title: An enhanced drought-tolerant method using SA-loaded PAMPS polymer materials applied on tobacco pelleted seeds.
abstract: Drought is one of the most important stress factors limiting the seed industry and crop production. Present study was undertaken to create novel drought-resistant pelleted seeds using the combined materials with superabsorbent polymer, poly(2-acrylamide-2-methyl propane sulfonic acid) (PAMPS) hydrogel, and drought resistance agent, salicylic acid (SA). The optimized PAMPS hydrogel was obtained as the molar ratio of 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) to potassium peroxydisulfate (KPS) and N, N'-methylene-bis-acrylamide (MBA) was 1 : 0.00046 : 0.00134. The hydrogel weight after swelling in deionized water for 24 h reached 4306 times its own dry weight. The water retention ratio (RR) of PAMPS was significantly higher as compared with the control. It could keep as high as 85.3% of original weight after 30 min at 110 °C; even at 25 °C for 40 d, the PAMPS still kept RR at 33.67%. PAMPS disintegration ratio increased gradually and reached around 30% after embedding in soil or activated sludge for 60 d. In addition, there were better seed germination performance and seedling growth in the pelleted treatments with SA-loaded PAMPS hydrogel under drought stress than control. It suggested that SA-loaded PAMPS hydrogel, a nontoxic superabsorbent polymer, could be used as an effective drought resistance material applied to tobacco pelleted seeds.
authors.affiliation: Seed Science Center, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
authors.forename: Yajing
authors.initials: Y
authors.lastname: Guan
authors.affiliation: Yuxi Zhongyan Tobacco Seed Co., Ltd., Yuxi 653100, China.
authors.forename: Huawei
authors.initials: H
authors.lastname: Cui
authors.affiliation: Yuxi Zhongyan Tobacco Seed Co., Ltd., Yuxi 653100, China.
authors.forename: Wenguang
authors.initials: W
authors.lastname: Ma
authors.affiliation: Yuxi Zhongyan Tobacco Seed Co., Ltd., Yuxi 653100, China.
authors.forename: Yunye
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: Yuxi Zhongyan Tobacco Seed Co., Ltd., Yuxi 653100, China.
authors.forename: Yixin
authors.initials: Y
authors.lastname: Tian
authors.affiliation: Seed Science Center, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Hu
mesh_terms: D055864:Droughts; D011108:Polymers / Q000008:administration & dosage / Q000737:chemistry*; D020156:Salicylic Acid / Q000008:administration & dosage / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D013451:Sulfonic Acids / Q000008:administration & dosage / Q000737:chemistry*; D014026:Nicotiana / Q000737:chemistry*
chemical_list: D011108:Polymers; D013451:Sulfonic Acids; C077118:poly(2-acrylamido-2-methyl-1-propanesulfonic acid); D020156:Salicylic Acid