Zhang Liangtao, Murray Brian G, Pickering Richard A
School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
Hereditas. 2002;137(2):90-5. doi: 10.1034/j.1601-5223.2002.01549.x.
Synaptonemal complexes (SC) have been analysed in barley (Hordeum vulgare), H. bulbosum and two F, hybrids between them. These hybrids show different recombination frequencies and at pachytene show significant differences in the total length of SC formed and in the extent of synapsis. Higher recombination frequency in the hybrids was correlated with a greater total SC length. Differences in SC length were also observed between the parental species with H. bulbosum having a greater SC length than H. vulgare. However, species and hybrid can have similar SC lengths but clearly different recombination frequencies and, therefore, the relationship between SC length and recombination is not clear-cut.
在大麦(Hordeum vulgare)、球茎大麦(H. bulbosum)以及它们之间的两个F1杂种中分析了联会复合体(SC)。这些杂种表现出不同的重组频率,在粗线期,所形成的SC的总长度以及联会程度存在显著差异。杂种中较高的重组频率与更大的SC总长度相关。在亲本物种之间也观察到SC长度的差异,球茎大麦的SC长度大于大麦。然而,物种和杂种可能具有相似的SC长度,但重组频率明显不同,因此,SC长度与重组之间的关系并不明确。