安徽农业大学学报2017，Vol.44Issue(3)：525-529,5.DOI:10.13610/j.cnki.1672-352x.20170524.027
2,4-表油菜素内酯(EBR)对菜用甘薯抗寒生理生化的影响
Effects of 2, 4-epibrassinolide (EBR) on cold resistance-related physiological-biochemical indexes of vegetable sweet potato
摘要
Abstract
The cold intolerance greatly restricted the supply of vegetable sweet potato in early spring,autumn and winter.By using vegetable sweet potato'Xucai-1',this research explored the effects of 2,4-epibrassinolide (EBR) spraying treatment on the cold resistance-related physiological-biochemical indexes in sweet potato leaves under cold stress.Our results showed that spraying 0.1 mg·L-1 EBR was most effective.Within 48 hours of cold stress (8℃),the activities of three anti-oxidases (CAT,POD and SOD) were significantly higher than those of the control.Of three osmotic adjustment substances (soluble protein,soluble sugar and proline),the level of soluble protein had greatly increased and the relative electrical conductivity and MAD content which represented the extent of cellular damage were lower compared with the control.Overall,exogenous EBR treatment could increase the activity of anti-oxidases and the content of osmotic adjustment substances,and reduce the cell membrane damage of sweet potato leaves.Spraying of EBR could enhance the resistance of vegetable sweet potato to cold stress.关键词
EBR/菜用甘薯/低温胁迫/抗寒生理生化Key words
EBR/vegetable sweet potato/cold stress/cold resistance-related physiological-biochemical indexes分类
农业科技引用本文复制引用
张小贝,祝志欣,南文卓,孙言博,朱国鹏..2,4-表油菜素内酯(EBR)对菜用甘薯抗寒生理生化的影响[J].安徽农业大学学报,2017,44(3):525-529,5.基金项目
热作无公害生产技术集成与示范推广(15RZNJ-57)和优质富硒菜用甘薯周年生产技术示范与推广(HNXH201530)共同资助. （15RZNJ-57）
