PJB-2022-98
MORPHO-PHYSIOLOGICAL RESPONSES OF CHENOPODIUM ALBUM L. AGAINST ALLELOPATHIC WATER EXTRACT OF TRIANTHEMA PORTULACASTRUM L.
Muhammad Shahid Hassan
Abstract
Weeds causing severe crop losses can be controlled by various methods of weeds control. Among these, allelopathy is an eco-friendly bio-control method as compared to synthetic weedicides. The purpose of the present research work was to evaluate the allelopathic potential of Trianthema portulacastrum aqueous extract on some attributes like seed germination and growth of Chenopodium album. In petri-plate experiment, various levels of root and shoot water extracts (30%, 60% and 100%) and herbicide (Metafin super) were applied to assess their effects on seed germination and seedling growth of C. album. During pot experiment, the already mentioned plant extracts and herbicide were applied in pots to calculate their allelopathic potential on parameters of growth, yield, and their efficacy on physiological and anatomical characteristics of stem, root and leaf. Results indicated that aqueous plant extracts significantly (p≤ 0.05) decreased all the morphological, physiological and anatomical measured traits except total free amino acids, total soluble proteins, proline, CAT, total soluble sugars, calcium and potassium ions and effect of extracts was concentration specific. However, allelopathic effect of shoot extract was more pronounced than the root extract. It can be concluded that the shoot extract of T. portulacastrum can serve as a good post-emergence bio-herbicide for controlling C. album in cultivated crops.
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