PMID- 26010356 OWN - NLM STAT- MEDLINE DCOM- 20160126 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 5 DP - 2015 TI - The application of fluorescence in situ hybridization in different ploidy levels cross-breeding of lily. PG - e0126899 LID - 10.1371/journal.pone.0126899 [doi] LID - e0126899 AB - 21 crossing were conducted between Asiatic Lily with different ploidy levels, the results showed that the interploidy hybridization between diploid and tetraploid lilies was not as successful as intraploidy hybridization. Regardless of male sterility, triploid lilies could be used as female parents in the hybridization which the progenies were aneuploidy. 3xx4x crosses could be cultured more successfully than 3xx2x crosses. 45S rDNA was mapped on the chromosomes of seven Lilium species and their progenies using fluorescence in situ hybridization (FISH). FISH revealed six to sixteen 45S rDNA gene loci, and normally the sites were not in pairs. The asymmetry indexes of LA (Longiflorum hybrids x Asiatic hybrids) hybrids was higher than Asiatic hybrids, the evolution degree was LA hybrids > Asiatic hybrids. 45S rDNA distributed variably on chromosome 1-10 and 12 among Asiatic hybrids. Chromosome 1 had invariable sites of 45S rDNA in all Asiatic hybrids, which could be considered as the characteristic of Asiatic hybrids. LA hybrid 'Freya' had two sites of 45S rDNA on one homologous chromosome 5, and also it could be found in the progenies. The karyotype and fluorescence in situ hybridization with 45S rDNA as probe were applied to identify the different genotypes of 9 hybrids. Typical chromosomes with parental signal sites could be observed in all the genotypes of hybrids, it was confirmed that all the hybrids were true. FAU - Wang, Qing AU - Wang Q AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. FAU - Wang, Jingmao AU - Wang J AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. FAU - Zhang, Yiying AU - Zhang Y AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. FAU - Zhang, Yue AU - Zhang Y AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. FAU - Xu, Shunchao AU - Xu S AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. FAU - Lu, Yingmin AU - Lu Y AD - College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150526 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (DNA Probes) RN - 0 (DNA, Ribosomal) SB - IM MH - *Breeding MH - Chromosomes, Plant/genetics MH - Crosses, Genetic MH - DNA Probes/metabolism MH - DNA, Ribosomal/genetics MH - Hybridization, Genetic MH - In Situ Hybridization, Fluorescence/*methods MH - Karyotyping MH - Lilium/*genetics MH - *Ploidies PMC - PMC4444012 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/05/27 06:00 MHDA- 2016/01/27 06:00 PMCR- 2015/05/26 CRDT- 2015/05/27 06:00 PHST- 2014/11/16 00:00 [received] PHST- 2015/04/08 00:00 [accepted] PHST- 2015/05/27 06:00 [entrez] PHST- 2015/05/27 06:00 [pubmed] PHST- 2016/01/27 06:00 [medline] PHST- 2015/05/26 00:00 [pmc-release] AID - PONE-D-14-51566 [pii] AID - 10.1371/journal.pone.0126899 [doi] PST - epublish SO - PLoS One. 2015 May 26;10(5):e0126899. doi: 10.1371/journal.pone.0126899. eCollection 2015.