Inhibition of Somatic Embryogenesis in Orchardgrass by Endogenous Cytokinins | Zendy

Allan R. Wenck | Zendy; B. V. Conger | Zendy; Robert N. Trigiano | Zendy; Carl E. Sams | Zendy

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Inhibition of Somatic Embryogenesis in Orchardgrass by Endogenous Cytokinins

Author(s) -

Allan R. Wenck,

B. V. Conger,

Robert N. Trigiano,

Carl E. Sams

Publication year - 1988

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.88.4.990

Subject(s) - cytokinin , zeatin , somatic embryogenesis , biology , dactylis glomerata , riboside , genotype , botany , auxin , basal (medicine) , endogeny , embryogenesis , embryo , biochemistry , poaceae , microbiology and biotechnology , endocrinology , gene , insulin

Endogenous indoleacetic acid (IAA) and cytokinin concentrations were measured by high performance liquid chromatography in leaf sections of an orchardgrass (Dactylis glomerata L.) genotype which exhibited a high capacity for somatic embryogenesis in vitro and in two genotypes that did not exhibit this capacity. The nonembryogenic genotypes contained 3- to 4-fold higher concentrations of zeatin, zeatin riboside, dihydrozeatin, dihydrozeatin riboside, and total cytokinins than the embryogenic genotype. There were no significant differences in IAA concentrations between genotypes. Cytokinin concentrations between basal and distal sections of embryogenic genotype were not different, but the IAA concentration was significantly greater in basal sections. Somatic embryogenesis was inhibited in the embryogenic genotype by 0.001 micromolar exogenously added zeatin.

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