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Duboisia Hopwoodii X Myoporoides Hybridisation

Duboisia hopwoodii x myoporoides hybridisation

I haven’t read of these 2 species hybridising before, there is the well known D. myoporoides x leichhardtii hybrids used for scopolamine production in Australia and some obscure reports of D. hopwoodii hybridising with Grammosolen dixonii and Anthotroche pannosa. Also reports of D. myoporoides hybridising with Cyphanthera albicans and C. scabrella.

I had good fertilisation from the crossing of with D. hopwoodii (as the pistillate parent) with Duboisia myoporoides (the staminate parent), parent flower was emasculated and fresh pollen from D. myoporoides was used to fertilise, the immature fruit swelled after a week or two and turned black at maturity after 4-8 weeks. The seed was removed from the flesh, cleaned, dried and then soaked overnight in GA3 solution (1600ppm) and sown as normal (~5mm) under the surface of a mix of searles potting mix:perlite:river sand and placed in my greenhouse in spring 2009 (Near Laidley QLD). Light levels are not the highest but still germination started around 21 days and continued until I had 35 of the 40 seeds germinate. Now it’s about waiting… These could be really interesting in the chemical compounds they produce, which tropanes will they produce?

I have material for analysis or bioassay, please send me an email. I’ll be adding more pictures and info as they come to hand, the seedlings are continuing to grow very well. Once i have enough material from individual plants, I hope to send samples off to the US for analysis as there is little interest here. We generally have a few F3 seedlings for sale during the year in the store.

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Duboisia leaf comparison; myoporoides on the left, the hybrid centre and hopwoodii right
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Duboisia hybrid flower and spider
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Duboisia hybrid flowering
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Duboisia hybrid leaves
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Duboisia hybrid in situ
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Fruit!
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