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美洲黑杨小孢子母细胞减数分裂进程与花芽及 花药外观形态相关性研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2016年02期
Page:
48-52
Column:
研究论文
publishdate:
2016-03-30

Article Info:/Info

Title:
Relationship between the meiosis processes of microsporocytes and morphology of male flower buds and anthers in Populus deltoides Marsh
Article ID:
1000-2006(2016)02-0048-05
Author(s):
XIN Haoyang WANG Shuai LIU Guangxin ZHEN Yan SHI Jisen KUANG Hualin XI Mengli*
Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
Keywords:
Populus deltoides Marsh microsporocyte meiosis flower bud anther
Classification number :
S718
DOI:
10.3969/j.issn.1000-2006.2016.02.008
Document Code:
A
Abstract:
With carbol fuchsin staining, we studied the relationship between the meiosis processes of microsporocytes and the morphology of male flower buds and anthers in Populus deltoides Marsh, laying the foundations for inducing 2n gametes in this species. The results were as follows: The meiosis ended before the catkin came out of the bud scale. When the bud scale from the top or lateral of the flower bud began to loosen, all the meiosis processes were found from the same flower bud, and this time was optimum for inducing 2n gametes. The length of anthers in P. deltoides Marsh and the stages of meiosis were closely related. The 0.5 mm-long anther was at the stage of microsporocytes, the 1.0 mm-long anther was at the stage of leptotene, pachytene, metaphase Ⅰ, telophase Ⅰ and dyad, the 1.5 mm-long anther was at the stage of tetrad, the 2.0 mm-long anther was at the stage of pollen. Different flower buds in one flowering branch or different florets in one flower bud showed non-synchronization in the meiosis processes of microsporocytes, but different anthers in one floret showed synchronization in the processes. The behavior of chromosomes was standard during the meiosis processes of microsporocytes in P. deltoides Marsh. It could make this species a good experimental material for molecular cytogenetic study.

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Last Update: 2016-04-01