biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 50:156-158, 2006 | DOI: 10.1007/s10535-005-0094-6

Allelopathic effects of sunflower extracts on mustard seed germination and seedling growth

R. Bogatek1,*, A. Gniazdowska1, W. Zakrzewska1, K. Oracz1, S. W. Gawronski2
1 Department of Plant Physiology, Warsaw Agricultural University, Warsaw, Poland
2 Department of Pomology and Basic Sciences in Horticulture, Warsaw Agricultural University, Warsaw, Poland

The allelopathic potential of two cultivars of sunflower (Helianthus annuus L.) Lech and Ogrodowy was studied. Leaf aqueous extracts of sunflower at 2.5, 5, and 10 % (m/v) concentrations were applied to determine their effect on mustard (Sinapis alba) seed germination and seedlings growth under laboratory conditions. Increasing concentration of aqueous extracts of sunflower inhibited seed germination, up to almost complete failure of germination, observed in the presence of 10 % extract from sunflower cv. Ogrodowy. The decrease in germinability was well correlated with increased membrane deterioration, assayed as electrical conductivity and enhanced lipid peroxidation, detected as increased malondialdehyde content.

Keywords: electrolyte leakage; Helianthus annuus; MDA content; Sinapis alba
Subjects: allelopathy; cultivar and genotype differences; germination; Helianthus annuus; malonyldialdehyde; mustard; seed; seedling growth; Sinapis alba; sunflower

Received: July 23, 2004; Accepted: January 12, 2005; Published: March 1, 2006  Show citation

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Bogatek, R., Gniazdowska, A., Zakrzewska, W., Oracz, K., & Gawronski, S.W. (2006). Allelopathic effects of sunflower extracts on mustard seed germination and seedling growth. Biologia plantarum, 50(1), 156-158. doi: 10.1007/s10535-005-0094-6
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