Summary
In the seriesMegistacroloba of the genusSolanum meiosis was regular usually having 12 bivalents at diakinesis and metaphase I in five species and 13 interspecific hybrids. The one exception wasS. toralapanum in which two clones had a high frequency of univalents at diakinesis and metaphase I.
Two species,S. raphanifolium andS. sogarandinum, exhibited a unilateral crossing pattern with the other species. F2 seed was obtained from sib-matings in all but three of the hybrids.
Resumen
En la serie megistacroloba del géneroSolanum, la meiosis fue generalmente regular, teniendo 12 bivalentes en diaquinesis y metafase I, en five especies y 13 hibridos interespecificos. Una de las excepciones fueS. toralapanum, en la cual 2 clones tuvieron una alta frecuencia de univalentes en diaquinesis y metafase I.
Dos especies,S. raphanifolium yS. sogarandinum, exhibieron un patrón unilateral de cruzamiento con las otras especies.
Se obtuvo semilla de la F-2, derivada de cruzas fraternales en todas, a excepción de tres de los hibridos.
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Buck, R.W. Cytogenetic studies of species and interspecific hybrids ofSolanum, sectionTuberarium, seriesMegistacroloba . American Potato Journal 43, 199–206 (1966). https://doi.org/10.1007/BF02860974
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DOI: https://doi.org/10.1007/BF02860974