Abstract
In order to clarify the embryogenic responses in soybean anther culture, anthers of four cultivars were cultured under known conditions to trigger androgenic response. A histological study was performed with anthers in vivo and with approximately 100 explants sampled after 9, 12, 15, 18, 21, 30 and 45 days of culture. In vitro culture triggered the frequent accumulation of phenolic compounds on the locular and anther surfaces, and also caused the destruction of cells and tissues in complex structure such as the tapetum, microspores and pollen grains. Somatic embryogenesis of unicellular origin was observed from the epidermis and the middle layer, and of multicellular origin from connective calluses. No androgenic response could be observed in the anthers of these four soybean genotypes, in the medium and conditions indicated. We point out to the need of changing the approach to the study of androgenesis in soybean, either by using culture conditions unfavourable to the proliferation of diploid tissues, or by culturing isolated microspores.
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Abbreviations
- ANOVA:
-
analysis of variance
- BA:
-
6-benzyladenine
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- ELS:
-
embryo-like structures
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Rodrigues, L.R., Oliveira, J.M.S., Mariath, J.E. et al. Histology of embryogenic responses in soybean anther culture. Plant Cell Tiss Organ Cult 80, 129–137 (2005). https://doi.org/10.1007/s11240-004-9159-z
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DOI: https://doi.org/10.1007/s11240-004-9159-z