Abstract

1. The haploid chromosome number of Torreya nucifera is eleven.2. Fertilization occurs in the middle of August. After fertilization 3 simultaneous nuclear divisions occur. Cell wall formation begins at the 8 nucleus stage. The proembryo is formed in the basal part of the egg cell. 3. Usually four embryonic initials are formed at the end of the prosuspensor. These cells develop separately. Rosette embryo is very common.

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