This study examined translingual practices in two playdates of a Korean four-year-old boy (Theo) with a Korean boy and an American boy. The boys played a game called Candy Land. In both playdates, the boys’ naturally occurring English and Korean communication strategies were observed and analyzed based on Canagarajah’s (2013) four types of negotiation strategies: envoicing, recontextualization, interactional, and entextualization. They adapted and accommodated translingual practices in communicative situations using strategies such as body language, whispering, codemeshing, and codeswitching. Interviews were conducted with Theo to examine his understanding of his language as a user of Korean and English in the United States. Theo expressed his thoughts about language in metaphor, using his hands, and asserted that he needed English to have a sense of belonging and access to resources in his preschool.

Sweet potato has low regeneration capacity, which is a serious obstacle for the fruitful production of transgenic plants. Simple and rapid regeneration method from storage root explants of purple sweet potato (Ipomoea batatas L.) was investigated. The embryogenic callus was observed from 4 cultivars and its highest rate was induced at 1 μM 2,4-D after 5 weeks of culture. Result revealed that a low concentration of 2,4-D and low light intensity was important factors for embryogenic callus formation. After subculture on medium with 5 μM ABA for 4 days, subsequently, occurred the regeneration of shoots within 4 weeks when these embryogenic callus was transferred onto the MS hormone free medium. Regenerated shoots were developed into platelets, and grown normal plants in the greenhouse. We developed a simple and quickly protocol to regenerate plantlets in storage root explants of purple sweet potato. This regeneration system will facilitate tissue culture and gene transfer research of purple sweet potato.