. The propagation of plants ; giving the principles which govern the development and growth of plants, their botanical affinities and peculiar properties; also, descriptions of the process by which varieties and species are crossed or hybridized, and the many different methods by which cultivated plants may be propagated and multiplied . Plant propagation. 106 PROPAGATION^ OF PLAIITS. Corn, and olosely allied plants, there is one pistil for each oTule or seed-vessel, and more than one pollen tube would be an entirely superfluous production, hence we find only one in each. If a pistil is destro
. The propagation of plants ; giving the principles which govern the development and growth of plants, their botanical affinities and peculiar properties; also, descriptions of the process by which varieties and species are crossed or hybridized, and the many different methods by which cultivated plants may be propagated and multiplied . Plant propagation. 106 PROPAGATION^ OF PLAIITS. Corn, and olosely allied plants, there is one pistil for each oTule or seed-vessel, and more than one pollen tube would be an entirely superfluous production, hence we find only one in each. If a pistil is destroyed the ovule at its base remains unfertilized, and no grain or seed is produced, and where a few of the pistils are fertilized and the others not, the result on an ear of Com will resem- ble the one shown in fig- ure 45, the grains on it varying in number with the number of pistils fer- tilized. It is only about sixty years (1823) since Prof. Amici, an Italian botanist, discovered the pollen tubes, and this opened a new field for investigation, which was soon occupied by some of the most eminent botan- ists of Europe. Previous to the discovery of Amici, the process by which the ovules were fertilized was unknown. Some vegeta- ble physiologists supposed that the pollen grains passed hodily through the pistils to the ovary—an erroneous idea which still pre- vails among certain horticulturists of the present Fig. 45.—IMPBKPECTLT FBRTtLIZED OF 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 Fuller, Andrew Samuel, 1828-1896. New York : Orange Judd
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectplantpropagation
