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Cultivating Palmaria palmata - Bord Iascaigh Mhara

Cultivating Palmaria palmata - Bord Iascaigh Mhara

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Fig. 2.4. a) Reproductive frond of a tetrasporophyte of <strong>Palmaria</strong> <strong>palmata</strong>. The irregularly shaped dark<br />

areas are spore-containing sori. b) Fertile frond of a male gametophyte. Lighter coloured, irregularly<br />

shaped areas contain spermatangia. c) Micrograph of fertile tissue of <strong>Palmaria</strong>. One tetrasporangium<br />

(spore compartment) contains four tetraspores (arrow). The white arrow points to an empty<br />

tetrasporangium after spore release. d) Spore shortly after release. e) Spores undergoing cell-division 4<br />

days after release. f) Developing male gametophyte 10 days after spore release. g) Female<br />

gametophyte 10 days after spore release with trichogynes (arrows). h) Sporelings growing on culture<br />

string 1 month after seeding.<br />

16<br />

25 μm<br />

40 μm 50 μm<br />

50 μm<br />

a b<br />

c<br />

e f<br />

g<br />

1 mm<br />

d<br />

h

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