An enhanced drought-tolerant method using SA-loaded PAMPS polymer materials applied on tobacco pelleted seeds

ScientificWorldJournal. 2014:2014:752658. doi: 10.1155/2014/752658. Epub 2014 Aug 27.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Droughts*
  • Nicotiana / chemistry*
  • Polymers / administration & dosage
  • Polymers / chemistry*
  • Salicylic Acid / administration & dosage
  • Salicylic Acid / chemistry*
  • Seeds / chemistry*
  • Spectroscopy, Fourier Transform Infrared / methods
  • Sulfonic Acids / administration & dosage
  • Sulfonic Acids / chemistry*

Substances

  • Polymers
  • Sulfonic Acids
  • poly(2-acrylamido-2-methyl-1-propanesulfonic acid)
  • Salicylic Acid