Optimization of pre-sowing magnetic field doses through RSM in pea

Abstract

A b s t r a c t. Seed pre-sowing magnetic field treatment was reported to induce biochemical and physiological changes. In the present study, response surface methodology was used for deduction of optimal magnetic field doses. Improved growth and yield responses in the pea cultivar were achieved using a rotatable central composite design and multivariate data analysis. The growth parameters such as root and shoot fresh masses and lengths as well as yield were enhanced at a certain magnetic field level. The chlorophyll contents were also enhanced significantly vs. the control. The low magnetic field strength for longer duration of exposure/high strength for shorter exposure were found to be optimal points for maximum responses in root fresh mass, chlorophyll 'a' contents, and green pod yield/plant, respectively and a similar trend was observed for other measured parameters. The results indicate that the magnetic field pre-sowing seed treatment can be used practically to enhance the growth and yield in pea cultivar and response surface methodology was found an efficient experimental tool for optimization of the treatment level to obtain maximum response of interest.K e y w o r d s: pea, magnetic field, multivariable analysis, photosynthesis, response surface methodology

Green ultrasound-assisted extraction of anthocyanin and phenolic compounds from purple sweet potato using response surface methodology

“…Response surface methodology (RSM) is widely used in food industry and other related fields (Iqbal et al, 2013), especially for extraction of valuable compounds, where interactions exist between processing factors (Cai et al, 2012;Fang et al, 2014;Lai et al, 2014;Tabaraki et al, 2012). For example, in the case of PSP valorization, Ahmed et al (2011) optimized extraction conditions (drying temperature, citric acid concentration, and soaking time) for isolation of anthocyanins and phenolics from PSP using RSM with a face-centred cube design.…”

Effect of Extremely Low Power Time‐Varying Electromagnetic Field on Germination and Other Characteristics in Foxtail Millet (Setaria italica) Seeds

“…Seed germination stimulation might be attributed to a combined effect of biochemical, physiological, metabolic, and enhanced enzymatic action [Iqbal et al, 2016]. It is considered that MF alters cell membrane permeability and transfers water and energy signals into the cell and hence, metabolic pathways may be influenced [Iqbal et al, 2013]. Another theory states that MF affects biological objects by nonconventional spins, free radicals, liquids crystals, or mobile electron charges.…”

Campo electromagnético en plántulas, rendimiento y calidad de maíz en condiciones de campo

“…El efecto positivo de campo magnético sobre el rendimiento de trigo reportado por Pietruszewski y Kania (2010) y chícharo por Iqbal et al (2013). En maíz, Zepeda-Bautista et al (2014) reportaron que con 12 min de exposición de la semilla a CE (480 mT) en pre-siembra se aumentó 6% el rendimiento de grano.…”

“…En otros cultivos como trigo, se observó 12 y 14% más rendimiento con la exposición a campo magnético a una dosis de 12.9 y 17.9 kJ m -3 s -1 en comparación con el control (Pietruszewski y Kania, 2010) y en chícharo, se observó la mayor producción de vaina verde por planta y por hectárea con la exposición de 5 min a una intensidad de 180 mT (Iqbal et al, 2013).…”

“…En trigo, se encontró 12 y 14% más rendimiento con la exposición a campo magnético a una dosis de 12.9 y 17.9 kJ m -3 s -1 en comparación con el control (Pietruszewski y Kania, 2010). En chícharo aumentó la longitud y el peso seco de las plántulas, el rendimiento y sus componentes (Iqbal et al, 2012;Iqbal et al, 2013). En girasol y caléndula francesa expuestos a 30 s y 3 min a campo electromagnético a 30 y 100 mT, se observó un incremento de 90% en la germinación y 400% en la emergencia de las plántulas, respectivamente (Afzal et al, 2012;Matwijczuk et al, 2012).…”