title: Phytochemical relationship of Euphorbia helioscopia and Euphorbia pulcherrima with Lactuca sativa.
abstract: Allelopathy is an important phenomenon that modifies the ecosystem. A plant can enhance or reduce the growth of other plant due to the presence of a number of allelochemicals in its different parts. Euphorbia helioscopia and Euphorbia pulcherrima are medicinal plant species. Both these species are collected from wild resources for various purposes. To reduce the pressure on wild population, it is important to bring them into cultivation. Therefore, the allelopathic effects of E. helioscopia and E. pulcherrima on the growth of lettuce seeds were studied. Three different concentrations (2%, 4% and 6%) of five different solvents (methanol, acetone, ethyl acetate, n-hexane and distilled water) were used to estimate the allelopathic potential of the above-mentioned Euphorbia species. Results indicated a non-significant growth inhibitory effect of both plants on lettuce seeds. Different extracts reduced the growth of test plant to some extent but this inhibition was not significant. From the observed results, it was concluded that the studied Euphorbia species, being medicinally important crops, can be introduced as intercrop with other cash crops.
authors: a Department of Botany , Lahore College for Women University , Lahore , Pakistan.
authors: Hafiza Ayesha
authors: HA
authors: Rehman
authors: Zubaida
authors: Z
authors: Yousaf
authors: Madiha
authors: M
authors: Rashid
authors: Afifa
authors: A
authors: Younas
authors: Ayesha
authors: A
authors: Arif
authors: Ismah
authors: I
authors: Afzal
authors: Waheed
authors: W
authors: Akram
mesh_terms: D064089:Allelopathy; D028481:Euphorbia / Q000737:chemistry* / Q000145:classification; D018545:Lactuca / Q000187:drug effects* / Q000254:growth & development; D010936:Plant Extracts / Q000494:pharmacology*; D012639:Seeds / Q000187:drug effects / Q000254:growth & development; D012997:Solvents / Q000737:chemistry
chemical_list: D010936:Plant Extracts; D012997:Solvents
keywords: Euphorbiahelioscopia; Euphorbiapulcherrima; allelopathy; ethyl acetate; lettuce; methanol