. Acta horti bergiani : Meddelanden från Kongl. Svenska Vetenskaps-Akademiens Trädgård Bergielund. Botany. ié ACTA HORTI BEKGlANI. BANÖ 5. NIO 4. appeared in the micropylar end (figs. 51, 52). These antipodal embryos afe wholly within the sac and I do not think they were produced apogamously.» Nachdem er Chamberlains und Oppermans Untersuchungen referiert hat, setzt er fort: »Tretjakow has found the antipodal embryo which since Miss Ol'PER- MANS discovery, we are justified in concluding comes from a fertihzed anti- podal egg, thus making the history complete and establishing beyond doubt. Wi é
. Acta horti bergiani : Meddelanden från Kongl. Svenska Vetenskaps-Akademiens Trädgård Bergielund. Botany. ié ACTA HORTI BEKGlANI. BANÖ 5. NIO 4. appeared in the micropylar end (figs. 51, 52). These antipodal embryos afe wholly within the sac and I do not think they were produced apogamously.» Nachdem er Chamberlains und Oppermans Untersuchungen referiert hat, setzt er fort: »Tretjakow has found the antipodal embryo which since Miss Ol'PER- MANS discovery, we are justified in concluding comes from a fertihzed anti- podal egg, thus making the history complete and establishing beyond doubt. Wi é 27 \ Solia'aiw serolitin. — Fig. 27. Fertiger Emhryosack aus der obersten Megaspore entwickelt. Die unteren .Megasporen im 2-kernstadiuni, die unterste mit ungeteiltem Kern. Fig. 28. P'ertiger Embrj'osack. Die Tetradenzellen jetzt in eine Anzahl Zellen mit 1—2 Kernen aufgeteilt. Fig. 29. Steriler Embryosack, vermutlich aus der chalazalen Megaspore entwickelt. the right to call these structures an egg. As the conditions mentioned above were all found in Ulnius, I feel justified in calling these antipodal structures eggs.» Tretjakow selbst betont indessen ausdritcklich, dass die von ihm bei Allium odoruni konstatierten Antipoden-Embryonen auf rein vegetativem Wege gebildet wurden, also ohne Befruchtung. SllATTUCK glaubt zwar den Pollen- schlauch auf dessen Weg zur Antipodenregion verfolgt und möglicherweise auch dessen Eindringen in Embryosack beobachtet zu haben. Seine Figuren. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergianska stiftelsen; Kungl. Svenska vetenskapsakademien. Trädgård Bergielund. Stockholm : Bergianska Stiftelsen
Size: 1122px × 2227px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1891
