Malformación polínica y niveles de ploidía en Ranunculus grex parnassiifolius. Pollen malformation and ploidy levels in Ranunculus grex parnassiifolius
DOI:
https://doi.org/10.24310/abm.v36i1.2779Abstract
Español. Se presenta un estudio sobre la malformación polínica en Ranunculus grex parnassiifolius, un complejo poliploide cuya distribución va desde las montañas del noroeste de la Península Ibérica hasta la mayor parte de los macizos alpinos. El resultado más notable es la baja viabilidad de polen en las poblaciones tetraploides (85,27% de polen no viable) en comparación con las poblaciones diploides (17,72%); y se considera como una prueba de la existencia de procesos reproductivos parcialmente apomícticos.
English. Asurvey of pollen malformation in Ranunculus grex parnassiifolius, a polyploid complex distributed from the northwestern mountains of the Iberian Peninsula to the most alpine massifs, is presented. The most remarkable result is the low viability of pollen in tetraploid populations (85.27% of nonviable pollen) compared to diploid populations(17.72%); and is considered as a proof ofthe existence of partial reproductive apomictic processes.
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