Evaluation of safflower (Carthamus tinctorius cv. Koseh) extract on germination and induction of α-amylase activity of wild mustard (Sinapis arvensis) seeds

Author： Farhoudi R. Lee D.J.

Publisher： International Seed Testing Association

ISSN： 1819-5717

Source： Seed Science and Technology, Vol.40, Iss.1, 2012-04, pp. : 134-138

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Abstract

This research was carried out in order to evaluate possible allelopathic effects of safflower (Carthamus tinctorius L. cv. Koseh) on seed germination and induction of α-amylase of wild mustard (Sinapis arvensis L.). The experimental design was arranged in a completely randomized design with six replications. Treatments were different safflower extract concentration (0, 5, 10, 15 and 20%). Results showed seed germination, lipid peroxidation malondialdehyde (MDA) concentration, seedling fresh weight and seedling length of wild mustard decreased when safflower extract concentration increased but mean germination time decreased. Safflower extracts also inhibited the induction of α-amylase in target seeds and the inhibition increased with increasing extract concentration. The lowest induction of α-amylase was obtained with 15 and 20% safflower extract (5.1 and 4.7 nmol seed^-1 min^-1, respectively).