Cytological Observations on Scirpus Linn. from North India.
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概要
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Population studies on five species of Scirpus namely, S. kyllingioides, S. litoralis, S. mucronatus, S. roylei and S. triqueter show fixed chromosome numbers in S. mucronatus (n=22) and S. triqueter (n=21) while S. kyllingioides and S. litoralis show high incidence of aneuploidy. Both diploid (n=11) and octaploid (n=44) cytotypes are recorded for S. roylei. On the basis of recorded base numbers (X=5, 7, 8) in Scirpus, it is very difficult to guess correctly the ploidy level for S. kyllingioides and S. litoralis cytotypes.Sedges show a high incidence of euploid and aneuploid numbers which is due to vegetative propagation so common in the group because this mechanism of race perpetuation helps in conservation of all the evolved cytotypes which is normally not the case with other groups of flowering plants not exhibiting vegetative propagation.
- 財団法人 日本メンデル協会の論文
財団法人 日本メンデル協会 | 論文
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