Ali Esmaeilzadeh, Ahmad Koochekzadeh, Seyed Ataollah Siadat, Amin Lotfi Jalal-Abadi, Abdolreza Siyahpoosh,
Volume 9, Issue 40 (vol. 9, no. 40 2021)
Abstract
Common purslane is a warm season plant which had a lot of medicinal properties. An experiment was conducted as a split plot design arranged in completely randomized block design with three replications in the research field of Agricultural Sciences and Natural Resources University of Khuzestan during 2015-2016. In this experiment, the main plots consisted of four levels of irrigation intervals (5, 10, 15 and 20 days), and the sub-plots included four different types of fertilizers (no fertilizer, chemical fertilizer, chicken manure, and cow manure). The results indicated that five-day irrigation interval exhibited the best results for the most of the traits. Among different types of fertilizers, chemical fertilizer and chicken manure had relatively the highest dry weight of plant, stem, leaf, stem length, number of sub-stems and leaf protein content. The results of this study revealed that in semi arid region such as Khuzestan with low rainfall, the 10-day irrigation interval could be an appropriate alternative for 5-day irrigation interval. Chicken manure not only provide the highest yield, but also it can reduce the amount of chemical fertilizer inputs to the purslane farms. In addition to an acceptable yield, it can be a great step towards environmental health and, finally sustainable agriculture through reducing application of chemical fertilizers.
Farzaneh Ghalavand, Amin Lotfi Jalal-Abadi, Alireza Abdali Mashhadi, Seyed Ataollah Siadat, Ahmad Koochekzadeh,
Volume 10, Issue 46 (vol. 10, No. 46 2022)
Abstract
In order to investigate the effects of priming methods on the improvement of seed germination indices and seedling growth of Lallemantia (Lallemantia iberica) under different salinity levels, two factorial experiments in a randomized complete block design were carried out in the seed technology laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in 2018-2019. In the first experiment, five levels of seed priming including: Control, hydropriming (for 24 hours), gibberellic acid (100 mg.l-1 for eight hours), and solutes of potassium nitrate and sodium chloride (NaCl) (50 mg.l-1 for 6 hours) as the first factor and four levels of salinity stress, including 0 (control), 100, 200, and 300 mM of NaCl, as the second factor in four replications were examined. Also, a pot experiment was conducted to determine the effects of the studied treatments on some seedling growth indices in three replications. In general, indices of germination percentage, germination rate, radicle length, plumule length, emergence percentage, emergence rate, contents of chlorophyll a, b, carotenoids, and enzymatic activities of catalase and peroxidase were evaluated in this study. Results revealed that salinity stress, priming, and their interaction had significant effects on most of the studied traits. Also, increasing salinity concentrations led to decreases in all traits (except the activity of antioxidant enzymes). Generally, our findings showed that all seed priming treatments moderated the negative impacts of salinity stress and the application of NaCl could be a suitable treatment to increase the tolerance of Lallemantia seeds against high levels of salinity stress.
