Reproductive Strategy in The Ranunculus Auricomus Complex (Ranunculaceae)

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A preliminary study of reproductive strategy was earned out on plants representing four cytotypes of the Ranunculus auricomua complex. Diploid plants reproduce sexually, triploids, tetraploids and hexaploids have an apomictic mode of reproduction (apospory combined with pseudogamy). Some morphological characters of the plants connected with reproduction were analyzed at various phases and compared in two successive seasons. The following characters were estimated at the individual level: number of ovules and primary pollen grains per plant, pollen viability, pollen-ovule ratio, number of achenes per plant and their germinability, seed-ovule ratio. Most of data characteristic of reproductive strategy were calculated according to the formulae proposed by Urbartska (1989, 1990). Apomictic cytotypes have both a significantly lower pollen viability and seed-ovule ratio (the lowest values in triploids) than sexual diploids.




Izmaiłow, R. (1996). Reproductive Strategy in The Ranunculus Auricomus Complex (Ranunculaceae). Acta Societatis Botanicorum Poloniae, 65(1–2), 167–170.

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