IMPROVING EFFECT OF EXOGENOUS NICKEL NITRATE APPLICATION ON PHYSIO-BIOCHEMICAL FEATURES, NITROGEN METABOLISM AND EARLY GROWTH OF RICE
文献类型： 外文期刊
第一作者： Zhang, T. T.
作者： Zhang, T. T.;He, L. X.;Ashraf, U.;Tong, T. Y.;Cheng, Y.;Zheng, A. X.;Lu, R. H.;Lai, R. F.;Feng, H. Y.;Tang, X. R.;Zhang, T. T.;He, L. X.;Ashraf, U.;Tong, T. Y.;Zheng, A. X.;Lai, R. F.;Tang, X. R.;Ashraf, U.;Sabir, S-U-R
作者机构：
关键词： chlorophyll; nickel nitrate; rice; seedling; enzymes in nitrogen metabolism; anti-oxidant enzyme
期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.711； 五年影响因子：0.796 ）
ISSN： 1589-1623
年卷期： 2019 年 17 卷 1 期
页码：
收录情况： SCI
摘要： High Ni2+ levels are toxic to plant growth; however, being a micro-nutrient, its application and/or presence in low concentration may improve plant growth. Present study investigated the effects of exogenous Ni application on morpho-physiological attributes of two rice cultivars in China i.e., Yuxiangyouzhan and Meixiangzhan 2. Nickel was applied exogenously to 11 days old seedlings as Ni(NO3)(2) in a solution form in the following concentrations: 0.1 mM (Ni1), 0.2 mM (Ni2) and 0.5 mM (Ni3). The seedlings without Ni2+ application were taken as control. Results showed that exogenous Ni 2+ application improved the early growth of seedlings in terms of seedling length, basal diameter, biomass accumulation and seedling index. Substantial improvements were also observed regarding chl a, chl b, total chl contents and carotenoids in plants under Ni2+ application compared to CK. Furthermore, all Ni2+ treatments decreased the content of Malondialdehyde (MDA). Among all applied concentrations, Ni2 proved better regarding its promotive effects, however further research is needed to explore the molecular basis of Ni-induced modulations in seedlings of both rice cultivars.
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