Abstract:
According to WHO estimations, 89% of the world population rely on natural products and medicinal herbs for primary healthcare, and the growing tendency towards the use of pharmaceutical plants at a global scale has highlighted the importance of cultivating and producing these plants. On the other hand, drought is the most significant factor limiting agricultural products. In this regard, the present study was conducted in Mianeh in the crop year 2019 in the form of split plots with a random block design with three iterations to investigate the impacts of spraying Pars Humic solution to increase plant yield and reduce the effects of drought stress. Drought stress (the main factor) was examined at four levels including a1: 80% FC, a2: 60%FC, a3: 40% FC, and a4: control (normal) and spraying Pars Humic solution (the secondary factor) at the two levels of b1: no spraying and b2: spraying a Pars Humic solution at the concentration of 2 liters per 1000liters of water. Results indicated significant differences between the levels of the main factor (drought stress) and secondary factor (Pars Humic spraying) in terms of all the studied traits at 1%and 5% significance levels. Moreover, only the variables of plant height and stem diameter varied significantly due to the mutual effect of drought in spraying, and the other traits did not vary significantly in this regard although their values differed from one another. Spraying a 0.002 Pars Humic solution resulted in a 3.75, 4.38, 2.91, and 4.68% increase in peduncle length, number of branches, number of capsules, and seed oil percentage, respectively. Drought stress -particularly severe drought stress at 40% FC- resulted in a significant decline in stem diameter, plant height, number of branches, seed weights, and seed oil content. Spraying 0.002 Pars Humic solution resulted in extremely significant changes in the qualitative and quantitative of the variables examined in the present study.
Page(s):
602-609
DOI:
DOI not available
Published:
Journal: Bioscience Research, Volume: 19, Issue: 1, Year: 2022
Keywords:
drought stress
,
Purslane
,
qualitative and quantitative traits
,
Pars Humic