Oil-tea (Camellia oleifera) is an important woody plant species producing edible oil in southern China, which shows complicated cytogenetics and intraspecific polyploidy. In order to explore the ploidy variation in interspecific hybridization of oil-tea Camellia, the ploidy of ‘Huashuo’, ‘Youza 2’ and 18 superior hybrids of ‘Youza 2’ × ‘Huashuo’ were identified by flow cytometry and chromosome counting. C.oleifera variety ‘Huashuo’ was hexaploid (2n=90), and Camellia yuhsienensis superior plant ‘Youza 2’ was aneuploid based on hexa...
