Preferential Subgenome Elimination and Chromosomal Structural Changes Occurring in Newly Formed Tetraploid Wheat-Aegilops ventricosa Amphiploid (AABBD^vD^vN^vN^v).

ABSTRACT: Artificial allopolyploids derived from the genera Triticum and Aegilops have been used as genetic resources for wheat improvement and are a classic example of evolution via allopolyploidization. In this study, we investigated chromosomes and subgenome transmission behavior in the newly formed allopolyploid of wheat group via multicolor Fluorescence in situ hybridization (mc-FISH), using pSc119.2, pTa535, and (GAA)₇ as probe combinations, to enabled us to precisely identify individual chromosomes in 381 S₃ and S₄ generations plants derived from reciprocal crosses between Ae. ventricosa (D^vD^vN^vN^v) and T. turgidum (AABB). A higher rate of aneuploidy, constituting 66.04-86.41% indivi

SUBMITTER: Zhang J 

PROVIDER: S-EPMC7235383 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature