野生白刺和碱蓬的叶水势、表皮解剖结构与耐盐性

天津农学院学报 ›› 2013, Vol. 20 ›› Issue (3): 5-8.

野生白刺和碱蓬的叶水势、表皮解剖结构与耐盐性

杨静慧^1,2, 孟娜¹, 左凤月³, 刘艳军^1,2, 李建科^1,2

1. 天津农学院园艺系,天津 300384;
2. 天津市中日农村环境资源合作研究中心,天津 300384;
3. 西南大学园艺园林学院,重庆 400715

收稿日期:2013-03-01 发布日期:2019-10-21
作者简介:杨静慧（1961-）,女,甘肃兰州人,教授,博士,主要从事园艺植物栽培、抗逆生理和分子育种研究。E-mail：jinghuiyang2@yahoo.com.cn。联系电话：（022）23783819
基金资助:
国家农业科技成果转化资金项目"耐盐耐旱林、草资源高效培育技术集成及重盐碱地、旱荒地改良示范"（2011GB2A100003）; 天津农学院科技发展基金项目"白刺耐盐生理、生化机制研究"（012N01）

Leaf Water Potential, Anatomical Structure of Leaf Epidermis and Leaf Salt-tolerant Characteristics of Wild Nitraria Tangutorum B. and Suaeda glauca B.

YANG Jing-hui^1,2, MENG Na¹, ZUO Feng-yue³, LUI Yan-jun^1,2, LI Jian-ke^1,2

1. Department of Horticulture, Tianjin Agricultural University, Tianjin 300384, China;
2. China-Japan (Tianjin) Collaborative Research Center for the Rural Environment and Resource, Tianjin 300384, China;
3. College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China

Received:2013-03-01 Published:2019-10-21

摘要/Abstract

摘要： 为了解强耐盐植物的植株解剖结构与耐盐性的关系,以野生白刺和碱蓬为试材,通过徒手制片法,分析了叶气孔密度和开张度、表皮毛、细胞后含物和水势。结果显示：盐胁迫下,白刺叶水势是碱蓬的1.5倍,气孔开张度是其2.7倍,表皮毛数量是其26倍,但气孔密度仅是碱蓬的57%。分析认为：碱蓬耐盐与其水势较低、气孔关闭、水分散失少有关,而且其肉质圆柱形叶容易维持较低的水势;而白刺的耐盐与其叶片气孔密度低、表皮毛多、水分蒸发少有关,而且其叶表细胞中大量的褐色后含物对细胞的保水、抗氧化和耐盐碱起到了重要作用。

关键词: 气孔密度, 气孔开张度, 表皮毛, 后含物, 盐生植物

Abstract: In order to understand the relationship between the anatomical structure and the salt-tolerant characteristics of strong salt-tolerance plants, the stomatal density, stomatal aperture, epidermal hair, ergastic substance and water potential of the leaves of wild Nitraria Tangutorum B. and Suaeda glauca B. were measured by quick section and microscopic examination. The results show that Nitraria was 50% more on leaf water potential, 1.7 times more on stomatal aperture, 25 times more on epidermal hair, but 43% less on stomatal density than Suaeda. It was inferred that the salt tolerance of Suaeda should be relate to the decrease of water potential and the stomatal aperture in soft, succulent and rounded leaves, and Nitraria should be connected with the lower stomatal density and a lot of epidermal hair. Furthermore, a mass of brown ergastic substance in cells of Nitraria should play an important role on its water holding, antioxidation and salt tolerance.

Key words: stomatal density, stomatal aperture, epidermal hair, ergastic substance, salt-tolerant plant

中图分类号:

S718

杨静慧, 孟娜, 左凤月, 刘艳军, 李建科. 野生白刺和碱蓬的叶水势、表皮解剖结构与耐盐性[J]. 天津农学院学报, 2013, 20(3): 5-8.

YANG Jing-hui, MENG Na, ZUO Feng-yue, LUI Yan-jun, LI Jian-ke. Leaf Water Potential, Anatomical Structure of Leaf Epidermis and Leaf Salt-tolerant Characteristics of Wild Nitraria Tangutorum B. and Suaeda glauca B.[J]. Journal of Tianjin Agricultural University, 2013, 20(3): 5-8.

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