Paper Details

Allelopathic potential of petal, leaf and seed extracts of sunflower different ecotypes on Zea mays

Farnaz Dehghani, Sima Yahyaabadi, Monireh Ranjbar

DOI: https://dx.doi.org/10.12692/ijb/5.12.136-144

Int. J. Biosci. 5(12), 136-144. December, 2014. (PDF)

Abstract:

Allelochemicals have the potential to create friendly-eco products for weed management. The aim of the present investigation was to determine the allelopathic effect of aqueous extract from petal, leaf and seed on physiological parameters of  Zea mays. Factorial experiments were performed based on  a  completely randomized  block  design  with  three  replications. The first  factor  included  two  sunflower  ecotypes. The second factor was the concentration of the extracts (0, 0.5 g/l). The third factor was the different parts of sunflower (petal, leaf, seed). The results indicated that germination percentage, shoot and root length, peroxidase and catalase activity, chlorophyll a,b, total chlorophyll and carotenoid content of Zea mays was Significantly decreased by sunflower ecotypes. Aqueous extract of sunflower petals inhibited physiological paremeters more efficiently in comparison with leaves and seeds. Thus, petal and seed extract of Zardanjan sunflower inhibited physiological paremeters more efficiently in comparison with petal and seed extract of Shahreza sunflower. Therefore, allelopathic potential of these two ecotypes can be consider as a sustainable approach in integrated management systems.