Abstract
Callus cultures were established from the scutellum, scutellar node and radicle region of immature embryos of rye and octoploid triticale on modified Murashige-Skoog basal medium supplemented with various growth regulators. 2, 4-D, 2, 4, 5-T and 2, 4, 5-Cl, POP were found suitable for initiation and maintenance of callus cultures. Cytokinins had no or inhibitory effect on callus induction and growth. On basal medium containing 5 mg/l of 2,4,5-Cl3 POP, 16% of triticale and 17% of rye primary cultures exhibited shoot bud regeneration after 3–4 weeks. Transfer of such cultures to basal medium supplemented with zeatin or zeatin in combination with IAA further promoted shoot elongation and plantlet formation. Plantlets were rooted on basal medium containing 1 mg/l NAA and were eventually transferred to soil. Chlorophyll variants were observed in about 6% of triticale cultures.
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