GENETIC SUPPRESSION OF HOMOEOLOGOUS CHROMOSOME PAIRING IN HEXAPLOID WHEAT
GENETIC SUPPRESSION OF HOMOEOLOGOUS CHROMOSOME PAIRING IN HEXAPLOID WHEAT
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DOI：
10.1139/g72-004
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发表时间：
1972-01-01
期刊：
影响因子：
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通讯作者：
DRISCOLL, CJ
中科院分区：
文献类型：
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作者：
DRISCOLL, CJ
六倍体小麦的二价调控具有更大的遗传复杂性。在3A染色体上发现了一个同源配对抑制子。因此，同源组3中存在两个抑制子。3A抑制子可能与3d β上的抑制子或本研究中检测到的3Dα上的启动子同等位。单独来看，这两个抑制子比5B染色体长臂上的抑制子效果更差；然而，它们的综合效应还有待研究。这种更大的复杂性表明，六倍体小麦在二价的遗传控制方面可能与其他多倍体没有太大的不同。这些抑制因子的作用模式似乎与异质多聚假说相一致。
Greater genetic complexity has been revealed for the control of bivalency in hexaploid wheat. A suppressor of homoeologous pairing has been detected on chromosome 3A. Thus, there are two suppressors in homoeologous group 3. The 3A suppressor may be homoeoallelic to either the suppressor on 3Dβor the promoter, detected in this study, on 3Dα. Individually these two suppressors are less effective than the suppressor on the long arm of chromosome 5B; however, their combined effect is yet to be studied. This greater complexity suggests that hexaploid wheat may not be too dissimilar to other polyploids as regards genetic control of bivalency. The mode of action of these suppressors appears to be consistent with a heteromultimeric hypothesis.