核农学报2017，Vol.31Issue(4)：803-808,6.DOI:10.11869/j.issn.100-8551.2017.04.0803
3个玉米品种苗期耐寒性鉴定
Identification of the Cold Tolerance of Three Maize Varieties in the Seedling Stage
摘要
Abstract
To identify cold tolerance of different maize varieties,Qingnong No.8,Zhengdan 958 and Nongdal08 were selected treated at the temperature of 4℃ and 10℃ in the seedling stage.The activities of superoxide dismutase (SOD),catalase (CAT),peroxidase (POD),and contents of malonadehyde (MDA) and soluble protein (SP) were detected.The results presented here showed that Qingnong No.8 was the best in cold tolerance from seven indexes including the SOD activity,POD activity,MDA content and the change rate of SOD activity,POD activity,SP content,CAT activity.However,other three indexes including CAT activity,MDA content and the change rate of SP content indicated that cold tolerance of Qingnong No.8 was the second among them.Nongdal08 and Zhengdan958 had different results in different physiological indexes.The SOD activity,POD activity and their rate of change,SP content and MDA content reflected that cold resistance of Nongda108 is better than Zhengdan958.However,other indicators including CAT activity and the change rate of it,MDA content and SP content reflected that cold resistance of Zhengdan958 was better than Nongda108.To sum extent this study provides a theoretical basis for the promotion of new maize variety Qingnong No.8 and the breeding of cold resistant varieties.关键词
玉米/苗期/耐寒性/生理生化指标/鉴定Key words
maize/seedling stage/cold tolerance/physiological and biochemical index/identification引用本文复制引用
王腾飞,裴玉贺,郭新梅,李军,宋希云..3个玉米品种苗期耐寒性鉴定[J].核农学报,2017,31(4):803-808,6.基金项目
国家自然基金(31371636),山东省现代农业产业技术体系玉米产业创新团队首席专家,山东省农业重大应用技术创新课题 （31371636）
