文献类型：期刊文献

英文题名：Optimal Concentration of Zinc Sulfate in Foliar Spray to Alleviate Salinity Stress in Glycine soja

作者：Jiang, W.[1,2];Sun, X. H.[3];Xu, H. L.[1];Mantri, N.[4];Lu, H. F.[1]

机构：[1]Zhejiang Sci Tech Univ, Coll Life Sci, Hangzhou 310018, Peoples R China;[2]Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou 325005, Peoples R China;[3]Shaoxing Univ, Yuanpei Coll, Shaoxing 312000, Peoples R China;[4]RMIT Univ, Hlth Innovat Res Inst, Sch Appl Sci, Melbourne, Vic 3000, Australia

年份：2014

卷号：16

期号：2

起止页码：445

外文期刊名：JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000332303100017)、、WOS

基金：The authors thank Ms. Na Li for help with pilot experiments. This study was supported by grants from the Science and Technology Research Plan of Jinhua city, China (No. 2009-2-020) and the Science and Technology planning project program of Shaoxing, Zhejiang, China (No. 2011A22009).

语种：英文

外文关键词：Biomass; Chlorophyll fluorescence parameters; Nutrients; Photosynthetic activity; Salt tolerance; Soybean

外文摘要：Zinc has previously been reported to alleviate salinity stress in plants. In this study, we monitored various biomass and chlorophyll fluorescence parameters to determine the optimum zinc sulfate concentration that can be used as foliar spray to alleviate salinity stress in Glycine soja. The plants subjected to a series of salinity levels (NaCl concentration of 0, 100, 200, and 300 mmol L-1), applied via the nutrient solution, were sprayed with different concentrations of zinc sulfate (0, 5, 10, 15, 20, 25 mu mol L-1). The results showed that the biomass and chlorophyll fluorescence parameters of seedlings were significantly affected by salt stress (P < 0.05). However, zinc sulfate sprays helped the plants to cope with the stress condition. The zinc sulfate concentrations that helped G. soja to cope with the salinity stress of 100, 200, and 300 mmol L-1 were 15 to 20, 15 to 20, and 10 to 20 mu mol L-1, respectively. Lower zinc concentration was ineffective in alleviating stress and higher zinc concentration inhibited plant growth because of toxicological damage to plants. The zinc sulfate spray of 15 mu mol L-1 was found to be the most appropriate at all salinity stress levels. The growth measurements such as true leaves part and dry weight of total seedlings were in agreement with the chlorophyll fluorescence parameters, indicating a visible enhancement of leaf photosynthetic activity at 10-20 mu mol L-1 zinc concentrations.