REAL

Cytomolecular identification of individual wheat-wheat chromosome arm associations in wheat-rye hybrids

Megyeri, Mária and Molnár-Láng, Márta and Molnár, István (2013) Cytomolecular identification of individual wheat-wheat chromosome arm associations in wheat-rye hybrids. CYTOGENETIC AND GENOME RESEARCH, 139 (2). pp. 128-136. ISSN 1424-8581

[img]
Preview
Text
MegyeriMCGR2002F5F.pdf

Download (218kB) | Preview

Abstract

Chromosome pairing in the meiotic metaphase I of wheatrye hybrids has been characterized by sequential genomic and fluorescent in situ hybridization allowing not only the discrimination of wheat and rye chromosomes, but also the identification of the individual wheat and rye chromosome arms involved in the chromosome associations. The majority of associations (93.8%) were observed between the wheat chromosomes. The largest number of wheat-wheat chromosome associations (53%) was detected between the A and D genomes, while the frequency of B-D and A-B associations was significantly lower (32 and 8%, respectively). Among the A-D chromosome associations, pairing between the 3AL and 3DL arms was observed with the highest frequency, while the most frequent of all the chromosome associations (0.113/ cell) was found to be the 3DS-3BS. Differences in the pairing frequency of the individual chromosome arms of wheat-rye hybrids have been discussed in relation to the homoeologous relationships between the constituent genomes of hexaploid wheat.

Item Type: Article
Uncontrolled Keywords: Chromosome pairing, FISH, GISH, Meiosis, Wheat
Subjects: Q Science / természettudomány > QK Botany / növénytan
S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 10 Dec 2013 13:05
Last Modified: 10 Dec 2013 14:34
URI: http://real.mtak.hu/id/eprint/7934

Actions (login required)

Edit Item Edit Item