In vitro regeneration of cereals based on multiple shoot induction from mature embryos in response to thidiazuron

• Published in: Plant cell, tissue and organ culture Vol. 85; no. 1; pp. 63 - 73
• Main Authors: Ganeshan, Seedhabadee, Chodaparambil, Sanjay V, Båga, Monica, Fowler, D. Brian, Hucl, Pierre, Rossnagel, Brian G, Chibbar, Ravindra N
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : Springer Netherlands 01.04.2006; Springer
• Subjects: Avena sativa; barley; benzyladenine; Biological and medical sciences; Biotechnology; culture media; embryo (plant); embryo culture; Eukaryotic cell cultures; Fundamental and applied biological sciences. Psychology; Hordeum vulgare; in vitro regeneration; Methods. Procedures. Technologies; Miscellaneous; oats; Plant cells and fungal cells; plant growth substances; shoots; spring wheat; thidiazuron; tissue culture; triticale; Triticum aestivum; Triticum turgidum subsp. durum; winter wheat; Monocotyledones; Embryo; Vegetals; Oat; Hordeum vulgare; cereal tissue culture; Induction; Tissue culture; triticale; barley; In vitro; Regeneration; Gramineae; Angiospermae; Triticosecale; Spermatophyta; wheat; Shoot
• ISSN: 0167-6857; 1573-5044
• DOI: 10.1007/s11240-005-9049-z

The in vitro competency of mature cereal embryos (winter, spring and durum wheats, oat, barley and triticale) was assessed for direct multiple shoot production on culture media containing the plant growth regulators, thidiazuron (TDZ) and/or 6-benzylaminopurine (BAP). Mature embryos of CDC Dancer oat showed the best response, with 69 shoots per explant on culture medium containing a combination of 4.5 μM TDZ and 4.4 μM BAP. TDZ alone induced about 16 shoots per explant from the oat. Among the wheat genotypes, durum wheat showed the most number of shoots (35) per explant on culture medium containing 4.5 μM of TDZ and 4.4 μM of BAP. With TDZ alone, shoot regeneration for durum wheat ranged from 27-32 shoots per explant. The regeneration frequency from the three winter wheat genotypes ranged from 11-25 shoots per explant and was highest on culture medium containing 9.1 μM TDZ and 4.4 μM BAP. The latter culture medium was also effective for a triticale genotype, inducing 34 shoots per explant. The regeneration from mature embryos of barley genotypes ranged from 5-9 shoots per explant. The mature embryos of all the cereals tested could be used for in vitro regeneration with TDZ and TDZ+BAP combinations.