MA Baopeng,WANG Yanling,WU Dan,et al.Induced Effect of Exogenous Regulators on the Cold Resistance of Tomato Seedlings[J].Northern Horticulture,2022,(01):47-53.[doi:10.11937/bfyy.20211528]
外源调节剂对番茄幼苗抗冻性的诱导效应
- Title:
- Induced Effect of Exogenous Regulators on the Cold Resistance of Tomato Seedlings
- 关键词:
- 冻害; 14-羟基芸苔素甾醇; SF-花粉多糖植物维生素C; QY-max; 抗氧化酶活性
- Keywords:
- freezing stress; 14-hydroxy brassinosterol; SF-pollen polysaccharide plant vitamin C; QY-max; antioxidant enzyme activity
- 文献标志码:
- A
- 摘要:
- 以“金桃”番茄为试材，提前3 d叶喷植物生长调节剂14-羟基芸苔素甾醇和SF-花粉多糖植物维生素C，研究了在0 ℃冻害胁迫下番茄幼苗叶片最大光合效率（QY-max）及抗氧化酶活性的变化,以期为提升番茄抗冻性研究提供参考依据。结果表明：单用或者复配均可有效缓解冻害对植株光合能力的损害，且尤以复配效果最好。抗氧化酶活性检测结果显示，在冻害胁迫下复配可显著提升番茄幼苗中过氧化物酶（POD）和过氧化氢酶（CAT）活性，推测复配可协同增效通过提升抗氧化酶来保护番茄冻害下的光合能力。
- Abstract:
- The ‘Jintao’ tomato was used as the test material,when plant growth regulator 14-hydroxy brassinosterol and SF-pollen polysaccharide plant vitamin C were sprayed three days in advance,the maximum photosynthetic efficiency (QY-max) and the antioxidant enzyme activity were studied under 0 ℃ freezing stress,in order to provide a reference for the study of tomato freezing resistance improvement.The results showed that both single item and the combination of them could effectively alleviate the damage of freezing damage to the photosynthetic capacity of the plants,and the latter had the best effect.Antioxidant activity test results showed that the spraying of the combination could significantly increase the peroxidase (POD) and catalase (CAT) enzyme activities in tomato seedlings under freezing stress.It was speculated that the usage of the combination could protect the photosynthetic ability of tomatoes by synergistically improve the antioxidant enzymes under freezing damage.
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备注/Memo
第一作者简介：马宝鹏（1987-），男，硕士，现主要从事植物生长调节剂等研究工作。E-mail:baopengma@gmail.com.责任作者：黄瑾（1982-），女，博士，工程师，现主要从事植物抗逆分子机理及植物生长调节剂应用等研究工作。E-mail:jinzhiscu@hotmail.com.收稿日期：2021-04-09