Related Experiment Video
Updated: Jul 17, 2026

A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica
Published on: February 20, 2012
Phylogenetic relationships and possible hybrid origin of Lycoris species (Amaryllidaceae) revealed by its sequences
Shude Shi1, Yingxiong Qiu, Enxiang Li
1Laboratory of Systematic and Evolutionary Botany and Biodiversity, College of Life Sciences, Zhejiang University, Hangzhou, 310058, PR China.
Abstract:
To examine interspecific relationships and test the hypothesis of hybrid origin within Lycoris species, this study used data from parsimony analyses with nuclear ITS sequences for 19 taxa representing 14 species of Lycoris and two outgroup taxa. The ITS sequences resolved three infrageneric clades. One clade included L. chinensis, L. longituba, L. longituba var. flava, L. anhuiensis, and L. aurea; the second one consisted of L. sprengeri, L. radiata, L. radiata var. radiata, L. radiata var. pumila, L. haywardii, L. rosea, L. sanguinea var. sanguinea, and L. sanguinea var. koreana; and the third included L. caldwellii, L. straminea, L. albiflora, L. flavescens, and two hybrids. The results strongly support the hypothesis that L. straminea originated from hybridization between L. chinensis and L. radiata var. pumila, and the allotriploid L. caldwellii and L. albiflora derived from hybridization between L. chinensis and L. sprengeri. As nucleotide additivity was observed in the artificial hybrids and several presumed hybrids, the likelihood of hybrid origin of Lycoris species is supported.
Related Concept Videos
Phylogeny
Phylogenetic Trees
Hybrid Zones
Evolutionary Relationships through Genome Comparisons
Synteny and Evolution
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
Microbial Phylogeny

