Facters affecting formation of somaclones of Aloe were studied at first. And then callus
was induced to produce variant by mutagen EMS. The variant was selected by selective
pressure HYP and it could resist low temperature. And the relative biochemical and
physiologic characteristic of cold-resisting of the HYP-resistant variant ,its regenerated
plantlet and the callus derived from the regenerated plantlet were studied. The resu...