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- Title
The impact of humic acid fractions on swelling and germination of 'Progres' and 'Nawiko' soybean seeds under salt and water deficit stresses.
- Authors
Gawlik, Andrzej; Gołębiowska, Dorota; Kulpa, Danuta; Bejger, Romualda; Matuszak-Slamani, Renata; Sienkiewicz, Mariola; Włodarczyk, Małgorzata
- Abstract
A laboratory research was carried out to examine the impact of humic acids (HA) on swelling and germination of 'Nawiko' and 'Progres' soybean seeds under salt stress (50 mM dm-3 NaCl) and water deficit stress (-0.5 MPa) induced by polyethylene glycol (PEG) 6000. HA in the form of a dry preparation was obtained from peat using the IHSS method. Tests on swelling and germination used non-fractionate preparation (NFHA) and two of its molecular fractions obtained using Millipore filters with a 30 kDa cut-off point. This enabled us to obtain two fractions: with a higher molecular weight, above 30 kDa (HMHA), and a lower molecular weight, below 30 kDa (LMHA). The carbon concentration in HA solutions, used in all tests, was 0.005 g CHA dm-3. The results showed that HA mitigate the negative impact of salinity and water deficit on swelling and germination of soybean seeds.
- Subjects
SEEDS; SOYBEAN; PLANT water requirements; EFFECT of stress on plants; HUMIC acid; EFFECT of salt on plants; MOLECULAR weights
- Publication
Acta Agrobotanica, 2016, Vol 69, Issue 3, p1
- ISSN
0065-0951
- Publication type
Article
- DOI
10.5586/aa.1672