Temperature and water solution pH effects on crimson clover (Trifolium incarnatum L.) imbibition and seedling traits/Utjecaj temperature i pH otopine na upijanje sjemena i svojstva klijanaca inkarnatke (Trifolium incarnatum L.)

Crimson clover (Trifolium incarnatum L. convar. Inkara) seeds were imbibed with water solution of various pH values (4, 5, 6 and 7) at various ambiental temperatures (10, 15 and 22 [degrees]C) with the aim to reveal treatments effects on seed (imbibition, germination energy, germination and electric conductivity) and seedling traits (stem, root and total length). Seeds were imbibed in a laboratory by the standard method for seed germination. When averaged over the inquired pH values, ambient temperature affected all the investigated traits except stem length. The highest seed imbibition (58.8%) and electric conductivity (82 u.S/cm per gram) were achieved at 22 [degrees]C. The highest values for germination energy (70%), germination (68%), root length (31 mm) and total seedling length (77 mm) were achieved at 10 [degrees]C. When averaged over the inquired ambiental temperatures, the highest germination energy (71%), germination (73%), root length (34 mm) and total seedling length (78 mm) were achieved at pH 4.