Genetic evidence of stable northward extension of Pinus thunbergii Parl. forests in the Democratic People’s Republic of Korea

Genetic Resources and Crop Evolution - Japanese black pine (Pinus thunbergii Parl.) with high salt tolerance may be an important constitutive element sustaining terrestrial ecosystem by playing a...     

Molecular distinction among mulberry (Morus spp.) species and varieties cultivated in the Democratic People’s Republic of Korea

Mulberry (Morus spp.) is a cross-pollinating and highly hybridized plant of which productivity are greatly varied in different varieties. Accurate distinction among mulberry varieties and understanding of phylogenetic relationship among them would be crucial for the development of sericulture. We have analysed molecular distinction among four mulberry species and varieties cultivated in DPR Korea by using nuclear ribosomal internal transcribed spacer (ITS) sequences and inter simple sequence repeat (ISSR) markers. ITS sequences doesn’t represent a remarkable interspecific distinction among four mulberry species used in our study, suggesting that it could not be employed to identify them. ISSR analysis using 16 random primers generated 158 different markers ranging from 100 to 4000 bp in size. The results showed the inter-specific genetic variation (55.34%) was slightly higher than intra-specific genetic variation (44.66%), with comparatively low average number of migrants per generation (Nm) among populations (0.3886). Using ISSR primers selected in this study, in the future, the suitable breeding strategy might be established in raising of elite mulberry varieties on the basis of interspecific hybridization.

     

Identification of new stock [Matthiola incana (L.) R. Br] cultivars with high fertility through morphological and molecular markers

Genetic Resources and Crop Evolution - Garden stock [Matthiola incana (L.) R. Br.] is a commercially important horticultural crop owing to its ornamental effect. There are different stock cultivars...