In flowering plants the endosperm tissue is usually triploid, resulting from the fusion of one of the pollen nuclei with the two polar nuclei.
In flowering plants the endosperm tissue is usually triploid, resulting from the fusion of one of the pollen nuclei with the two polar nuclei.
在开花植物中，胚乳组织多为三倍体，由一个花粉核和两个极核融合产生。