Accessory Nucleoli in Trigonella foenum-graecum L

抄録

Of ten varieties of Trigonella foenum-graecum studied, all but one had usually one nucleolus in diplotene/diakinesis cells. In Sweden-B supernumerary nucleoli ranging in number from-2-10 were encountered in five plants out of the 16 investigated. The aberrant cells approached 100% in all. The nucleoli were of different sizes and seen to be attached to different bivalents. The presence of accessory nucleoli has been attributed to gene mutation/mutations which lead to disturbed genetic condition and a change in the regulatory system of the cell. Hybridity and environmental causes were eliminated. The difference in the size of the nucleoli has been explained on the basis of difference in the intensity of nucleolar forming power.