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Siggi_Hartmeyer

Hybridization of Byblis filifolia & B. liniflora

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Meanwhile the CPN December issue has been released, so the time has come to post some information (provided in our CPN-article on Byblis) also to this forum. In late autumn 2010 Irmgard and I could successfully cross-pollinate the flowers of Byblis 'Goliath' (branching B. filifolia) with pollen of Byblis 'David' (non-branching B. liniflora). In spring 2011 we realized the clearly intermediate appearance (size and details, see photos) of five hybrid plants. This was especially interesting, because the flowers of the self-sterile B. filifolia release pollen only through vibration (buzz-pollination) whilst the small B. liniflora is fertile by self-pollination.

The trans-species F1-hybrid is looking like an airy B. filifolia 'Goliath' on a first glance, also developing branches, but the flowers are self-pollinating and fertile like the male ancestor B. liniflora. In August 2011 we repeated the experiment and pollinated flowers of Byblis 'Goliath' again with pollen of Byblis 'David', and again developed a healthy seed pod which released seeds after 20 days. Meanwhile also the F2-generation, grown from seeds of the F1-hybrid started flowering in our greenhouse and we will soon report more about them.

Photos of the F1-hybrid: Fig. 1 = dried herbar specimen on DIN A4 (210 mm × 297 mm) size paper. Fig. 2 = plant details.

Byblis_cf-filifoliaXliniflora_gepresst_1bprint.jpg

Byblis_filixlini_Collage1text1.jpg

We thank Brian Barnes for the trustful provision of Byblis 'Goliath' seeds (P-Generation) and personal communication such as his observations on pulvini in the genus, which enabled our time-lapse documentation on video as well as the experiments which finally led to the appearance of the supposed hybrid. And we thank Dr. Jan Schlauer for checking the results of our experiment and for his scientific expert advise.

To make our CPN-article also available for readers who are not ICPS-members, we published it now also on our website:

CPN Byblis-article

The story of pulvini and hybridization in Byblis is also part of our new movie "Sarracenia - Endangered Gems". That excerpt has now also been uploaded to YouTube:

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First of all I have to apologize for a nasty copy-paste-error which happened with the collage of the hybrid details. The former copy, which was unfortunately also posted to CPN with our article, contained the same small seed image as the picture with Byblis 'Goliath' details ... and it actually showed the Goliath seeds. This was alone my mistake and no editor can be blamed for this confusion. Meanwhile all pictures on-line have been corrected and the editors have been informed.

To show the details clearly, here are the original USB-microscope pictures (200 x magnification). No sections were separated and enlarged, so the seed size is matchable. The hybrid seeds generally vary a little more in size than those of the parent plants.

Fig. 1: Seeds Byblis 'Goliath'

ByblisGoliath4_seedmag200.jpg

Fig. 2: Seeds Byblis hybrid (harvested from F1-hybrids)

ByblisfiliXlini5_seedmag200.jpg

Fig. 3: Seeds Byblis liniflora

Byblisliniflora2_seedmag200.jpg

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