Embryogenic callus induction and plant regeneration of different genotypes of sweetpotato varieties and establishment of embryogenic suspension system of Fushu 604
Sixteen sweetpotato varieties,including Fushu 604,Fucai Potato 18,Fushu 7-6 etc.,were used as mate-rials to induce embryogenic calluses from stem tips and perform callus differentiation and regeneration experiments.The differences in callus induction rate,callus growth status,and plant regeneration rate among different genotypes were compared.The results showed significant differences in induction and regeneration rates of embryogenic cells among varieties.The variety of Fushu 604,which had high induction rates,good embryogenic callus status,and high differentiation regeneration rates,was selected by experiments.An embryogenic suspension system was estab-lished for this variety,and the growth of embryogenic suspension cells was measured to provide technical support for the genetic transformation of the elite sweetpotato variety Fushu 604.
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