Effect of green synthesised iron nanoparticles on seedling traits in Stylosanthes hamata

VINOD  KUMAR; JAYASHREE  M; SEEMA S  DODDAMANI

doi:10.56093/ijas.v95i11.149059

Authors

VINOD KUMAR ICAR-Indian Grassland and Fodder Research Institute, Southern Regional Research Station, Dharwad, Karnataka 580 005, India
JAYASHREE M ICAR-Indian Grassland and Fodder Research Institute, Southern Regional Research Station, Dharwad, Karnataka 580 005, India
SEEMA S DODDAMANI ICAR-Indian Grassland and Fodder Research Institute, Southern Regional Research Station, Dharwad, Karnataka 580 005, India

https://doi.org/10.56093/ijas.v95i11.149059

Keywords:

Characterization, Priming, Papaya leaf, Iron nanoparticles, Stylosanthes hamata

Abstract

The experiment was conducted to evaluate the effect of green-synthesised iron nanoparticles (FeNPs) using papaya (Carica papaya) leaf extract on seed dormancy and seedling traits of Stylosanthes hamata, an important forage legume. The FeNPs exhibited an absorption peak at 328.2 nm in the UV-Vis spectrum and an average particle size of 67.8 nm as determined by PSA. Seed priming with green-synthesised FeNPs significantly influenced the seed quality parameters of S. hamata. Among the treatments, FeNPs at 80 ppm (T₆) recorded the highest seed germination (59.67%), root length (4.13 cm), shoot length (4.32 cm), seedling vigour index-I (504), speed of germination (15.59), and seedling dry weight (34.23 mg), along with a lower proportion of hard seeds (29.33%) and abnormal seedlings (4%), compared to the control. However, higher concentrations of FeNPs (100 ppm and 120 ppm) adversely affected germination and seedling growth. Therefore, green-synthesised iron nanoparticles can be effectively used as an alternative, eco-friendly seed treatment method to overcome hard seed coat dormancy in Stylosanthes hamata.

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