Abstract
Protoplasts isolated from four-week old cell suspension cultures ofGlycine canescens F. J. Herm andG. clandestina Wendl. were cultured in 8P or modified 8P to a multicellular stage. Colonies of 0.5 to 1.0 mm diameter were transferred to solid media for callus growth and regeneration. Callus consisted of friable masses with compact green nodular areas. Organogenesis of both species occurred primarily from the green nodular areas. Shoot buds ofG. clandestina did not mature, but shoots ofG. canescens proliferated on MS medium, with B5 vitamins, 0.33 mgL−1 each BA, KN, ZN, and 0.15 mgL−1 NAA. Shoots failed to root after multiple subcultures on four different rooting media.In vitro grafting ofG. canescens scions ontoG. max root stocks allowed plants to be transferred to soil. An overall protoplast division efficiency of 48% was achieved with moderately efficient shoot regeneration inG. canescens. Division efficiencies forG. clandestina were lower (11%). Refinements of this protocol should result in high efficiencies of regeneration which would allowin vitro manipulations of these wild soybean relatives at the single cell level and would make the derivation of somatic hybrid plants possible within the genusGlycine.
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Abbreviations
- BA:
-
6-Benzyladenine
- KN:
-
kinetin
- ZN:
-
Zeatin
- NAA:
-
Napthaleneacetic acid
- 2,4-D:
-
2–4-dichlorophenoxyacetic acid
- PIC:
-
Picloram
- CH:
-
casein hydrolysate
- Gln:
-
glutamine
- Met:
-
methionine
- MES:
-
2[N-morpholine] ethanesulfonic acid
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Myers, J.R., Lazzeri, P.A. & Collins, G.B. Plant regeneration of wildGlycine species from suspension culture-derived protoplasts. Plant Cell Reports 8, 112–115 (1989). https://doi.org/10.1007/BF00716852
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DOI: https://doi.org/10.1007/BF00716852