引用本文:[点击复制]
[点击复制]
【打印本页】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
3种外源植物生长调节剂对干旱胁迫下烟草生理的影响
仲晓君,李强,周喜新,刘俊龙,李明昌,程昌新
0
(湖南农业大学生物科技学院,长沙 410128; 湖南农业大学烟草研究院,长沙410128;湖南农业大学烟草研究院,长沙410128; 湖南农业大学食品科学技术学院,长沙410128;湖南农业大学农学院,长沙410128;云南省烟草公司曲靖市公司,曲靖655000;红云红河烟草(集团)有限责任公司,昆明 650231)
摘要:
以K326品种烤烟为试验材料,采用盆栽试验研究干旱胁迫下烤烟生长与生理状况,以及喷施水杨酸、甜菜碱和氯化胆碱对烤烟抗氧化代谢影响。结果表明,干旱胁迫抑制烤烟正常生长,烟株矮小,有效叶片数目少,茎干瘦弱,叶长变短及叶宽变窄。喷施植物生长调节剂可以缓解干旱胁迫症状,喷施氯化胆碱能有效增加株高、最大叶长、有效叶片数,提高烟株干重、丙二醛(MDA)含量、脯氨酸含量及超氧化物歧化酶酶(SOD)活性;喷施甜菜碱对过氧化氢酶(CAT)活性有较好调节效应;喷施水杨酸能显著提高过氧化物酶(POD)活性,提高烤烟茎围和最大叶宽。综上所述,植物生长调节剂能提高烟株耐旱性,增强烟株对干旱环境适应性,其中以喷施氯化胆碱效果最佳。
关键词:  烤烟  干旱胁迫  水杨酸  甜菜碱  氯化胆碱
DOI:10.13610/j.cnki.1672-352x.20171214.035
基金项目:云南省烟草公司项目“曲靖市精益烟叶生产研究与应用”(2014YN24)和红云红河烟草集团项目(HYHH2016YL03)
Effects of three exogenous plant growth regulators on tobacco physiology under drought stress
ZHONG Xiaojun,LI Qiang,ZHOU Xixin,LIU Junlong,LI Mingchang,CHENG Changxin
(College of Bioscience and Technology, Hunan Agricultural University, Changsha 410128; Institute of Tobacco,Hunan Agricultural University, Changsha 410128;Institute of Tobacco,Hunan Agricultural University, Changsha 410128; College of Food Science and Technology, Hunan Agricultural University, Changsha 410128;College of Agronomy, Hunan Agricultural University, Changsha 410128;Yunnan Province Tobacco Company Qujing branch, Qujing 655000;Hongyun Honghe Tobacco(Group)Co.,Ltd, Kunming 650231)
Abstract:
The effects of salicylic acid, glycine betaine and choline chloride on the antioxidant metabolism of flue-cured tobacco were studied using a pot experiment. The growth and physiological indexes of flue-cured tobacco cultivar K326 under drought stress were studied. The results showed that drought stress inhibited the normal growth as the tobacco plants were shorter, the number of effective leaves were lessen, the stem was thinner, and the leaf length became shorter and the leaf width became narrower compared with the control. Spraying plant growth regulators could relieve the drought stress symptoms. For example, spraying choline chloride effectively increased the dry weight, MDA content, free proline content, SOD activity and it also effectively increased the plant height, the maximum leaf length and effective leaf number. Glycine betaine had a good regulatory effect on CAT activity. Spraying salicylic acid significantly increased POD activity, raised stem thickness and maximum leaf width. In summary, plant growth regulators can improve the drought tolerance of tobacco plants, and enhance the adaptability of tobacco plants to drought environment and choline chloride showed the best effect.
Key words:  flue-cured  drought stress  salicylic acid  glycine betaine  choline chloride

用微信扫一扫

用微信扫一扫