Abstract
Tartary buckwheat is an ancient annual dicotyledonous herb, which is widely distributed around the world, specifically in the high altitude area of southwestern China and in the hill region of Himalayan. The plantlet regeneration of tartary buckwheat via somatic embryogenesis or multiple shoot induction was investigated in two different tartary buckwheats, Yuanzi and Xichang. The regeneration ability of Yuanzi was better than Xichang tartary buckwheat, and the hypocotyls were better than cotyledons as tartary buckwheat plantlet regeneration explants via somatic embryogenesis. The most suitable medium for callus induction was Murashige and Skoog basal medium added 2 mg/L 2, 4- dichlorophenoxyacetic acid and 1 mg/L Kinetin, which could reach up to 98.96% callus induction percentage. The plantlet regeneration percentage from callus of tartary buckwheat could reach up to 55.77%, which induced on 2.0 mg/L Benzyladenine and 1.0 mg/L KT in MS basal medium. In addition, maximum of multiple shoot induction percentage was 69.05%, which was observed in case of Yuanzi tartary buckwheat in MS basal medium with added 3.0 mg/L 6-BA and 1.0 mg/L Thidiazuron. Roots induction of regenerated plants were achieved on 1/2 MS basal medium with added 1mg/L Indole-3-Butytric acid, which has 75% survival after transferred regenerated plants to soil under field conditions.
Keywords: Multiple shoot formation, Plant growth regulators, Regeneration, Somatic embryogenesis, Tartary buckwheat, Tissue cultures.
Graphical Abstract
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