Efficient callus induction and plant regeneration from filaments with anther in lily (Lilium longiflorum Thunb.) |
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Authors: | A-M Arzate-Fernández T Nakazaki Y Okumoto T Tanisaka |
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Institution: | (1) Laboratory of Plant Breeding, Faculty of Agriculture, Kyoto University, Kyoto 606-01, Japan Fax no.: +81-75-753-6069 E-mail: amaury@kais.kais.kyoto-u.ac.jp., JP |
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Abstract: | Bulb scale propagation makes it difficult to obtain a large number of bulblets from disease-free stocks in a short time.
The establishment of improved micropropagation procedures by in vitro culture is therefore desirable. Easter lily (Lilium longiflorum Thunb.) filaments with and without anther were excised and cultured in vitro with different media and culture conditions.
In cultures of filaments with anther, callus developed and led to bulb, shoot, and root formation, whereas in cultures of
filaments lacking anther, callus development did not occur. Among the various media tested, the B5 medium combined with darkness
and the N6 medium combined with darkness or light, both supplemented with 9% sucrose, proved to be superior. A total of 1260
plants were regenerated from callus, acclimatized under a mist, and transferred to the greenhouse with a 100% success rate.
No morphological abnormalities were observed among plants regenerated from filament-derived callus and all plants displayed
isozyme banding patterns identical to the original cultivar. Chromosome observations revealed that all callus-regenerated
plantlets tested were diploid (2n=24). The results suggest that in vitro culture of filaments with anther can be cultured
for mass propagation.
Received: 5 February 1997 / Revision received: 12 May 1997 / Accepted: 2 June 1997 |
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Keywords: | Anther-enriched culture media Isozymes Lilium longiflorum Thunb Lily propagation Somaclonal uniformity |
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