Article | 12. 2015 Vol. 33, Issue. 6
The Selection of Domestically Bred Cultivars for Spray-type Chrysanthemum Transformation

Molecular breeding Division, National Academy of Agricultural Science, Rural Development Administration1
Department of Seed Service, The Foundation of Agri. Tech. Commercialization and Transfer2

2015.12. 941:954


To select suitable spray chrysanthemum cultivars for Agrobacterium-mediated transformation, thirty-nine (39) spray cultivars bred in the National Institutes of Korea and a standard cultivar Jinba from Japan were collected and tested for regeneration rate and Agrobacterium infection assays. MS medium with 0.5 mg・L-1 IAA and 1.0 mg・L-1 BAP was used for shoot regeneration from leaf disks and internodes. The shoot regeneration rate in leaf disks was the highest in cultivar BRM, followed by cultivars VS, WW and YTM. The cultivar JB (Jinba) used as a transformation material in previous reports ranked similarly to cultivars PK and SPP. In shoot regeneration from internodes, the shoot regeneration rate was the highest for cultivar PA, followed by cultivar WW. The infection rate of leaves and internodes of 40 chrysanthemum cultivars with agrobacterium was investigated. Cultivars WPP, YNW, VS, PP, WW, FA, PA and YMN showed the highest infection levels in leaves, whereas cultivars WPP, PA, PK and YNW had the highest infection levels in internodes. Considering all of these results, cultivars VS and WW were the most appropriate for gene transformation of chrysanthemum using leaves, while cultivar PA was for internodes.

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