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对披碱草和野大麦及其杂种F1与BC1代的形态特征进行了观察比较。结果表明 ,杂种F1外部形态特征偏向亲本披碱草 ,F1穗长超过披碱草 ,小穗长、每小穗小花数、颖长、稃长也超过双亲的平均值 ,体现出较强的杂种优势 ;杂种F1继承了野大麦短根茎和每节 3枚小穗的特性 ,正交、反交对F1植株颜色有明显影响 ,对F1其他形状没有明显影响 ;BC1代形态特征明显偏向轮回亲本野大麦 ,不同株系在外部形态上有较大变异 ;第一颖的形状可作为亲本和杂种的特征性状 ,以此作为鉴别杂种真伪的重要特征之一。
The morphological characteristics of Elymus dahuricus, Hordeum brevisubulatum, F1 and BC1 hybrids were observed and compared. The results showed that the external morphological characteristics of hybrid F1 tended to be the same as that of its parents, and the F1 spike length was longer than that of Elymus cauliflower and spikelet, and the number of flowers per spikelet, F1 hybrids F1 inherited the short rhizomes and the characteristics of three spikelets per section, orthogonal and anti-cross-F1 plants have a significant impact on the color, F1 has no significant impact on other shapes; BC1 generation morphological characteristics significantly biased to recurrent parents Barley, different strains in the external morphology has greater variation; the first Ying shape can be used as the parent and hybrid characteristics traits, as one of the important features to identify the authenticity of hybrids.