| 果树叶片滞尘对其光合速率和耗水特性的影响 |
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| 引用本文： | 胡梦玲,阿丽亚·拜都热拉,刘丽,张纯曦,甄敬.果树叶片滞尘对其光合速率和耗水特性的影响[J].新疆农业科学,2019,56(11):2032-2042. |
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| 作者姓名： | 胡梦玲 阿丽亚·拜都热拉 刘丽 张纯曦 甄敬 |
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| 作者单位： | 1.新疆农业大学林学与园艺学院,乌鲁木齐 830052; 2.干旱区林业生态与产业技术重点实验室,乌鲁木齐 830001 |
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| 基金项目： | 中国博士后科学基金“干旱区城市典型绿地对PM2.5等颗粒物浓度的影响”中国博士后科学基金(第 61批,185789); 2016年度天池计划百名博士项目;国家自然科学基金面上项目“绿洲城市园林及其配置结构对大气颗粒物的调控机制研究”,(31770750);国家自然科学基金青年基金(31600572);“乌鲁木齐市快速公路林带对PM2.5等颗粒物的阻滞作用研究”(2017.01-2019.12) |
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| 摘 要： | 【目的】 研究果树叶片在滞尘和未滞尘两种状态下对光合速率变化特征及耗水特性的影响。【方法】 选取四种果树通过LI-6400XT光合仪在连续时间段内测定清洗和未清洗的叶片,分析其光合速率和水分利用效率变化特征。【结果】 单位叶面积滞尘量核桃最大,其次是苹果和杏,库尔勒香梨单位面积滞尘量最小;未清洗叶片光合速率变化:库尔勒香梨>核桃>苹果>杏,清洗叶片光合速率依次为库尔勒香梨>苹果>核桃>杏;杏、核桃、库尔勒香梨和苹果水分利用效率均存在显著差异。【结论】 叶面滞尘对植物的光合作用速率产生负面影响,植物滞尘与其叶片形态结构(叶表面沟槽等)有密切关系,植物叶片形态结构间接对光合作用产生影响。四种果树叶片清洗与未清洗对环境因子的变化有不同的反应,清洗后叶片对环境变化响应更快。表明叶片清洗后Pn、Gs、Ci、E与水分利用效率、光合速率相关性更弱,叶片滞尘状态下水分利用效率和光合速率受生理指标因子的影响更大。
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| 关 键 词： | 水分利用效率 光合速率 果树滞尘 |
| 收稿时间： | 2019-08-01 |
Effect of Dust Retaining on Photosynthetic Rate and Water Consumption Characteristics of Fruit Leaves |
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| HU Meng-ling,Aliya Baiduerla,LIU Li,ZHANG Chun-xi,ZHEV Jin.Effect of Dust Retaining on Photosynthetic Rate and Water Consumption Characteristics of Fruit Leaves[J].Xinjiang Agricultural Sciences,2019,56(11):2032-2042. |
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| Authors: | HU Meng-ling Aliya Baiduerla LIU Li ZHANG Chun-xi ZHEV Jin |
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| Institution: | 1.College of Forestry and Horticulture,Xinjiang Agricultural University , Urumqi 830052, China; 2.Key Laboratory of Forestry Ecology and Industry Technology in Arid Region, Education Department of Xinjiang,Urumqi 830052 |
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| Abstract: | 【Objective】 In this paper the photosynthetic rate change characteristics and water consumption characteristics under the conditions of leaves with dust and without dust were analyzed.【Method】 Four fruit trees were selected to measure the washed and unwashed leaves in a continuous time period by LI-6400XTphotosynthesis measuring system. The characteristics of photosynthetic rate and water using efficiency were analyzed.【Results】 The results showed that the leaf area had the largest amount of dust, followed by Malus domestica (apple) and Armeniaca vulgaris Lam.(apricot), and the Pyrus spp (Korla pear) had the smallest amount of dust retention. The unwashed leaves` photosynthetic rates variated in the following order: Pyrus spp > Juglans regia L.(walnut ) > Malus domestica > Armeniaca vulgaris Lam. The waashed leaves` variated as Pyrus spp > Malus domestica > Juglans regia L.> Armeniaca vulgaris Lam.Water using efficiency of Armeniaca vulgaris Lam,Juglans regia L., Pyrus spp, Malus domestica were significantly different. 【Conclusion 】 Dust retaining had a negative effect on the photosynthesis rate of plants. Dus tretention ability was closely related to its leaf morphology (leaf surface groove, etc.), so plant leaf morphology and structure indirectly affect its` photosynthesis. The cleaned and unwashed ones of the four fruit leaves had different responses to environmental factors, and the leaves responded more sensitive to environmental variations after washing. Correlation analysis showed that the correlations between Pn, Gs, Ci, E and water use efficiency and photosynthetic rate were weaker after leaf cleaning, indicating that water use efficiency and photosynthetic rate were more affected by physiological index factors under dust retention state. |
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| Keywords: | water use efficiency photosynthetic rate fruit tree dust retention |
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