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| Studies on Sodium Naphthalene-1-acetate and Compound Sodium Nitrophenolate Enhancing Pepper Resistance to Stress under Intensity of Sub-optimal Temperature and Light |
| LI Wenke，HUANG Bin，LI Menglu，WANG Jun，SUN Mintao，YAN Yan，HE Chaoxing，YU Xianchang，LI Yansu* |
| （Institute of Vegetables and Flowers，Chinese Academy of Sciences，Beijing 100081，China） |
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Abstract Sodium naphthalene-1-acetate（SNA）improves plant stress resistance by promoting root system growth etc. methods. Compound sodium nitrophenolat（CSN）can also enhance plant stress resistance．In order to explore the promoting effect of 2 solution combination on pepper seedlings in suboptimal temperature and light environment，this paper took‘Longjiao 3’as test material，sprayed different concentrations of SNA and CSN（10 + 0 mg · L-1，0 + 70 mg · L-1，5 + 35 mg · L-1，10 + 70 mg · L-1）on papper seedlings, and studied the changes in their morphological and physiological indexes under suboptimal temperature and light environment〔（12 ± 2）℃ /（8 ± 2）℃，（150 ± 20）μmol · m-2 · s-1〕．The results showed that sub-optimal temperature and light environment could inhibit the growth of pepper seedlings. Spraying different concentrations of exogenous SNA and CSN could all promote pepper seedling growth，increase chlorophyll content，reduce chlorophyll a/b value，improve net photosynthetic rate，enhance activities of SOD and CAT enzymes，and increase endogenous hormones（IAA，iPA，BR）contents，among which the compound spraying effect of 5 mg · L-1 SNA and 35 mg · L-1 CSN was the best．To certain extent，the commond spraying with（5 + 35 mg · L-1）concentration could reduce the damage brought by sub-optimal temperature and light environment，thereby improved pepper seedlings stress resistance．
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Received: 29 March 2021
Published: 10 May 2021
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| Fund:山东省重大科技创新工程项目（2019JZZY010707），国家现代农业产业技术体系建设专项资金资助项目（CARS-25-C-01），中国农业科学院科技创新工程项目（CAAS-ASTIP-IVFCAAS），农业农村部园艺作物生物学与种质创制重点实验室项目 |
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| Cite this article: |
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LI Wenke,HUANG Bin,LI Menglu等. Studies on Sodium Naphthalene-1-acetate and Compound Sodium Nitrophenolate Enhancing Pepper Resistance to Stress under Intensity of Sub-optimal Temperature and Light[J]. China Vegetables, 2022, 1(2): 40-46.
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| URL: |
| https://www.cnveg.org/EN/ OR https://www.cnveg.org/EN/Y2022/V1/I2/40 |
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