TY - JOUR ID - 86966 TI - Effect of Foliar Application of Plant Extracts on the Growth Behavior and Quality of Evening Primrose (Oenothera biennis L.) JO - International Journal of Horticultural Science and Technology JA - IJHST LA - en SN - 2322-1461 AU - Ghezel, Mohammad Amin AU - Ghasemnezhad, Azim AU - Hemmati, Khodayar AU - Sohrabi, Omid AD - Department of Horticultural Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran AD - Department of Horticultural Sciences, Guilan University, Rasht, Iran Y1 - 2022 PY - 2022 VL - 9 IS - 4 SP - 393 EP - 404 KW - Free fatty acids KW - medicinal plants KW - oil percentage KW - plant for plant KW - Plant extract DO - 10.22059/ijhst.2021.321436.456 N2 - The indeterminate behavior of evening primrose is a frequent limitation in its cultivation. Controlling the final growth of plants at a certain stage is important. In the present ‎experiment, different plant extracts were compared functionally with ‎cycocel at different times of application. The experiment was performed as a factorial experiment based on a ‎randomized complete block design with three replications. Treatments included normal water ‎‎(control), cycocel (zero and 100 ppm), walnut (Juglans regia L.) leaf extract (zero and 25%), oak ‎fruit extract (Quercus castaneifolia L.) (zero and 25%), and cotton ‎capsule extract (Gossypium hirsutum L.) (zero and 25%). Evaluations were made on the seeds, oil yield and yield-components. The foliar application significantly reduced stem length (43-80%) and plant height (13-‎‎33%), but increased the percentage of oils (18.75%) and free fatty acids (67.5%). The highest ‎oil content (35%) occurred in response to a combination of walnut, oak, cotton extracts, and cycocel.‎‏ ‏The highest amount of free fatty acids (23%) indicated more immature‏ ‏seeds and ‎was obtained under the treatment of cotton extract. Natural extracts increased the oil percentage, but reduced ‎the free fatty acid percentage and the stem length. It seems that further studies in this ‎regard can help control non-terminal growth of evening primrose without having a need for breeding ‎programs. UR - https://ijhst.ut.ac.ir/article_86966.html L1 - https://ijhst.ut.ac.ir/article_86966_6d0c1e774be747985650de8fe132ede8.pdf ER -