Studies on Meiosis of PMC's in P . alba × glandulosa and Their Parents = Studies on Meiosis of PMC's in P . alba × glandulosa and Their Parents

다국어 초록 (Multilingual Abstract)

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다국어 초록 (Multilingual Abstract)

The chromosome behavior and it`s synapsis in the meiosis of pollen mother cell were studied on Populus alba L. as a female parent tree, Populus glandulosa Uyeki as a male parent tree and their hybrid, Populus alba x glandulosa. 1. At metaphase I, the number of nuclear plates with early separation chromosome were observed with the lowest proportion of 11.0% in Populus glandulosa and with the highest proportion of 13.0% in Populus alba x glandulosa. 2. At metaphase II, early separation chromosomes appeared with the frequency of 11.0% in Populus alba x glandulosa. But the frequency was not different with those of the parental trees. 3. At anaphase I, lagging chromosomes appeared with some high rate of 11.6% in Populus alba x glandulosa and yet the number of chromosome bridges in populus alba x glandulosa almost were not different with the partental trees. 4. At anaphase II, lagging chromosomes appeared with some high frequency of 10.2% in Populus alba x glandulosa and the chromosome bridges in Populus glandulosa appeared with the highest frequency in all studied trees. 5. The frequency of abnormal pollen sporad was the highest value of 8.2% in Populus alba x glandulosa among the studied trees. With the results, it might be assured that the chromosome segregation and it`s synapsis behaved normally in Populus alba, Populus glandulosa and Populus alba x glandulosa, and so all the studied trees could produced normal pollens.