Changes of Endogenous Hormone in Apple Rootstock During Vitrification in vitro

doi:10.3321/j.issn:1000-7091.1995.03.004

Abstract

Abstract: Changes of endogenous hormone in leaves and shoot tips in propagation of Maius pumila were determined by HPLC. The results showed that the contents of GA₃, IAA and ABA were very low in vitrified leaves and shoot tips , but CTK contents increased significantly. When plant vitrified heavily CTK contents became very low. During culture period the contents of GA₃ and IAA in leaves decresed and CTK contents increased, meanwhile the rate of GA₃/CTK,IAA/CTK dropped sharply, about 5 - 10 days later the symptom of vitrication occured. Suppling higher concentration of BA in culture medium caused leaves vitrified and led to GA₃ and IAA in leaves dropping. It is concluded that the contents of GA₃,IAA and CTK and the rate of GA₃/CTK, IAA/CTK was correlated with the Vitrification of apple rootstocks in vitro.

Key words: Apple rootstock, Vitrification, Endogenous hormone, GA₃, IAA, CTK

CLC Number:

S661.101

Niu Zimian, Wang Xianping, Dai Guilin, Chen Shuangying, Zhang Deming. Changes of Endogenous Hormone in Apple Rootstock During Vitrification in vitro[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(3): 15-19. doi: 10.3321/j.issn:1000-7091.1995.03.004.

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