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A simple, rapid protocol for adventitious shoot development from mature cotyledons of glycine max cv bragg

  • Plant Cellular and Development Biology
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Summary

Mature soybean cotyledons (Maturity group VII) were cultured on modified MS containing 0–2.5 μM indole-butyric acid (IBA); 0–10 μM 6-benzylaminopurine (BAP) and 0.7% agar. Embryonic axes of explants were removed prior to culture initiation and cultures were incubated at 24°C with 45–50 μE. s−1.M−2 of mixed irradiance with 16 h photoperiod. Shoot proliferation occurred at 0–2.5 μM IBA and 5–10 μM BAP, while in the presence of 2.5 μM IBA alone, only roots developed. Abnormal shoots were produced with 2.5 μM IBA and 5–7.5 μM thidiazuron. Adventitious shoot development started 7–14 d after culture initiation in the region where the embryonic axis was previously attached to the cotyledon and shoots were visible within 28 days. The presence of the embryonic axis inhibited shoot morphogenesis. The shoots were rooted on half strength MS inorganic salts plus vitamins, 2% sucrose, 0.5 μM NAA acid or 2.5–5 μM IBA, or 5–10 μM IAA, and 0.7% agar. Rooted plants were acclimatized under a mist in the greenhouse. This simple, rapid,in vitro adventitious shoot development protocol could be adapted for transformation/regeneration studies in soybean.

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Authors and Affiliations

  1. Cornell University, USDA-ARS, Appalachian Fruit Research Station, Route 2, Box 45, 25430, Kearneysville, West Virginia

    Seth Mante, Ralph Scorza & John Cordts

Authors
  1. Seth Mante
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  2. Ralph Scorza
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  3. John Cordts
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Additional information

Trade and company names are used in the publication solely to provide specific information. Mention of a trade or company name does not constitute a warranty or an endorsement by the U.S. Department of Agriculture to the exclusion of other products or organizations not mentioned.

Note Added in Proof Since submission of this manuscript, production of transgenic soybean plants has been reported utilizing cotyledons excised from germinated seed. Hinchee, M. A. W.; Connor-Ward, D. V.; Newell, C. A.; McDonnell, R. E.; Sato, S. J.; Gasser, C. S.; Fischoff, D. A.; Re, D. B.; Fraley, R. T.; Horsch, R. B. Production of transgenic soybean plants usingAgrobacterium-mediated DNA transfer. Bio/Technology 6:915–922; 1988.

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Mante, S., Scorza, R. & Cordts, J. A simple, rapid protocol for adventitious shoot development from mature cotyledons of glycine max cv bragg. In Vitro Cell Dev Biol 25, 385–388 (1989). https://doi.org/10.1007/BF02624603

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  • DOI: https://doi.org/10.1007/BF02624603

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