关键词: 甜樱桃, 甜樱桃, 实生繁殖, 变异系数

Abstract:

The research progresses of germplasms improvement and cultivars selection from biotechnology especially the genetic engineering and somatic cell hybridization in Citrus rootstocks at home and abroad at present were summarized in order to provide a solid basis for further study and development of Citrus rootstocks. Though genetic engineering started a little late, it gained a great development nowadays. Achievements has been gotten in raising novel Citrus rootstocks by genetic engineering methods such as Agrobacterium-mediated transformation，the method of possessed axillary bud transformation-identification of in vitro propagation, direction introduction of alien DNA and so on. For the use of somatic cell hybridization, a great number of hybridized cells were gotten, and many disease-resistant hybrid progeny groups were built by protoplast fusion. At the present time, the researches of biotechnology in Citrus rootstocks are just on the beginning, studies will be focused on the use of biotechnology in the resource diversity and germplasm improvement of Citrus rootstocks.