不同醋栗品种对NaCl胁迫的光合生理响应比较分析

doi:10.6048/j.issn.1001-4330.2021.05.006

摘要/Abstract

摘要： 【目的】研究不同浓度NaCl胁迫下醋栗叶片的光合指标及生理指标的影响差异。【方法】选用3个醋栗品种坠玉、彩虹和红灯笼,选取2年生扦插苗,测定NaCl浓度0.2%、0.4%、0.6%及CK(0.259%)处理下,3个品种的5个光合指标及8个生理指标。运用显著性分析、多重比较及隶属函数对其耐NaCl性比较综合评定。【结果】(1)各品种醋栗叶片的光合参数中光合速率(Pn)、水分利用率(WUE)总体呈上升趋势,蒸腾速率(Tr)、气孔导度(Gs)和胞间CO₂浓度(Ci)总体呈先升后降趋势。(2)红灯笼的可溶性糖和脯氨酸含量呈上升趋势,坠玉和彩虹都呈先升后降趋势。3个品种的电导率和丙二醛含量呈下降趋势。彩虹和红灯笼的叶绿素呈上升趋势,坠玉呈先降后升趋势。彩虹和红灯笼的SOD和POD均呈先升后降趋势,坠玉呈下降趋势。坠玉和红灯笼的CAT总体呈上升趋势,彩虹的CAT呈现先升后降趋势。【结论】彩虹和红灯笼耐NaCl能力均较强。

关键词: 醋栗; NaCl胁迫; 光合参数; 生理指标; 隶属函数

Abstract: 【Objective】 To study photosynthetic and physiological responses of three varieties of gooseberry: Zhuiyu, Caihong and Hongdenglong to salt stress. 【Methods】 The NaCl concentrations of 0.2%, 0.4%, 0.6% and 5 photosynthetic indexes and 8 physiological indexes of 3 varieties under CK(0.259%) treatment were determined by 2-year cutting seedlings. The effects of different concentrations NaCl stress on photosynthetic indexes and physiological indexes of chestnut leaves were studied, and the NaCl tolerance was evaluated by significance analysis, multiple comparison and membership function. 【Results】 (1)The photosynthetic rate (Pn) and water use efficiency (WUE) of the various varieties of gooseberry leaves showed an overall upward trend, while the transpiration rate (Tr), stoma conductance (Gs), and CO₂ concentration (Ci) showed general trend of increasing first and then decreasing. (2) The soluble sugar and proline content of Hongdenglong showed an upward trend, and both Zhuiyu and Caihong showed a rising trend and then a decreasing trend. The electrical conductivity and malondialdehyde content of the three varieties showed a decreasing trend. Chlorophyll of Caihong and Hongdenglong showed an upward trend, and Zhuiyu showed a downward trend followed by an upward trend. The SOD and POD of Caihong and Hongdenglong increased first and then decreased, and Zhuiyu declined. The CAT of Zhuiyu and Hongdenglong were generally on the rise, and the CAT of Caihong rose first and then fell down. 【Conclusion】 Caihong and Hongdenglong have strong salt tolerance.

Key words: gooseberry; salt stress; photosynthetic parameters; physiological indexes; membership function

中图分类号:

S664.2

孙雅丽, 褚奋飞, 故丽米热·卡克什, 巴哈尔古丽·阿尤甫, 古丽江·许库尔汗. 不同醋栗品种对NaCl胁迫的光合生理响应比较分析[J]. 新疆农业科学, 2021, 58(5): 829-837.

SUN Yali, CHU Fenfei, Gulimirei Kakeshi, Baharguli Ayupu, Gulijiang Xukuerhan. Comparative Analysis of Photosynthetic Physiological Responses of Different Gooseberry Varieties to Salt Stress[J]. Xinjiang Agricultural Sciences, 2021, 58(5): 829-837.

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