Semiquantitative analysis of lignin content in the culm by confocal laser scanning microscopy ( clsm ) showed that lignin contents are elevated in lodging - resistant varieties and this together with the anatomical features may provide higher culm strength resulting in increased lodging - resistance 因此,在超高产小麦品种的选育上,重视外源基因的引进,改进茎秆的结构特性及提高其木质素含量,可能是一个重要的选育方向。