Introgression of Aegilops mutica genes into common wheat genome

• Published in: Cytology and genetics Vol. 52; no. 1; pp. 21 - 30
• Main Authors: Iefimenko, T. S., Antonyuk, M. Z., Martynenko, V. S., Navalihina, A. G., Ternovska, T. K.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2018; Springer Nature B.V
• Subjects: Aegilops mutica; Biomedical and Life Sciences; Biomedicine; Chromosomes; Deoxyribonucleic acid; DNA; Gene pool; Genomes; Goat grass; Human Genetics; Hybridization; Hybrids; Triticum aestivum; dot-blot hybridization; karyotype; multiple introgressions; introgression lines; common wheat; wheat morphological characters
• ISSN: 0095-4527; 1934-9440
• DOI: 10.3103/S0095452718010048

Introgression of genetic material from wheat wild relatives into the common wheat genome remains important. This is a natural and inexhaustible source of enrichment of the wheat gene pool with genes that improve wheat’s adaptive potential. Hexaploid lines F 4 –F 5 of wheat type were developed via hybridization of common wheat Aurora (AABBDD) and genome-substituted amphidiploid Aurotica (AABBTT). The hexaploid genome of the latter includes the diploid genome TT from wheat relative Aegilops mutica instead of subgenome DD of common wheat. F 1 –F 3 hybrids had limited self-fertility, which had substantially increased for some derivatives in F 4 –F 5 . For all generations, development of the lines was accompanied by cytogenetic control of the chromosome numbers. The chromosome numbers varied in general from 33 to 46 depending upon generation. In most descendants, that number was 42 chromosomes in F 4 when plants with chromosome numbers 40–44 were selected in each generation. F 5 lines originate from nine selffertile F 2 plants, differ from Aurora according to some morphological characters, and have alien DNA in their genome as was demonstrated by DNA dot-blot hybridization with genomic DNA of Aegilops mutica as a probe.