double fertilization


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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.
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In the July 6 samples after double fertilization the zygote remained undivided which was located at the micropylar pole (Table 1).
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).
Plants reproduce sexually during the process of double fertilization.