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Genetic Relatedness of Portuguese Rice Accessions from Diverse Origins as Assessed by Microsatellite Markers

^a ITQB/IBET, Quinta do Marquês, 2784-505 Oeiras, Portugal
^b CPBG, Tamil Nadu Agricultural Univ., Coimbatore 641003, India. M. Martins, Instituto Gulbenkian de Ciência, Apartado 14, P-2781-901, Oeiras, Portugal
^c ENMP Apartado 6, 7350-951 Elvas, Portugal
^d Univ. Lisboa, Fac. Ciências, Dep. Biologia Vegetal, 1749-016 Campo Grande, Lisboa Portugal

View larger version (28K): [in this window] [in a new window]   Figure 1. Dendrogram built from the simple sequence repeat data of 178 rice accessions of the working germplasm collection. Analyses were made by the unweighted pair group mean average method and were based on Lynch's coefficient. Bootstrap values (out of 100) are indicated at the main branch points. Subgroups in Group I (GI-1–GI-16) although not supported by bootstrap analyses were indicated for easier correlation with the list of accessions in Table 1. Names of the rice accessions refer to those in Table 1. Most accessions in Group I are japonicas, in GII are basmati, and in GIII are indicas.

View larger version (11K): [in this window] [in a new window]   Figure 2. Two-dimensional scaling resulting from principal component analysis (NTSYS-pc) of 178 accessions using genetic diversity data for 184 alleles at 24 simple sequence response loci. Circles indicate the three major clusters formed.