Genetic variations of Narcissus tazetta and selected Narcissus cultivars based on the sequence analysis of nrITS and trnL-IS-trnF regions

Narcissus tazetta var. chinensis (N. taz. chi.) accessions collected from the coastal areas of China, Korea, and Japan were compared with lower ranks taz.) Italy to study genetic variations several morphologically similar cultivars available in trade. Sequences internal transcribed spacer (ITS) regions nuclear ribosomal DNA (nrITS) dendrogram chloroplast trnL-IS-trnF intergeneric spacer-gene (cpIS) analyzed by maximum likelihood (ML) posterior probability using STRUCTURE program. All single flower form N. chi. are very closely related based on sequence analyses cpIS nrITS, regardless whether it is a or double flower. Single not those including subsp. italicus. The any other commercially cultivars. correlation between ML analysis for generally consistent most accessions. However, significant differences clustering nrITS observed, suggesting that considered more valuable than variations. nomenclature should be examined further.