The endosperm, the tissue surrounding the plant embryo in the seed, has long been perceived as a nourishing tissue that is abandoned once the transition to the seedling is complete. A team has now ...
In 1937 Billings 1 published a paper on the reproductive cytology of angiosperms, illustrated by Isomeris arborea. His observations may be summarized as follows: (1) this plant is a haploid with a ...
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