| 水分亏缺对番茄叶片气孔特性及叶绿体超微结构的影响 |
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| 引用本文： | 齐红岩,刘洋,刘海涛.水分亏缺对番茄叶片气孔特性及叶绿体超微结构的影响[J].西北植物学报,2009,29(1). |
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| 作者姓名： | 齐红岩 刘洋 刘海涛 |
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| 作者单位： | 沈阳农业大学,园艺学院,辽宁省设施园艺重点实验室,辽宁省工厂化高效农业工程技术研究中心,沈阳,110161 |
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| 基金项目： | 国家科技支撑计划，辽宁省博士科研启动基金，辽宁省教育厅青年基金，沈阳市技术创新开发研究基金 |
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| 摘 要： | 以'辽园多丽'番茄为材料,在塑料大棚内设置每桶2 000(CK)、1 500(Ti),1 000(Tz)、506(T3)和300 mL(T4)5个灌水量处理,利用扫描和透射电镜观察了处理结束时和恢复灌水10 d后番茄叶片的气孔特性和叶绿体的超微结构.结果表明:(1)番茄叶片的总气孔密度、关闭的气孔数及其与总气孔密度的比值随着水分亏缺程度的增加而增大.气孔器的长、宽和开张度则逐渐变小;(2)恢复灌水10 d后,番茄叶片总气孔密度和关闭气孔数均下降,气孔器开张度增大.T,和T2基本恢复至CK水平.但T3和T4与CK差距仍较大.(3)水分亏缺条件下,叶绿体形状细长.被膜完整度下降,T3和T4处理的被膜解体;单位叶绿体基粒数下降,脂滴和淀粉粒数增加;T3处理的叶绿体片层结构松散弯曲,而T4无完整片层结构;恢复灌水后10 d,轻度水分亏缺处理(T1和T2)的叶片气孔和叶绿体超微结构恢复正常,而严霞水分亏缺(T3和T4)却对番茄叶片光合器官造成不可逆伤害,严重影响其光合作用.
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| 关 键 词： | 水分亏缺程度 番茄 气孔密度 叶绿体超微结构 |
Effect of Water Deficit on Stomatal Characteristics and Ultrastructure of Chloroplast in Tomato Leaves |
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| QI Hong-yan,LIU Yang,LIU Hai-tao.Effect of Water Deficit on Stomatal Characteristics and Ultrastructure of Chloroplast in Tomato Leaves[J].Acta Botanica Boreali-Occidentalia Sinica,2009,29(1). |
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| Authors: | QI Hong-yan LIU Yang LIU Hai-tao |
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| Institution: | College of Horticulture;Shenyang Agricultural University;Key Laboratory of Protected Horticulture of Liaoning Province;Engineering and Technology Center of Efficient Protected Agriculture;Shenyang 110161;China |
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| Abstract: | The variety of 'Liaoyuanduoli' was cultivated in the plastic tunnel,and five treatments of different irrigation levels were conducted.The amount of irrigation per bucket was 2 000 mL as control(CK),1 500 mL(T1),1 000 mL(T2),500 mL(T3) and 300 mL(T4),respectively.Stomatal characteristics and ultrastructure of chloroplast in tomato leaves were investigated by using scanning and transmission electron microscopes at the end of water deficit and 10 d after water recovering.Total stomatal density,the closed stoma... |
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