The mature embryo sac of the sugar beet, Beta vulgaris: A structural investigation |
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| Authors: | Lone Bruun |
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| Affiliation: | Botanical Laboratory, Dept of Plant Anatomy and Cytology, Univ. of Copenhagen, Gothersgade 140, DK-1123 Copenhagen K, Denmark. |
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| Abstract: | The mature embryo sac of Beta vulgaris consists of one egg cell, one persistent and one degenerated synergid, one cental cell with two fused polar nuclei, and five to six antipodals. The degeneration of one of the synergids appears before pollination in the maturing process. The two fused polar nuclei are located in the chalazal part of the central cell. The antipodals may have secretory activities. It is suggested that the embryo sac of the sugar beet completes the maturing process independently of pollination. |
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