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Studies on differentiation potential and chromosome stability of embryogenic callus in subcultures of Picea meyeri Rehd.et Wils.

YANG Jin ling 1,GUI Yao lin 2,GUO Zhong chen 2 (1.Institute of Materia Medica,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100050,China) (2.Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China)  
Embryogenic callus of Picea meyeri Rehd.et Wils.cultured on MS+2,4 D 1 mg/L+KT 1 mg/L remained high growth rate and differential ability through 3 year subcultures.There were variations in number of chromosomes in embryogenic callus cells.But the number of chromosomes in root tip cells of regenerated plantlets was relatively stable (2n=28).
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