. The cell in development and inheritance. Cells. FERTILIZATION IN PLANTS 219 egg (Fig. 108); and the earlier observers of the angiosperms, includ- ing Strasburger ('84, '88) and Guignard ('91, i), likewise found that only one of the generative nuclei entered the embryo-sac. Guio-nard // •. Fig. 107. — Fertilization in the lily. \D from Mottier, the others from Guignard.] A. Embryo-sac, ready for fertilization. B. Both generative nuclei have entered the embryo- sac ; one is approaching the egg-nucleus, the other uniting with the upper polar nucleus. C. Union of the germ-nuclei; below, union of
. The cell in development and inheritance. Cells. FERTILIZATION IN PLANTS 219 egg (Fig. 108); and the earlier observers of the angiosperms, includ- ing Strasburger ('84, '88) and Guignard ('91, i), likewise found that only one of the generative nuclei entered the embryo-sac. Guio-nard // •. Fig. 107. — Fertilization in the lily. \D from Mottier, the others from Guignard.] A. Embryo-sac, ready for fertilization. B. Both generative nuclei have entered the embryo- sac ; one is approaching the egg-nucleus, the other uniting with the upper polar nucleus. C. Union of the germ-nuclei; below, union of the second generative nucleus and the two polar nuclei. D. The fertilized egg, showing fusion of the germ-nuclei. E. The fertilized egg dividing; below, division of the endosperm-nuclei, a. antipodal cells; e. endosperm-nuclei; o. the oosphere or ovum • p. polar nuclei; /. t. pollen-tube. and Nawaschin have, however, recently made the remarkable dis- covery that in Liliuni and Fritillaria both generative nuclei enter the embryo-sac. One of these conjugates with the egg-nucleus and. 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
