STIMULATION OF GERMINATION IN RICE (<i>ORYZA SATIVA</i>L.) BY A STATIC MAGNETIC FIELD

Carbonell, María; Martínez, Elvira; Amaya, J. M.

doi:10.1081/jbc-100100303

Cited by 113 publications

(65 citation statements)

References 8 publications

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“…An improvement in germination potential and seedling vigour due to the influence of magnetic field in the seeds of cereals and vegetables was also observed by Aladjadjiyan (2010); Moon and Chung (2000); and Nimmi and Madhu (2009). Similarly, Carbonell et al (2000) also reported that magnetic seed treatments significantly enhanced germination of rice seeds compared with untreated seeds. Slow germination, emergence pattern and seedling establishment in seeds treated with high strength (125 mT) magnetic field (Tables 1, 2) might be due to unsuitable combination of magnetic field and exposure time.…”

Section: Resultsmentioning

confidence: 93%

Magnetic stimulation of marigold seed

Afzal

Mukhtar

Qasim

et al. 2012

International Agrophysics

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A b s t r a c t. The effects of magnetic field treatments of French marigold seeds on germination, early seedling growth and biochemical changes of seedlings were studied under controlled conditions. For this purpose, seeds were exposed to five different magnetic seed treatments for 3 min each. Most of seed treatments resulted in improved germination speed and spread, root and shoot length, seed soluble sugars and a-amylase activity. Magnetic seed treatment with 100 mT maximally improved germination, seedling vigour and starch metabolism as compared to control and other seed treatments. In emergence experiment, higher emergence percentage (4-fold), emergence index (5-fold) and vigorous seedling growth were obtained in seeds treated with 100 mT. Overall, the enhancement of marigold seeds by magnetic seed treatment with 100 mT could be related to enhanced starch metabolism. The results suggest that magnetic field treatments of French marigold seeds have the potential to enhance germination, early growth and biochemical parameters of seedlings.K e y w o r d s: marigold, seed, stimulation, magnetic field INTRODUCTIONMarigold is grown as an ornamental crop for loose flowers and as bedding plant in landscape. French marigold (Tagetes patula L.) is ideal for rockeries, edging, hanging baskets and window boxes. Both leaves and flowers are equally important from the medicinal point of view. Marigold petals are commercially valuable as a natural source of xanthophylls, pigments used primarily in poultry industry to intensify yellow colour of egg yolk. The essential oil present in different species of Tagetes is largely used in compounding of high-grade perfumes (Kaul et al., 2000). Crop stand establishment is always an important consideration in commercial field production. Similarly, rapid and uniform seedling emergence is the demand of every farmer as it is the foundation on which stand establishment is based and potential yield is determined. But, the emergence and stand establishment of marigold seeds are often slow and extremely erratic, particularly under hot or cool field conditions (Afzal et al., 2009). Currently, direct seeding is also popular among the vegetable and flower farming community in the world. However, it often results in uneven germination, slow emergence and poor stand establishment, but is less expensive initially and widely used in field operations. One of the greatest problems for marigold production is poor plant stand establishment. Magnetic seed pretreatments have been used successfully to improve germination rate and crop establishment, boost growth, development and ultimately yield of many horticultural and agronomic crops (Aladjadjiyan, 2010;Moon and Chung, 2000;Pietruszewski and Kania, 2010). Magnetic field pretreatment not only increased seed germination rate, seedling growth and yield (Balouchi and Sanavy, 2009) but also reduced the attack of pathogenic diseases (De Souza et al., 2006;Yinan et al., 2005). The beneficial effect of magnetic seed stimulation has been associated with various...

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Section: Resultsmentioning

confidence: 93%

Magnetic stimulation of marigold seed

Afzal

Mukhtar

Qasim

et al. 2012

International Agrophysics

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“…Germination rates were higher with magnetic field applications than control group. Many studies showed that 125 mT and 250 mT magnetic treatment produced a biostimulation on the initial growth stages and an increased the germination rate of several seeds such as rice, wheat and barley [18,19,[21][22][23]. Magnetic field application enhanced the percentage of germinated seed on the treated group compared to nonexposed in both Salvia officinalis and Calendula officinalis [14].…”

Section: Resultsmentioning

confidence: 99%

“…The investigations have shown that the treatment of the seeds with magnetic field increases the germination of nonstandard seeds and improves their quality [17]. Positive effects of the stationary magnetic field on the plant seed germination have been recorded with several plant species [14,[18][19][20][21][22][23]. The objective of this study was to investigate the effect of magnetic field on M. officinalis seed germination.…”

Section: Introductionmentioning

confidence: 99%

Effect of Magnetic Field Treatments on Seed Germination of Melissa officinalis L.

