Many ornamental and crop species are normally propagated, stored and planted in the form of vegetative storage organs. It is therefore not surprising that, where such organs are produced in vitro, they often provide a convenient means of micropropagation and/or genotype storage. Characteristic, though small, storage structures can be induced to form in cultures of several plant species, for example:
Bulbils Amaryllis, hyacinth, lily, onion
Miniature tubers Potato, yams.
Protocorm formation as a method of propagation has been considered under Direct Embryogenesis.
Methods of obtaining storage organs vary according to the kind of tissue being cultured. Some storage organs formed in vitro can be planted ex vitro directly into the soil.
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