Abstract
In vitro anther-derived monoploids (2n=x=12) of Solanum phureja were compared for shoot regeneration from leaf and stem explants under various environmental conditions. Monoploids from the same or different diploid clones varied for frequency and earliness of shoot regeneration and number of shoots formed per explant. Leaf explants regenerated at higher frequencies than stem explants. Explants from stock plantlets subcultured at a 2- or 4-week interval regenerated earlier and at a higher frequency than those from plantlets subcultured at longer intervals. Regeneration frequency and number of shoots per explant were greater when explants were incubated at 20°C compared to 25°C. Explants from stock plantlets maintained under a 16 h as opposed to an 11 h photoperiod exhibited increased shoot regeneration; however, neither photoperiod nor the maintenance temperature of the stock plantlets influenced regeneration frequency. Genotypic differences were observed for the frequency of chromosome doubling among regenerated shoots whereas temperature treatments had no influence on chromosome doubling.
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Abbreviations
- BA:
-
benzyladenine
- GA3 :
-
gibberellic acid
- IAA:
-
indole-3-acetic acid
- NAA:
-
α-naphthale-neacetic acid
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Kaburu M'Ribu, H., Veilleux, R.E. Effect of genotype, explant, subculture interval and environmental conditions on regeneration of shoots from in vitro monoploids of a diploid potato species, Solanum phureja Juz. & Buk.. Plant Cell Tiss Organ Cult 23, 171–179 (1990). https://doi.org/10.1007/BF00034428
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DOI: https://doi.org/10.1007/BF00034428