Abstract
THE results of genetical studies, completed up to the F2 generation this year, and of preliminary cytological investigations, enable us to add another to the increasing list of known tetraploids amongst plants. Crossing Saxifraga rosacea with S. granulata, a small F1 generation was raised the plants of which were uniform, except that one showed abnormal development of the petals in most of the flowers. The general balance of characters was towards the male parent (S. granulata). One of the F1 plants with normal flowers was selfed and a large F2 generation (436 in dividuals) raised. The plants of this generation were remarkably uniform, except that petal abnormalities appeared in a few or majority of flowers in five plants. No trace of segregation towards the distinct habit and flower characters of the two parents could be traced.
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MARSDEN-JONES, E., TURRILL, W. A Tetraploid Saxifraga of known Origin. Nature 122, 58 (1928). https://doi.org/10.1038/122058c0
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DOI: https://doi.org/10.1038/122058c0
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