山东农业大学学报（自然科学版）2023，Vol.54Issue(6)：814-819,6.DOI:10.3969/j.issn.1000-2324.2023.06.003
不同去蜡粉砧木南瓜品种嫁接黄瓜对硝酸盐胁迫的抗性差异
Resistance Differences of De-blooming Rootstock Pumpkin Grafted with Cucumber under Nitrate Stress
摘要
Abstract
To compare the resistance differences to nitrate stress of wax-free rootstock pumpkin grafted cucumber,we conducted a resistance evaluation of 14 rootstock varieties(lines)under 140 mmol/L NO3-stress conditions.Varieties with significant resistance differences were selected for observation the changes in osmotic regulation,antioxidant capacity,and membrane lipid damage under salt stress.The results showed that four varieties including'Jingtai',had strong nitrate resistance;five varieties including'Huangchenggen 2',showed moderate resistance;and five varieties including'Gao You Liang',exhibited weak resistance.Compared with no stress treatment,under nitrate stress,the contents of proline and soluble sugar in'Jingtai'leaves increased by 83.84％and 125.45％respectively,'Huangchenggen 2'increased by 75.27％and 78.68％respectively,and'Gao You Liang'increased by 60.28％and 37.98％respectively.The activities of superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT)in'Jingtai'increased by 99.65％,101.51％,and 249.61％respectively,in'Huangchenggen 2'they increased by 66.06％,80.57％,and 198.46％respectively,and in'Gao You Liang'they increased by 42.83％,75.13％,and 196.44％respectively.The content of malondialdehyde(MDA)and the electrolyte leakage rates in'Jingtai','Huangchenggen 2',and'Gao You Liang'increased by 38.47％and 35.50％,36.90％and 43.44％,and 66.07％and 46.52％respectively.The research findings provide a basis for the selection and breeding of de-blooming,stress-tolerant pumpkin rootstock varieties for cucumber grafting.关键词
黄瓜/嫁接/去蜡粉砧木/硝酸盐胁迫/生理指标Key words
Cucumber/grafting/de-blooming rootstock/nitrate stress/physiological indicators分类
农业科技引用本文复制引用
李恒宇,黄代峰,陈晓璐,杜朗,张大龙,魏珉..不同去蜡粉砧木南瓜品种嫁接黄瓜对硝酸盐胁迫的抗性差异[J].山东农业大学学报（自然科学版）,2023,54(6):814-819,6.基金项目
国家自然科学基金面上项目(32072654) （32072654）
国家现代农业产业技术体系(CARS-23) （CARS-23）
