The scattering of the sperm chromatin in the polar nucleus takes about 1 hour.
精核染色质在极核里分散的时间大约需用1小时。
Two polar nucleis fuse into the secondary nucleus, or they dontt fuse before the anther shed.
开花前 ，两极核融合成次生核 ，或不融合仍保留极核状态。
Polar nuclei The, usually two, haploid nuclei found midway along the EMBRYOSAC, forming a binucleate central cell. They may fuse to form the diploid definitive nucleus.
通常指两个位于胚囊中间的单倍体核，他们可能融合形成一个二核的中央细胞。
Polar nuclei The, usually two, haploid nuclei found midway along the EMBRYOSAC, forming a binucleate central cell. They may fuse to form the diploid definitive nucleus.
通常指两个位于胚囊中间的单倍体核，他们可能融合形成一个二核的中央细胞。
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