Volume 14, Issue 69 (vol. 14, no. 69 2025)
2025, 14(69): 309-322 |
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Almasian N, Diyanat M, Ebrahimi A, Azizinejad R, Khosroshahli M. Application of biologic nanoemulsions on the control of Johnson grass
(Sorghum halepense L.). Plant Process and Function 2025; 14 (69) : 18
URL: http://jispp.iut.ac.ir/article-1-2226-en.html
URL: http://jispp.iut.ac.ir/article-1-2226-en.html
1- Department of Biotechnology and Plant Breeding, SR.C., Islamic Azad University, Tehran, Iran
2- Department of Agriculture and Horticultural Sciences, SR.C., Islamic Azad University, Tehran, Iran ,ma_dyanat@yahoo.com
2- Department of Agriculture and Horticultural Sciences, SR.C., Islamic Azad University, Tehran, Iran ,
Abstract: (37 Views)
Various studies have shown that plant extracts can greatly control weeds and minimize the damage caused by chemical herbicides. This study aimed to investigate the allelopathic effect of harmel (Peganum harmala) and ailanthus tree (Ailanthus altissima) extract and nanoemulsion on physiological and biochemical traits of Johnson grass in a greenhouse (in vivo) in a randomized complete block design with four replications was conducted. The experimental treatments included hydroalcoholic extract of harmel and ailanthus tree at five levels (2, 5, 10, 20, and 30%) and nanoemulsions of harmel and ailanthus tree at two levels (5 and 20%), distilled water (negative control), and paraquat (positive control). GC-MS analysis was used to identify the biochemical components of the plant extracts. The high-energy method was used to prepare a nanoemulsion. Zeta/DLS, TEM, and FTIR imaging were used to characterize the nanoparticles. Harmine and quercetin were the most abundant compounds in the studied extracts. TEM imaging showed that the nanoemulsions of the extract were spherical and well dispersed. DLS analysis showed 229.6 and 146.3 nm for the nanoemulsion. Both types of extract and nanoemulsion reduced the chlorophyll and carotenoid of the weed, so that the most significant decrease in the content of chlorophyll and carotenoid was in the 20% juniper nanoemulsion factors 12.16 and 6.48 mg/g fresh weight, respectively; juniper extract with 30% concentration was 13.43 and 15.71 mg/g fresh weight, respectively; the nanoemulsion treatment P. harmala was observed as 17.52 and 10.40 mg per gram of fresh weight, respectively; and with increasing concentration, membrane electrolyte leakage increased. Nanoencapsulation increased the anti-injury effect of A. altissima extract in such a way that 20% A. altissima nanoemulsion decreased the activity of the peroxidase enzyme and increased visible injury. The lowest peroxidase activity was in the treatment of A.altissima nanoemulsion 20% with (ΔOD/min/mg protein) 6.66 and A. altissima extract 30% with (ΔOD/Min/mg protein) 7.85.
Article number: 18
Type of Study: Research |
Subject:
others
Received: 2025/06/8 | Accepted: 2025/09/2 | Published: 2025/12/16
Received: 2025/06/8 | Accepted: 2025/09/2 | Published: 2025/12/16
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