The tentative analysis of Giemsa Obanding, N-banding and meiotic configuration of F1 hybrids indicated that M8003 was a translocation line of 2BS/2RS terminal translocation and 5AL/5RL partial translocation.
This paper compared the chromosome the chromosome banding patterns of three forms of six-rowed wild barley(Hordeum agriocrithon)by using Geimsa N-banding technique.
The deficiency of N-banded heterochromatin occurred near the centromere of chromosome 3A,the telomeres of chromosomes 1G,2G,3G and 5G,and both the centromeres and telomeres of chromosomes 1A,2A,5A,6A and 7A,respectively.
The differences between C-banded and N-banded heterochromatin and possible effects of telo-heterochromatin modifications on th'e evolution of G genome were also discussed.
Zero-phonon lines(ZPLs)associated with R_2 and N~- bands were observed in hydroxyl-doped sodium fluoride crystals irradiated by gamma rays at room temperature in the measured temperature range of 10-77 K.
The processing techniques for filtering noise, selecting threshold of grey level to segment chromosome from background, separating crossed chromosomes and aligning chromosomes were studied.
Following an improved C-banding procedure, all seven chromosomes of H. villosa were banded distinctively. The C-bands included proximal centromeric ones similar to N-bands and terminal and subterminal ones unique to C-banding, which facilitated the differentiation of H. villosa chromosomes from each other and from whtat chromosomes.
Seven complete chromosomes and nine telocentric chromosomes in telotrisomics of barley (Hordeum vulgare L.) were identified and designated by an improved Giemsa N-banding technique.
It is discussed whether the N-banded heterochromatin regions of Schistocerca contain that DNA fraction which is, like the Drosophila α-heterochromatin, underreplicated in polyploid nuclei.
Apart from minor variation in the prominence of certain bands, which were designated according to principles adopted in human cytology, the chief exceptions were the absence of bands 1p2, 1p4, 1q2, 1q4 and 7p6 from the N-banded karyotype of P.
The present paper is dealing with the investigation of the chromosome N-banding technique and the N-banding patterns in Hordeum vulgare,Triticum aestivum,Secale cereale,Vicia faba and Allium cepa.Two N-banding techniques were applied.First, the chromosome slides were stained with Giemsa solution.Second,the slides were treated in 1M NaH_2PO_4 solution at 92-94℃ for 3.5-8.5 min.After rinsing in tap water they were stained with Giemsa solution.The experiments have demonstrated that the ...
本文研究了大麦、小麦、黑麦、蚕豆、洋葱等染色体的 N 带带型鉴定技术。采用了两种 N 带技术:第一,将染色体标本在5%三氯醋酸(90℃,6分钟)-0.1NHCI(60℃,6分钟)处理,Giemsa染色;第二,染色体标本经 IM NaH_2PO_4(92—94℃,3.5—8.5分钟)处理,Giemsa 染色。试验证明 N 带技术简单、快速,带型清晰。带型分析表明,N 带并非专一地显示核仁组织者。将上述植物的 N 带与 C 带比较,在有些植物中虽然有些 N 带区与 C 带区一致,但也有些区域仅显示出 N 带而无 C 带或仅显示 C 带而无 N 带。为此,N 带技术与 C 带技术的结合使用,将对染色体鉴别十分有价值。N 带同 C 带一样也是细胞遗传学...
Karyotype of two-rowed wild barley (Hordeum spontaneum C. Koch) of Qing-Zang (Tibet) Plateau was essentially the same as that of the Middle East, and chromosome Gie-msa N-banding patterns of the former were similar to that of the latter. The results showed that H. spontaneum of Qing-Zang is closely related to that of the Middle East. Although there is slight difference between them which is only an intraspecific one. Meantime, it was found that there were a few significant interspecific differences be...
The present paper deals with the investigation of chromosome N-banding pattern in rice. It was found that all the 12 pairs chromosomes of cultivated rice possessed prominent banding, which shows a form of point.N-bands were mainly distributed near centromere in rice. In addition, interstitial bands, near terminal bands and terminal bands were also observed. Our results obtained showed that the form and position of N-bands of rice chromosome was different from common wheat, barl...
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