. The American botanist : a monthly journal for the plant lover. Botany. SEP 2 1916 The American Botanist VOL. XXII JOLIET, ILL., MAY, 1916 No. 2 ^mid the thousand blossoms of the l/me ZJhe ffossi'p bees £fo hurri/in^ to and froj ^nd oh, the busyyoy of wor/ciny time, J^nd oh, the fragrance where the lime trees yrow. —Augusta Webster. XENIA IN MAIZE By Adolph E. Waller. ^ I 'HE formation of the endosperm of a great many seeds from a triple fusion is a well known fact to all students of botany. When the contents of a pollen grain are discharged through the pollen tube, the first sperm fuses with
. The American botanist : a monthly journal for the plant lover. Botany. SEP 2 1916 The American Botanist VOL. XXII JOLIET, ILL., MAY, 1916 No. 2 ^mid the thousand blossoms of the l/me ZJhe ffossi'p bees £fo hurri/in^ to and froj ^nd oh, the busyyoy of wor/ciny time, J^nd oh, the fragrance where the lime trees yrow. —Augusta Webster. XENIA IN MAIZE By Adolph E. Waller. ^ I 'HE formation of the endosperm of a great many seeds from a triple fusion is a well known fact to all students of botany. When the contents of a pollen grain are discharged through the pollen tube, the first sperm fuses with the egg to form the embryo, while the second sperm unites with the two polar bodies, or polar nuclei, to form the definitive nucleus. This later becomes the endosperm tissue surrounding and pro- tecting the embryo. It is here that a reserve supply of starchy material is stored. After the seed is planted and sprouting starts, the embryo draws on the endosperm for its food supply until the young plantlet can nourish itself. The phenomenon called xenia is intimately connected with triple fusion. Xenia shows the immediate influence of the pol- len in subsequent endosperm formation. If the second sperm from the pollen brings with it determiners for a dominant char- acter that expresses itself in the endosperm, i. e. if pollen from blue flint corn is transferred to the silks of white dent corn, then. 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 Binghamton, N. Y. : Willard N. Clute & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
