ITC
Chuoi cau trang
ITC1717 AA Unknown Unknown ITC
ITC1761 AA Unknown India ITC
ITC0257 AA Unknown Unknown ITC
ITC0259 AA Unknown Unknown ITC
NBA 14
ITC0267 AA Unknown Unknown ITC
Niyarma Yik
ITC0269 AA Unknown Unknown ITC
Djum Tau
ITC0292 AA Unknown Indonesia ITC
ITC0299 AA Unknown Philippines ITC
Diploid Basilan
ITC0438 AA Unknown Philippines ITC
Morong Principe
ITC0445 AA Unknown Unknown ITC
Pu-te Wey
ITC0447 AA Unknown Malaysia ITC
Pisang Tongat
ITC0063 AA Unknown Unknown ITC
ITC0688 AA Unknown Indonesia ITC
Pisang Raja Udang
ITC0976 AA Unknown Unknown ITC
Pisang Sintok
ITC0982 AA Unknown Unknown ITC
Pisang Lemak Manis
ITC1183 AAA Unknown Unknown ITC
ITC1305 AAA Unknown Tanzania ITC