Unusual cytological patterns in microsporogenesis in a cultivar of Fuchsia |
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Authors: | J P Tilquin K de Brouwer F Horvat |
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Institution: | (1) Faculté des Sciences Agronomiques, Université du Burundi, B.P. 2940, Bujumbura, République du Burundi;(2) Laboratoire de Cytogénétique, Institut Carnoy, Université Catholique de Louvain, B-1348 Louvain-La-Neuve, Belgium |
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Abstract: | Summary Multiple and multipolar spindles are a generalized feature of microsporogenesis in a cultivar of Fuchsia. Only the first meiotic division occurs and gives rise to sporads with nine microspores. Variation in chromosomal complements of the microspores is illustrated by pollen polymorphism. Since some of these pollen grains are able to germinate, the possible breeding value of this super-reductional type of division is questionable. Hypotheses concerning this phenomenon found in the literature are discussed in the light of our results. |
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Keywords: | Fuchsia microsporogenesis Multiple spindle Chromosomal instability |
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