文献类型： 外文期刊
作者： Gan, Liping 1 ; Wu, Xiaoli 2 ; Zhong, Yan 1 ;
作者机构： 1.Chongqing Three Gorges Univ, Sch Life Sci & Engn, Chongqing, Peoples R China
2.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Sichuan, Peoples R China
关键词： Drought stress;Hulless barley;Leaf growth;Nitric Oxide;Physiological
期刊名称：PLANT PRODUCTION SCIENCE （ 影响因子：2.222； 五年影响因子：2.175 ）
ISSN： 1343-943X
年卷期： 2015 年 18 卷 1 期
页码：
收录情况： SCI
摘要： Drought stress is a severe threat to high altitude hulless barley production, which causes oxidative damage, disturbs water relations and photosynthesis, while exogenously applied nitric oxide (NO) has the potential to alleviate these effects. In the present study, the role of NO in improving drought tolerance of hulless barley was evaluated. At the three leaf stage, sodium nitroprusside (SNP), a NO donor, was applied at 50, 100 and 150 mu mol l(-1) under drought stress, the controls, were kept at full field water capacity without NO treatment. The results showed that drought stress seriously reduced the hulless barley growth and physiological attributes, but NO application alleviated the stress effects. Drought tolerance in hulless barley was strongly related to the maintenance of water content and enhanced capacity of antioxidants, improved stability of cellular membranes and enhanced photosynthetic capacity, plausibly by signaling action of NO. Among the NO treatments, 100 mu mol l(-1) SNP was the most effective.
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