期刊
PLANT GROWTH REGULATION
卷 69, 期 3, 页码 225-233出版社
SPRINGER
DOI: 10.1007/s10725-012-9764-5
关键词
Moringa oleifera; Antioxidants; Growth stimulants; Salinity
资金
- Higher Education Commission, Pakistan
Amongst naturally occurring plant growth stimulants, moringa (Moringa oleifera Lam.) has attained enormous attention being rich in cytokinin, antioxidants and macro-micro nutrients in its leaves. In this study, potential of foliar applied moringa leaf extract (MLE; 30 times diluted), benzyl amino purine (BAP; 50 mg L-1) and hydrogen peroxide (H2O2; 120 mu M) at tillering, jointing, booting and heading growth stages was evaluated to induce salt resistance in wheat. Water spray treatment was taken as control. Wheat cv. Sehar-2006 was grown under normal (4 dS m(-1)), medium (8 dS m(-1)) and high (12 dS m(-1)) soil saline conditions. Application of these stimulants decreased the shoot Na+ and Cl- contents, with simultaneous increase in shoot K+ contents. Maximum shoot K+ (48.62 %) contents were recorded with MLE application under high salinity. Activities of leaf antioxidants viz. superoxide dismutase, peroxidase and contents of total soluble phenolics were increased at medium salinity level; whereas ascorbate contents were also improved by MLE application at high salinity level. However, maximum increase in leaf total soluble protein (35.9 %) was observed with BAP application at medium salinity. The shoot length, shoot and root dry weights were decreased with increase in level of salt stress. Grain weight (18.5 %) and kernel yield (18.5 %) were also improved by MLE application under saline and normal conditions than other stimulators used. In conclusion, foliar applied moringa leaf extract could ameliorate salinity-induced adverse effects by activation of antioxidant defense system and decrease in accumulation of Na+ and Cl- into shoots under moderate saline conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据