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Endosperm and Perisperm of Coffee with Notes on the Morphology of the Ovule and Seed Development
William G. Houk
American Journal of Botany
Vol. 25, No. 1 (Jan., 1938), pp. 56-61
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2436631
Page Count: 6
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The ovule of Coffea is accompanied by an extensively developed obturator. There appears to be no distinction between the tissues of the nucellus and those of the integument, the two being intimately fused. Endosperm production is scanty, and the few cells produced are soon crushed by the developing embryo. As a rule, walls are laid down immediately after the division of the endosperm nucleus, but sometimes wall formation is delayed for a time, or perhaps in some instances is omitted. The mass of tissue around the embryo is perisperm and thus belongs to the parental generation-a point of great importance in breeding work. The embryo is of the undifferentiated type, consisting of only a mass of cells until about the fifth month after fertilization.
American Journal of Botany © 1938 Botanical Society of America, Inc.