枸杞幼苗对NaCl处理的生理响应（英文）

Physiological Response of Chinese Wolfberry Seedling to Na Cl Stress

[目的]研究枸杞幼苗的耐盐性,为枸杞栽培奠定基础。[方法]以黑果枸杞和红果枸杞的盆栽苗为试材,用Na Cl溶液进行浇灌处理,测定两个枸杞品种叶片的细胞膜透性、丙二醛(MDA)、脯氨酸(Pro)和可溶性糖含量4个抗性生理指标,并分析其生理响应差异。[结果]Na Cl对枸杞的生理指标产生了显著的影响,两个枸杞品种的生理指标总体变化趋势一致,但变化程度不同。‘黑杞1号’的细胞膜透性、丙二醛(MDA)、脯氨酸(Pro)含量均呈先升高在下降的趋势,细胞膜透性和脯氨酸(Pro)含量在第45天时达到最高,丙二醛(MDA)含量在第30天时达到最高,可溶性糖含量呈下降趋势;‘宁杞7号’的细胞膜透性呈升高趋势,丙二醛(MDA)含量呈下降再升高趋势,在第30天时达到最高,脯氨酸(Pro)和可溶性糖含量均呈升高再下降趋势,在第45天时均达到最高。[结论]‘黑杞1号’和‘宁杞7号’对不同浓度Na Cl溶液均具有积极的盐分生理响应方式,且两品种间生理响应方式存在差异,‘黑杞1号’对Na Cl的适应性优于‘宁杞7号’。

[Objective] The present study was undertaken to understand the salt tolerance of Chinese wolfberry seedling and lay the foundation for the cultivation of Chinese wolfberry. [Method] Using the potted seedlings of Lycium ruthenicum and Lycium barbarum as test materials, water treatment in NaCI solution, The leaf cell membrane permeability, malondialdehyde （MDA）, proline （Pro） and soluble sugar content of two varieties of Chinese wolfberry were measured by NaCI solution treatment, and their physiological responses were analyzed. [Result] NaCI had a significant effect on the physiological index of Chinese wolfberry, and the physiological indexes of the two varieties were consistent, but the degree of change was different. The cell membrane permeability, malondialdehyde （MDA）, and proline （pro） content of Lycium chincnse cv. Heiqi 1 were first increasing and then decreasing , the cell membrane permeability and proline （pro） content in the 45^th day reached the highest, and the malondialdehyde （MDA） content in the 30th day reached the highest value, the soluble sugar content showed a downward trend. The cell membrane permeability of Lycium chincnse cv. Ningqi 7 increased, the malondialdehyde （MDA） content was first decreasing and then increasing, and at the 30^th day reached the highest value; proline （pro） and soluble sugar content were first increasing and then decreasing, and at the 45th day reached the highest value. [Conclusion] The Lycium chincnse Heiqi 1 and Lycium chincnse Ningqi 7 both had a positive physiological response model to different NaCI concentration treatment, but there were differences on the physiological response model to different NaCI treatment between the two cultivars, in which Lycium chincnse Heiqi 1 had better adaptability than Lycium chincnse Ningqi 7 had.