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Position: Home > Articles > Meiosis process of pollen mother cells in Opisthopappus taihangensis (Ling) Shih and Crossostephium chinense (L.) Makino Journal of Nanjing Agricultural University 2009,32 (4) 43-46

太行菊和芙蓉菊花粉母细胞减数分裂过程

作  者:
李健;陈发棣;陈素梅;房伟民
单  位:
南京农业大学园艺学院
关键词:
太行菊;芙蓉菊;减数分裂
摘  要:
对太行菊和芙蓉菊花粉母细胞减数分裂过程进行了研究。结果表明:太行菊和芙蓉菊减数分裂过程基本正常,为同时型胞质分裂。减数分裂中期Ⅰ染色体基本构型为9个二价体,其中太行菊和芙蓉菊每个花粉母细胞(PMC)平均染色体配对构型分别为0.05Ⅰ+8.92Ⅱ+0.03Ⅳ和0.04Ⅰ+8.61Ⅱ+0.02Ⅲ+0.17Ⅳ;部分花粉母细胞后期Ⅰ和后期Ⅱ及末期Ⅰ和末期Ⅱ发现有染色体桥、落后染色体、微核及不同步分裂等减数分裂异常现象。
译  名:
Meiosis process of pollen mother cells in Opisthopappus taihangensis (Ling) Shih and Crossostephium chinense (L.) Makino
作  者:
LI Jian,CHEN Fa-di,CHEN Su-mei,FANG Wei-min (College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China)
关键词:
Opisthopappus taihangensis(Ling)Shih;Crossostephium chinense(L.)Makino;meiosis
摘  要:
Meiosis behaviors in the Opisthopappus taihangensis(Ling)Shih and Crossostephium chinense(L.)Makino were investigated for the first time.The results showed that meiosis of pollen mother cell(PMC)was overall normal and simultaneous cytokinesis.The chromosome pairing configurations at meiotic metaphaseⅠper PMC in Opisthopappus taihangensis(Ling)Shih and Crossostephium chinense(L.)Makino,with the commonest configurations of 9 bivalents(9Ⅱ),were 0.05Ⅰ+8.92Ⅱ+0.03Ⅳ and 0.04Ⅰ+8.61Ⅱ+0.02Ⅲ+0.17Ⅳ,respectively.A few of chromosome bridges and laggard chromosomes were found in some PMCs at anaphase Ⅰand Ⅱ;moreover,micronucleus and nonsynchronous division were also observed in several cells at telophaseⅠand Ⅱ.

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