Abstract
The following is a summary of somatic variations in hyacinths, tulips and narcissi. A. Somatic variation without change of chromosome number. (1) Somatic variation of flower coloration. In hyacinths: heteroploid varieties without change of chromosome number produce bud variations in which the anthocyanin appears in the epidermis instead of in the subepidermis. The blue color changes into light violet. In tulips: carotinoids as well as anthocyanin act a part in somatic variation. Moreover, sectors are found in which form and color are different from the mother variety. In narcissi: changes of the color of the chromoplasts take place by somatic variation. (2) Somatic variation of form. In hyacinths: somatic variations of triploid varieties occur in which one organ or all the organs of the plant are much elongated. In tulips: besides parrot forms very primitive shaped flowers appear. In narcissi: splitting of the corona by somatic variation and phenomena connected with it occur. B. Somatic variation with cha...
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