热带作物学报2017，Vol.38Issue(9)：1620-1627,8.DOI:10.3969/j.issn.1000-2561.2017.09.007
陇南油橄榄主栽品种对干旱胁迫的生理响应及抗性综合评价
The Physiological Response and Comprehensive Evaluation of Drought Hardiness Under Drought Stress of Longnan Olive Main Varieties
摘要
Abstract
Wudu district of Longnan city,Gansu province is one of the best adaptive areas in China.Different levels of drought stress were imposed on 6 olive varieties seedlings which planted at Longnan,the osmotic adjustment and antioxidant ability were measured.The results indicated that,with the drought worsening,the leaf relative conductivity increased gradually,chlorophyll contents decreased with different degrees,while malondialdehyde (MDA) content increased first and then decreased.Picholine and Frantoio suffered more seriously,while Leccino and Ezhi8 suffered more lightly.The osmotic adjustment substances contents increased basically as drought worsened.The soluble sugar contents generally increased with different degrees,the proline contents increased first and then decreased,the soluble protein contents increased with different degrees except Picholine and Frantoio decreased.Leccino and Ezhi 8 relative increased more in osmotic adjustment substances,while Picholine and Frantoio increased less.The activities of antioxidant enzyme of the 6 olive varieties generally increased first and then decreased with the drought worsening.The antioxidant ability of Leccino and Ezhi 8 were stronger,while that of Picholine and Frantoio were lower.Through subordinate function analysis,the average degree of membership,as the comprehensive evaluation value of drought hardiness were obtained,which showed the sequence of drought resistance of the 6 varieties was:Leccino ＞ Ezhi 8 ＞ Pendolino ＞ Ascolano Tenera ＞ Frantoio ＞ Picholine.Leccino and Ezhi 8 showed the highest drought resistance,Pendolino in the middle,Frantoio and Picholine showed the lowest.关键词
油橄榄/干旱胁迫/渗透调节/抗氧化酶活性/隶属函数分析/抗旱性综合评价Key words
Olea europaea/drought stress/osmotic adjustment/activity of antioxidant enzyme/subordinate function analysis/drought hardiness comprehensive evaluation分类
农业科技引用本文复制引用
赵阳,赵曼利,焦润安,焦健,刘文兰,李朝周..陇南油橄榄主栽品种对干旱胁迫的生理响应及抗性综合评价[J].热带作物学报,2017,38(9):1620-1627,8.基金项目
国家自然科学基金(No.31660223) （No.31660223）
甘肃省农牧厅项目(No.GNSW-2016-28) （No.GNSW-2016-28）
秦巴山片区(甘肃)精准扶贫富民产业培育及示范项目. （甘肃）
