NBS-domains genes amplification model related to gene duplication events in Vigna angularis.

  The curved lines within inner circle, colored by green, linked paralog pairs on Vigna angularis 11 chromosomes produced by LCT (b). NBS-domains subfamily genes with darkgreen (NBS-TNL), crimson (NBS-TNx), darkorange" (NBS-xNL) and navy (NBS-xNx). Colored curved lines linked nodulation gene pairs with Ks < 0.15.