‘京枣39’果实膨大期解剖结构特性研究

为探讨枣果的裂果机理，笔者采用显微法对‘京枣39’新品种不同位置果实处于膨大期时的角质层、表皮、亚表皮、中果皮、维管束和空腔等解剖结构及其变化规律进行了研究。结果表明：随着果实的逐渐发育成熟，枣果体积逐渐增大，角质层厚度、表皮厚度、亚表皮细胞大小、中果皮细胞大小和维管束粗细的变化趋势一致，均呈现出逐渐增大的趋势，空腔大小的变化趋势略有差异，呈现出“低-高-低”单峰变化；果实膨大期和着生方向对于枣果解剖结构均有显著性影响。

Study on Anatomical Structure Characteristics of Zizyphus Jujuba ‘Jingzao39’in the Stage of Fruit Enlargement

To investigate the cracking mechanism of jujube fruit,the changes and the anatomical structures of Zizyphus Jujuba‘Jingzao39’fruit and the stage of enlargement in different locations including cuticle,epidermis,sub-epidermal cell,mesocarp cells,the vascular thickness and the size of cavity were studied by microscopy in this text. The results showed that jujube fruit increased in volume with the gradual development of mature fruit,the changing trends of the cuticle thickness,the epidermal thickness,the size of sub-epidermal cell,the size of mesocarp cell and the vascular thickness were consistent,showed a gradually increasing trend. The changing trends of the size of cavity was different,showed‘low-high-low＇single-peak curve.