ALLELOPATHIC POTENTIAL OF JATROPHA CURCAS L. LEAF AQUEOUS EXTRACTS ON SEEDLING GROWTH OF WHEAT

作者：Khattak Adnan; Ullah Faizan^*; Wazir Sultan Mehmood; Shinwari Zabta Khan

来源：Pakistan Journal of Botany, 2015, 47(6): 2449-2454.

• Allelopathy
• Phenolics
• Jatropha curcas
• Nutrients
• Germination

Allelopathic effects of aqueous leaf extracts of Jatropha curcas on seed germination and early seedling growth of wheat cv. Incilab-91 were investigated. The extracts were applied at 50%, 25%, 12.5%, 6.25% and 3.12% as seed soaking for 5h prior to sowing of seeds in the pots. The J. curcas leaf characterized for composition of macronutrients showed Na (304 mu g/g), K (267 mu g/g), Mg (92 g/g) and Ca (12 mu g/g). Among micronutrients Fe (92 ttg/g), Cr (92 mu g/g), Ni (48 mu g/g), Co (38 mu g/g), Cu (23 mu g/g, Mn (12 mu g/g) and Zn (15.22 mu g/g) were found. Phenolic compounds were detected in the extracts and were found maximum (8.12 mg gallic acid/g extract) in 50% extract. Lower concentrations (6.25%, 3.25%) of the extracts significantly improved seed germination (%), germination index, shoot length, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight and root area of wheat plants (p<0.05). At higher concentration of the extract, root length was significantly reduced. It is inferred that lower concentrations (6.25% and 3.12%) of the extracts exhibited beneficial effects on growth of wheat plants.

• 出版日期2015-12