| 摘要: |
| 以大五星枇杷幼果为试验试材,在自然低温胁迫下,研究不同浓度的聚天冬氨酸锰(MSOD)喷施枇杷幼果后的抗氧化酶活性、细胞膜透性及丙二醛含量。结果表明:不同浓度MSOD(5.0、12.5、20.0 mg/L)均能提高幼果抗氧化酶系统中的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)和过氧化物酶(POD)的活性、减少细胞膜透性和丙二醛(MDA)含量。而在试验浓度范围内,12.5 mg/L的MSOD处理为最佳喷施浓度。 |
| 关键词: 低温胁迫 枇杷 抗氧化酶 聚天冬氨酸锰 |
| DOI：10.3969/j.issn.1000-3142.2014.05.021 |
| 分类号:Q945.78; S661.9 |
| Fund project: |
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| Cold resistance mechanism study on effect of exogenous SOD under low temperature stress of young loquat fruits |
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WANG Xiao-Xiao, WANG Zhi-Hui*, XIONG Bo, LIAO Feng-Ling,
FAN Qian-Qian, GAO Jing-Fei, ZHANG Ting-Ting
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Department of Horticulture, Sichuan Agricultural University, Ya'an 625014, China
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| Abstract: |
| Young loquat fruits'activities of antioxidant enzymes,cell membrane permeability and content of malondialdehyde(MDA)after spraying different concentrations of Poly-aspartic Mangan(MSOD)under low temperature stress were studied. The results showed that MSOD with different concentrations(5.0,12.5,20.0 mg/L)could reduce cell membrane permeability and content of MDA and enhance the activities of superoxide dismutase(SOD),catalase(CAT),ascorbate peroxidase(APX)and peroxidase(POD),the concentration of 12.5 mg/L had the best effect. |
| Key words: low temperature stress Eriobotrya japonica antioxidant enzymes Poly-aspartic Mangan |
