山西农业大学学报（自然科学版）2019，Vol.39Issue(6)：26-33,8.DOI:10.13842／j.cnki.issn1671‐8151 .201905034
腐植酸对干旱胁迫下谷子萌发的影响
Effects of humic acid on the seed germination of foxtail millet under drought stresses
摘要
Abstract
Present study was performed to determine the effects of humic acid (HA ) on the seed germination and seedling growth of millet under drought stresses .[Methods]In this study ,foxtail millet seeds of cultivar‘Jingu 21’ and‘Zhangza 10’ were selected and the effects of HA were determined by soaking the seeds into HA solutions at dif‐ferent concentrations of 50 ,100 ,200 ,300 ,and 400 mg·L －1 under simulated drought stress condition with 18% PEG‐6000 .[Results] T he results showed that seed germination and seedling grow th of foxtail millet were significantly in‐hibited by drought stress .However ,seed treatment with HA at 50～300 mg·L －1 significantly improved the germina‐tion potential ,activity index ,shoot length ,and root length of two varieties ,and the drought resistance indexes of‘Zhangza 10’ were significantly promoted.The comprehensive evaluation of multiple indexes by the membership func‐tion indicated that the optimal HA concentration to promote seed germination was 100 mg·L －1 .[Conclusion ] The suitable concentration of HA could significantly promote the seed germination rate and seedling grow th of millet under drought stress ,effectively alleviate the damage caused by drought stress and enhance the drought resistance of millet .关键词
谷子/腐植酸/萌发/抗旱指数Key words
Foxtail millet/Humic acid/Germination/Drought resistance index分类
农业科技引用本文复制引用
申洁,卫林颖,郭美俊,王玉国,原向阳,郭平毅..腐植酸对干旱胁迫下谷子萌发的影响[J].山西农业大学学报（自然科学版）,2019,39(6):26-33,8.基金项目
"十三五"国家谷子高粱产业技术体系项目(CARS‐06‐13. 5‐A28 ) （CARS‐06‐13. 5‐A28 ）
山西省高等学校科技创新项目(201802056 ) （201802056 ）
山西农业大学科技创新基金项目(2016006) （2016006）
