1997
DOI: 10.1080/00087114.1997.10797402
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Cytological association between a knob on the short arm of chromosome 2 of maize and thelatent-1supergene

Abstract: lAC), Campinas, SP, Brasil; * S.T.E. Calculo, lAC; ** S. Milho e C. Diversos; (t) Deceased.SUMMARY -C-banding technique was applied in some maize materials with the purpose of verifing cytogenetical association between chromosome 2S knob and the presence and expression of latent-1 supergene and also mitotic chromosome characterization. Materials chosen were IP 48-5-3 Cateto Assis Brasil, its isoline IP 48-5-3-lte-1 earring latent-1 factor and Michoacan 21-1-104 latent-1 donnor. C-hand number obtained was 3.26 … Show more

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“…Although the secondary constrictions and satellite segments were not C-banded, in pachytene nucleolar chromosomes from these coffee species Pinto-Maglio and Cruz (1987) observed heterochromatic chromomeres densely stained with propionic carmine in these regions and segments. The absence of C-band formation in the satellite segment and/or in the secondary constriction has been reported in some monocot and dicot plants, as in two South American races of maize (Pierozzi et al 1997), or in Limodorum abortivum (D'Emerico et al 1999) or as in Arachis species (Pierozzi et al 2001). It is likely that the lack of heterochromatic C-band formation in these regions of the four coffee species (1) may be related to the existence of another type of heterochromatin, such as that observed in maize (González et al 2009); or (2) may be a consequence of the methodological variant used in this research which impaired the C-band formation in these regions.…”
Section: Discussionmentioning
confidence: 99%
“…Although the secondary constrictions and satellite segments were not C-banded, in pachytene nucleolar chromosomes from these coffee species Pinto-Maglio and Cruz (1987) observed heterochromatic chromomeres densely stained with propionic carmine in these regions and segments. The absence of C-band formation in the satellite segment and/or in the secondary constriction has been reported in some monocot and dicot plants, as in two South American races of maize (Pierozzi et al 1997), or in Limodorum abortivum (D'Emerico et al 1999) or as in Arachis species (Pierozzi et al 2001). It is likely that the lack of heterochromatic C-band formation in these regions of the four coffee species (1) may be related to the existence of another type of heterochromatin, such as that observed in maize (González et al 2009); or (2) may be a consequence of the methodological variant used in this research which impaired the C-band formation in these regions.…”
Section: Discussionmentioning
confidence: 99%