مقارنة التأثير التضاد الكيميائي (Allelopathy)‎ للمستخلصات المائية لبعض أجزاء نبات الداتورة Datura stramonium على إنبات بذور بعض النباتات

Abstract EN

Weeds are one of the most important pests that hinder human efforts to obtain sufficient agricultural production of good specifications.

Allelopathy is the secretion by some plants of chemical compounds as a competitive way to weaken or prevent the growth of neighboring plantsو Datura is one of herbs that grow near agricultural crops in al-Hennieh /al-Jabal al-Akhdar region.

Therefore, this study came to compare the allelopathic effect of aqueous extracts of Datura stramonium (leaves, seeds, and roots) at a concentration (20, 40, 80%) on germination of seeds of some leguminous plants (Vicia faba, Pisum sativum, Lens culinaris, Cicer arietinum, Lupinus albus, Ceratonia siliqua).

The results showed that there were highly significant differences in germination percentage reduction between aqueous extracts and concentrations compared with control.

Where extracts of leaves and roots superior in recording the largest inhibition ratios compared to seed extract, The results also indicated that all tested concentrations significantly decreased germination percentage except for a concentration 20% of seed extract for Vicia faba and Pisum sativum plants with germination percentage (100, 96.6%), respectively, although it caused a delay in average time of germination, and was a concentration of 80% is the most toxic in inhibiting growth of all seeds of leguminous types, It was also noted that the Vicia faba plant is the most leguminous types resistant of aqueous extracts, while Lens culinaris and Ceratonia siliqua were the most sensitive types.