Study on Chromosome Behavior in Polyploidy of Apomictic Boehmeria tricuspis
Study on Chromosome Behavior in Polyploidy of Apomictic Boehmeria tricuspis
复制标题
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Zang Gong-gu
中科院分区：
文献类型：
--
作者：
Zang Gong-gu
本文旨在探讨三倍体无融合生殖的起源的细胞遗传学基础。我们开展了三倍体无融合生殖三倍体与二倍体有性三倍体之间的PMC减数分裂的研究。在三倍体无融合生殖的三倍体的PMC减数分裂中发现了丰富的三价体，表明它是同源三倍体。在有性三倍体的三倍体中，PMC减数分裂通常是正常的。但它们的一些异常行为可能导致2n配子的发生。2n配子和n配子的融合可能导致同源三倍体植株的产生。这将是三倍体无融合生殖起源的细胞遗传学基础事件。
The objective of this paper was to investigate the cytogenetic basis for origin of triploid apomictic Boehmeria tricuspis.We developed a study on the meiosis of PMC between the triploid apomictic B.tricuspis and the diploid sexual B.tricuspis.Rich trivalents were found in the PMC meiosis of triploid apomictic B.tricuspis showed it was a autotriploid.In the sexual B.tricuspis,the PMC meiosis usually be normal.But a few were abnormal and some of their behavior might led to the occurrence of 2n gamete.The fusion of 2n gamete and n gamete might led to autotriploid apomictic plants.This would be the cytogenetic basic event for the origin of triploid apomictic B.tricuspis.