GIEMSA C-BANDED KARYOTYPES OF DIPLOID AND TETRAPLOID HORDEUM-BULBOSUM (POACEAE)
GIEMSA C-BANDED KARYOTYPES OF DIPLOID AND TETRAPLOID HORDEUM-BULBOSUM (POACEAE)
复制标题
DOI：
10.1007/bf00937804
复制
发表时间：
1990-01-01
影响因子：
1.9
通讯作者：
JACOBSEN, N
中科院分区：
文献类型：
--
作者：
LINDELAURSEN, I;VONBOTHMER, R;JACOBSEN, N
球茎大麦（2x和4x）的基本基因组具有五条相当相似的中部着丝粒染色体，一条亚中部着丝粒染色体和一条随体染色体。C-带型的特征是在大多数染色体上有一条或两条着丝粒带，近着丝粒带，小到较大的带，核仁组织者带，但端粒带很小或很小，几乎完全没有中间带。带型多态性普遍存在。带型多态性普遍存在。由染色体形态学支持的带型使得能够鉴定同源物，并区分H. bulbosum（2x）. C-带核型。bulbosum（4x）支持同源多倍体起源，但它是可能的，以确定只有亚中着丝粒和SAT染色体的同源物。
The similar-looking basic genomes of Hordeum bulbosum (2x and 4x) have five rather similar metacentric, one submetacentric, and one satellited chromosome. C-banding patterns are characterized by one or two centromeric, juxtacentromeric, small to larger bands in most chromosomes, by bands at the nucleolar organizers, but small or very small telomeric bands, and by the nearly complete lack of intercalary bands. Banding pattern polymorphism is widespread. Banding patterns polymorphism is widespread. Banding patterns supported by chromosome morphology enable identification of homologues, and discrimination between non-homologues in H. bulbosum (2x). The C-banded karyotype of H. bulbosum (4x) supports an autopolyploid origin, but it was possible to identify only homologues of submetacentrics and SAT-chromosomes.