论文部分内容阅读
研究结果表明，细叶扁蓿豆种子的千粒重和发芽率均高于扁蓿豆和阴山扁蓿豆。用磨擦和酸浸的方法，可有效地降低硬实率提高发芽率。幼苗长出第二片真叶时根部出现根瘤。扁蓿豆叶片具有一定的旱生解剖结构，侧脉维管束外有多层厚壁组织构成的维管束鞘。在不同的生态条件下，它们的外部形态（叶形、株形、根冠幅度等）有较大的差异，而其叶片的内部解剖结构（如叶片栅栏组织厚度、侧脉维管束鞘厚度等）相对较稳定。
The results showed that the 1000-grain weight and germination rate of the leaves of Medicago lutea were higher than that of Medicago falcata and Yinshan Medicago trichocarpa. With friction and acid leaching method, can effectively reduce the rate of hard real germination rate. Root nodules appear when the seedlings grow the second true leaves. Flat bean leaves have some xerophytic anatomy, lateral venous vascular bundle with multiple layers of thick walled tissue sheath. In different ecological conditions, their external morphology (leaf shape, plant shape, root width, etc.) are quite different, and its internal anatomy of the leaves (such as leaf palisade tissue thickness, lateral venous bundle sheath thickness, etc. ) Is relatively stable.