In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 10, No. 1 ( 2020-11-12)
Abstract:
Due to the accumulation of various useful traits over evolutionary time, emmer wheat ( Triticum turgidum subsp. dicoccum and dicoccoides , 2 n = 4 x = 28; AABB), durum wheat ( T. turgidum subsp. durum , 2 n = 4 x = 28; AABB), T. timopheevii (2 n = 4 x = 28; AAGG) and D genome containing Aegilops species offer excellent sources of novel variation for the improvement of bread wheat ( T. aestivum L., AABBDD). Here, we made 192 different cross combinations between diverse genotypes of wheat and Aegilops species including emmer wheat × Ae. tauschii (2 n = DD or DDDD), durum wheat × Ae. tauschii , T. timopheevii × Ae. tauschii , Ae. crassa × durum wheat, Ae. cylindrica × durum wheat and Ae. ventricosa × durum wheat in the field over three successive years. We successfully recovered 56 different synthetic hexaploid and octaploid F 2 lines with AABBDD, AABBDDDD, AAGGDD, D 1 D 1 X cr X cr AABB, D c D c C c C c AABB and D v D v N v N v AABB genomes via in vitro rescue of F 1 embryos and spontaneous production of F 2 seeds on the F l plants. Cytogenetic analysis of F 2 lines showed that the produced synthetic wheat lines were generally promising stable amphiploids. Contribution of D genome bearing Aegilops and the less-investigated emmer wheat genotypes as parents in the crosses resulted in synthetic amphiploids which are a valuable resource for bread wheat breeding.
Type of Medium:
Online Resource
ISSN:
2045-2322
DOI:
10.1038/s41598-020-76475-7
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
2615211-3
