干旱胁迫下5个烤烟品种的生理指标变化及抗旱性比较

摘要

[Objective] To study the drought resistance of 5 flue-cured tobacco cultivars.[Method] Five flue-cured tobacco cultivars were selected and cultured by using floating seedling-raising technology.And they were treated with drought stress at 5-leaf period of seedling.And some physiological indices related with drought resistance were determined.[Result] Under the same conditions of drought stress,the sensitivity and tolerance of some flue-cured tobacco cultivars to drought had significant difference.The drought resistance of Anyan 2 and Zhongyan 14 was similar,belonging to flue-cured tobacco cultivars with stronger drought resistance.The drought resistance of Yunyan 97 and Zhongyan 100 followed by,and the drought resistance of K326 was the most worst.[Conclusion] The results can provide reference for selecting main varieties of flue-cured tobacco in arid areas.%[目的]比较5个烤烟品种的抗旱性.[方法]选用5个烤烟品种(安烟2号、K326、云烟97、中烟100、中烟14),采用漂浮育苗技术育苗,在苗期5叶期进行干旱胁迫处理,并对与抗旱性相关的部分生理指标进行了测定.[结果]相同的干旱胁迫条件下,某些烤烟品种对干旱的敏感程度和忍耐力存在显著差异,安烟2号和中烟14的抗旱性相近,属抗旱性较强的品种,云烟97和中烟100次之,K326的抗旱性最弱.[结论]该研究结果可为干旱地区烤烟主栽品种的选择提供参考.