double fertilization

the situation in flowering plants where a male nucleus combines with the egg nucleus and another male nucleus combines with the primary endosperm to form an endosperm nucleus. See EMBRYO SAC.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

In the July 6 samples after double fertilization the zygote remained undivided which was located at the micropylar pole (Table 1).

Megasporogenesis and development of female gametophyte in Chinese chestnut (Castanea mollissima) cultivar Yanshanzaofeng'

On its way, the pollen tube penetrates the stigmatic surface, is then guided through the stigma and style and placenta, grows onto the funiculus, and finally enters the micropyle of the ovule for double fertilization (Figures 1 and 3A).

Plant reproduction & the pollen tube journey--how the females lure the males

One such event is double fertilization. The plants' sperm cells each have two nuclei containing genetic material.

Floral shocker: blooms shake roots of flowering-plant family

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