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| 枣离体果实水分吸收与质外体运输的研究 | |
| 引用本文： | 郝燕燕,赵丽琴,张鹏飞,张旭,郝大山,刘和,卢贵宾.枣离体果实水分吸收与质外体运输的研究[J].园艺学报,2013,40(3):433-440. |
| 作者姓名： | 郝燕燕 赵丽琴 张鹏飞 张旭 郝大山 刘和 卢贵宾 |
| 作者单位： | （1 山西农业大学园艺学院，山西太谷030801；2 山西林业职业技术学院，太原 030009；3 山西林业科学研究院，太 原030002） |
| 基金项目： | 国家自然科学基金项目，林业公益性行业科研专项 |
| 摘 要： | 为了揭示枣果吸收水分后引起的裂果机制，以‘壶瓶枣’膨大期与着色期果实为试材，分
别采用染液和清水浸泡枣果实、带叶果的木质化枣吊基部、果柄及去果柄后梗洼引入染液等处理，研究
果实水分吸收与质外体运输的途径及能力。结果表明：离体枣果实可以通过果柄、果面吸收水分，水分
经果柄木质部进入果实，后继续通过维管束或扩散作用运输到果实各个部位。膨大期青果维管束运输能
力强，着色期果实梗洼下空腔变大，果柄维管束与果实内维管束的连接发生部分中断，维管束运输能力
下降；而此时果实表皮细胞增大，排列疏松，通过果面吸水能力增大。 |
| 关 键 词： | 枣 果实 水分 维管束 质外体运输 |
Studies on Water Uptake and Apoplastic Transport in Detached Chinese Jujube Fruits |
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| HAO Yan-Yan,ZHAO Li-Qin,ZHANG Peng-Fei,ZHANG Xu,HAO Da-Shan,LIU He,LU Gui-Bin.Studies on Water Uptake and Apoplastic Transport in Detached Chinese Jujube Fruits[J].Acta Horticulturae Sinica,2013,40(3):433-440. | |
| Authors: | HAO Yan-Yan ZHAO Li-Qin ZHANG Peng-Fei ZHANG Xu HAO Da-Shan LIU He LU Gui-Bin |
| Institution: | （1College of Hoticulture，Shanxi Agriculture University，Taigu，Shanxi 030801，China；2 Shanxi College of Forestry Technology，Taiyuan 030009，China；3Shanxi Academy of Forestry Sciences，Taiyuan 030002，China） |
| Abstract: | The objective of our study was to investigate the mechanism of fruit cracking caused by water uptake in Zizyphus jujuba Mill. The easily crack variety of jujube‘Huping’was used as material. Apoplastic dye solution was used as the tracer to monitor the water uptake and transport in detached fruits and branches with leaves and fruits. The results showed that water uptake by detached jujube fruits occurred through pedicel end and fruit surface. Water entered into fruits through pedicel xylem vascular， and accumulated in cavity under stalk. The vascular under epidermis and around fruit stone were stuffed by dye solution，and the speed of dye solution transport in the vascular bundles were high during fruit swell period，however，the distribution of stuffed dye in vascular bundles decreased and the speed of dye solution transport decreased during coloring period. This is because of breakoff of vascular bundles and non-functional xylem. While the ability of water uptake through fruit surface was enhanced during coloring period，responding to enlarged and loosen epidermal cells. It suggested that the efficiency of water transport in vascular of jujube fruits was decreased from fruit coloring stage，this led to water uptake through the fruit surface become potential importance to fruit crack during raining. |
| Keywords: | jujube fruit water vascular bundle apoplastic transport |
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