[1]徐垒,张莹,罗媛,等.黄腐酸对Ca(NO3)2胁迫下菜薹幼苗生长及生理生化特性的影响[J].江苏农业学报,2024,(08):1371-1378.[doi:doi:10.3969/j.issn.1000-4440.2024.08.002]
　XU Lei,ZHANG Ying,LUO Yuan,et al.Effect of fulvic acid on the growth and physiological and biochemical characteristics of Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee. under Ca(NO3)2 stress[J].,2024,(08):1371-1378.[doi:doi:10.3969/j.issn.1000-4440.2024.08.002]
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黄腐酸对Ca(NO3)2胁迫下菜薹幼苗生长及生理生化特性的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年08期
页码:
1371-1378
栏目:
遗传育种·生理生化
出版日期:
2024-08-30

文章信息/Info

Title:
Effect of fulvic acid on the growth and physiological and biochemical characteristics of Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee. under Ca(NO3)2 stress
作者:
徐垒1; 张莹1; 2; 罗媛1; 高富成1; 吴雪2; 曹凯2; 叶林1
(1.宁夏大学葡萄酒与园艺学院,宁夏银川750021；2.江苏省农业科学院农业设施与装备研究所/农业农村部长江中下游设施农业工程重点实验室,江苏南京210014)
Author(s):
XU Lei1; ZHANG Ying1; 2; LUO Yuan1; GAO Fucheng1; WU Xue2; CAO Kai2; YE Lin1
(1.College of Enology and Horticulture, Ningxia University, Yinchuan 750021, China；2.Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Protected Agricultural Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China)
关键词:
菜薹; 黄腐酸; Ca(NO3)2胁迫; 光合特性; 抗氧化
Keywords:
Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee.; fulvic acid; Ca(NO3)2 stress; photosynthetic characteristics; antioxidant
分类号:
TQ441.23
DOI:
doi:10.3969/j.issn.1000-4440.2024.08.002
文献标志码:
A
摘要:
土壤次生盐渍化会严重影响菜薹的产量及品质,黄腐酸作为一种全水溶性的有机物质,对缓解植物盐胁迫具有积极作用。本研究以金秋红二号红菜薹为试验材料,探究在Ca(NO3)2胁迫下外源施用黄腐酸对菜薹幼苗生长发育和生理生化指标的影响。结果表明,与15 mmol/L Ca(NO3)2（CK）相比，80 mmol/L Ca(NO3)2处理显著抑制了菜薹的生长,而与80 mmol/L Ca(NO3)2处理相比，80 mmol/L Ca(NO3)2+100 μmol/L黄腐酸处理可以显著缓解Ca(NO3)2对菜薹的抑制作用,促进菜薹幼苗的生长,增加菜薹幼苗的净光合速率及气孔导度。同时与80 mmol/L Ca(NO3)2处理相比，80 mmol/L Ca(NO3)2+100 μmol/L黄腐酸处理可以显著降低菜薹幼苗叶片相对电导率和丙二醛含量,减少O2·-、H2O2的积累,增强抗氧化酶(超氧化物歧化酶、过氧化氢酶、抗坏血酸酶)活性。上述结果表明,外源施用黄腐酸可以通过提高菜薹的光合和抗氧化能力来缓解Ca(NO3)2胁迫,本研究结果可为黄腐酸在缓解蔬菜盐胁迫中的应用提供理论依据。
Abstract:
The yield and quality of Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee. can be seriously affected by soil secondary salinization. As a full water-soluble organic substance, fulvic acid (FA) played an active role in relieving salt stress in plants. The effects of fulvic acid (FA) on the growth and physiological and biochemical indexes of B. campestris L. seedlings under Ca(NO3)2 stress were studied, using Jinqiuhong No.2 as the test material. The results showed that compared with 15 mmol/L Ca(NO3)2 (CK), 80 mmol/L Ca(NO3)2 treatment significantly inhibited the growth of B. campestris L., while compared with 80 mmol/L Ca(NO3)2 treatment, 80 mmol/L Ca(NO3)2 + 100 μmol/L fulvic acid treatment could significantly alleviate the inhibitory effect of Ca(NO3)2 on B. campestris L., promote the growth of B. campestris L. seedlings, and increase the net photosynthetic rate and stomatal conductance. At the same time, compared with 80 mmol/L Ca(NO3)2 treatment, 80 mmol/L Ca(NO3)2+ 100 μmol/L fulvic acid treatment could significantly reduce the relative electrical conductivity and malondialdehyde content in leaves of B. campestris L. seedlings, reduce the accumulation of O·-2 and H2O2, and enhance the activities of antioxidant enzymes (superoxide dismutase, catalase, ascorbate peroxidase). The results indicated that exogenous application of fulvic acid could alleviate Ca(NO3)2 stress by improving photosynthetic and antioxidant ability of B. campestris L.. The results of the study can provide a theoretical basis for the application of fulvic acid in relieving salt stress of vegetables.

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备注/Memo

备注/Memo:
收稿日期:2023-10-24基金项目:宁夏回族自治区重点研发计划项目(2021BBF02006)；国家重点研发计划项目(2021YFD1600300)作者简介:徐垒(2000-),男,山东菏泽人,硕士研究生,研究方向为蔬菜栽培学。(E-mail)m19853568090@163.com通讯作者:叶林,(E-mail)yelin.3993@163.com；曹凯,(E-mail)kcao@jaas.ac.cn
更新日期/Last Update: 2024-09-18