College of Horticulture and Landscape Architecture,Southwest University,Chongqing 400715,China;
Key Laboratory for Flower Breeding of Yunnan Province,National Engineering Research Center for Ornamental Horticulture,Floriculture Research Institute,Yunnan Academy of Agricultural Sciences,Kunming 650200,China;
School of Agriculture,Yunnan University,Kunming 650504,China;
Gerbera hybrida; meiotic recombination; TOP3α; gene expression; ornamental breeding;