ISSN:
1432-203X
Keywords:
Key words Chinese cabbage (Brassica campestris L. ssp. pekinensis)
;
Genotype
;
Cotyledon culture
;
AgNO3
;
Ethylene
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Medium conditions for reliable shoot regeneration from cotyledonary explants of Chinese cabbage were examined. Maximum shoot regeneration was obtained in the presence of 5 mg/l BA and 0.5 mg/l NAA. Shoot induction was further improved by the addition of AgNO3 as well as higher concentrations (1.2–1.6%) of agar in the regeneration medium. When 123 genotypes were tested, a large variation in regeneration frequency was observed, ranging from 95% to 0%. Shoot regeneration frequency was not related to origin and days to maturity of the genotypes. Ethylene production from cultured explants seemed to play an important role in shoot regeneration. Explants of highly responsive genotypes or if cultured on the medium solidified with a higher concentration of agar generally showed low levels of ethylene production. However, AgNO3, which also enhanced shoot induction, resulted in an increase in ethylene production. The possible interaction between ethylene and shoot regeneration is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002990050482
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