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[目的]比较八棱海棠和新疆野苹果在不同盐浓度下叶片组织解剖结构的变化,分析其耐盐性,为我区南疆盐渍化土壤条件下苹果的商业化提供砧木资源。[方法]试验以盆栽的八棱海棠和新疆野苹果为试验材料,用8 g/L的NaCl溶液进行盐胁迫处理,以只浇灌Hoagland完全营养液作为对照(CK),在处理第20天取样,采用石蜡制片法制作切片,测量出八棱海棠和新疆野苹果的叶片、上表皮、下表皮、栅栏组织和海绵组织指标,观察分析八棱海棠和新疆野苹果叶片的解剖结构。[结果]光镜显微结构表明,与对照相比,在盐胁迫环境下,八棱海棠和新疆野苹果的叶片厚度、上下表皮、海绵组织发生不同程度的加厚,而栅栏组织厚度减小。与新疆野苹果相比,8 g/L NaCl处理的八棱海棠叶片细胞结构损伤较小,能够较好地保持细胞结构的完整性。[结论]八棱海棠对盐胁迫的适应能力高于新疆野苹果,对盐胁迫表现出较强的适应性。
[Objective] The aim was to compare the anatomical structure of leaves of Malus xingshuensis and Xinjiang Malus xingshuensis at different salt concentrations, analyze its salt tolerance, and provide the rootstock resources for the commercialization of apple in the southern Xinjiang salinization soil. [Method] The experiment was conducted with potted Palus ciliata and Xinjiang wild apple as test material, salt stress treatment with 8 g / L NaCl solution, Hoagland complete nutrient solution as CK only, sampling on the 20th day , The slices were made by paraffin method, and the indexes of leaves, epidermis, epidermis, palisade tissue and spongy tissue of Malus sieboldii and Xinjiang wild apple were measured. The anatomical structure of Malus baccata and Xinjiang wild apple was observed and analyzed. [Result] The microscopic structure of light microscope showed that compared with the control, the leaf thickness, upper and lower epidermis and spongy tissue of thrips of Malus baccata and Xinjiang wild apple were thickened to some extent and the thickness of palisade tissue was decreased under salt stress . Compared with Xinjiang wild apple, 8g / L NaCl treatment Bailuangtang leaf cell damage less structural cells, can better maintain the integrity of cell structure. [Conclusion] Begonia sempervilii was more adaptive to salt stress than wild apple and showed strong adaptability to salt stress.