A C-banded karyotype of mitotic chromosomes in diploid purple coneflower (<i>Echinacea purpurea</i> L.).

"Competing interests The authors declare that they have no competing interests."

"Funding This research was funded by two grants from Science and Technology Planning Project of Guangdong Province, China (2011B031700026, 2014B090904074). Availability of data and materialAll the data and material are of full availability. Authors’ contributionsWJ conducted most of the experiments especially the C-bands staining experiments and drawing the C-banded karyotype figure. QL helped in preparing slides for chromosome observation. XC was the previous conductor of the concerned work. YR helped in screening slides with high quality chromosome images. RC helped in preparing slides for chromosome observation. HW gave financial support. YY designed the experiments and prepared the manuscript. All authors read and approved the final manuscript. Competing interestsThe authors declare that they have no competing interests. Consent for publicationNot applicable (The study doesn’t involve human participants, human data, or human tissue). Ethics approval and consent to participateNot applicable (The study doesn’t involve human participants, human data, or human tissue)."