Ulgen

Yıldırım

Türker

2017

International Journal of Secondary Metabolite

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Melissa officinalis L., commonly known as lemon balm, is a perennial herb belonging to Lamiaceae family. It has therapeutic properties, such as sedative, carminative, antispasmodic, anti-viral, wound healing, digestive, diuretic, diaphoretic, anti-septic and anti-thyroid. Lemon balm has been used for the treatment of headache, indigestion, colic, nervousness, cardiac problems, depression, rheumatism, indigestion, hypersensitivities, anxiety and depression traditionally. Beneficial effects of lemon balm are ascribed to the phenolic compounds such as rosmarinic acid, tannins and flavonoids. Studies showed that magnetic field applications in agriculture can be used to improve the quality and quantity of the product. Positive effects of the stationary magnetic field on the plant seed germination have been recorded with some plant species. In this study, effects of magnetic field on M. officinalis seeds were investigated. Seeds were sterilized in 0.1 % HgCl2 for 10 min and 70 % Ethanol for 1-2 min. After surface sterilization of the seeds, they were placed in petri dishes containing Murashige and Skoog's medium with sucrose and agar. Neodymium block magnets (100 X 50 X 5 mm) were used to create magnetic fields (50 mT and 100 mT). Ten seeds were placed in each petri plates and 10 petri plates were used for each treatment. Petri dishes containing surface sterilized seeds were placed in 3 different conditions [without magnetic field application (control) and magnetic field applications (low-50 mT and high-100 mT)] and the germination (radicle protrusion) was assessed. Seeds were exposed to magnetic fields for 1, 3, 6, 12, 24, 48, 72, 144 and 240 hours. The number of germinated seeds was recorded for 20 days. Best seed germination was obtained with 100 mT magnetic field application for 1 hour (52 %). Seed germination rate was rather low (28 %) without magnetic field application (control). In consistent with 100 mT magnetic field application, 1 hour exposure to 50 mT magnetic field gave better germination rate (36 %) than control. The lowest seed germination was observed with 240 hours exposure to both magnetic fields (27 % for 100 mT and 16 % for 50 mT). Magnetic field applications also decreased the seed germination time. Although seed germination was observed in 11. day with control, it was obtained in 7. day with both magnetic field applications. Magnetic field application enhanced the percentage of germinated seed and shortened the period of seed germination in M. officinalis.

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“…Metabolic substances as plants photosynthetic pigments could be affected by MF. It has been found that an increase occurs in chemical reactions of plants under MF, which has a positive effect on photochemical activity, respiration ratio and enzyme activity [5][6][7]. Chlorophyll a is the most important assimilatory pigment involved directly in the conversion of solar energy into chemical energy at the molecular level, thus chlorophyll content is an indicator of plant health and productivity.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Fields Induce Changes in Photosynthetic Pigments Content in Date Palm (Phoenix dactylifera L.) Seedlings

Dhawi¹,

Al-Khayri²

2009

TOASJ

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Growth, development and plants productivity are usually affected by photosynthetic pigments activity. Magnetic fields are known to induce biochemical changes and could be used as a stimulator for growth related reactions including affecting photosynthetic pigments. The impact of magnetic field strengths on chlorophyll and carotenoids were investigated in this study through the use of date palm (Phoenix dactylifera L.) seedlings. To study the effects of magnetic treatments on photosynthetic pigments, date palm seedlings were exposed to magnetic fields in two experiments. In the first experiment, seedlings were treated with static magnetic field at three levels of (10, 50 and 100 mT) and different durations (30, 60, 180, 240 and 360 min). At the second experiment, seedlings were treated with alternating magnetic field at 1.5 T for different durations (1, 5, 10 and 15 min). The photosynthetic pigments (chlorophyll a, chlorophyll b, carotenoids and total pigments) were assayed using spectrophotometric methods. Results indicated that pigments content (chlorophyll a, chlorophyll b, carotenoids and total pigments) was significantly increased under static magnetic field. The highest measurements were recorded at 100 mT, after 360 min of exposure. On the other hand, alternating magnetic field has decreased photosynthetic pigments content after 10 min of treatment with 1.5 T. Low magnetic field doses had a simulative effect on photosynthetic pigments whereas high doses had a negative effect. Chlorophyll a and carotenoids were more affected than chlorophyll b. Magnetic fields treatment could be used to enhance plant growth and productivity.

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STIMULATION OF GERMINATION IN RICE (ORYZA SATIVAL.) BY A STATIC MAGNETIC FIELD

Cited by 113 publications

References 8 publications

Magnetic stimulation of marigold seed

Magnetic stimulation of marigold seed

Effect of Magnetic Field Treatments on Seed Germination of Melissa officinalis L.

Magnetic Fields Induce Changes in Photosynthetic Pigments Content in Date Palm (Phoenix dactylifera L.) Seedlings

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