Seed Germination And Seedling Growth Pdf

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The aim of this study was to investigate the effects of music on lettuce and alfalfa seed germination and seedling growth. For the duration of the study, music was played for 12 hours each day for seven days.

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In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Effects of cold plasma treatment on soybean Glycine max L. Merr cv. Zhongdou 40 seed germination and seedling growth were studied. Germination and vigor indices significantly increased by Seed's water uptake improved by Characteristics of seedling growth, including shoot length, shoot dry weight, root length and root dry weight, significantly increased by The seed reserve utilization, including weight of the mobilized seed reserve, seed reserve depletion percentage and seed reserve utilization efficiency significantly improved by cold plasma treatment.

In addition, soluble sugar and protein contents were Compared to a These results indicated that cold plasma treatment might promote the growth even yield of soybean. Soybean Glycine max L. Merr is a major worldwide oilseed crop. Although soybean production reached 26 million metric tons, with an average yield of 1.

Soybean seeds have thick and impermeable testae, resulting in poor germination, long germination time and low germination uniformity, which subsequently leads to poor establishment and yield reduction 2. Promoting seed germination is the most direct way to improve soybean production 2.

Methods for promoting seed germination are physical methods magnetic treatment, sunlight, ultraviolet light and hot water soaking and chemical methods chemicals, fungicides and hormones 3 , 4 , 5 , 6. Although these methods can promote germination to a certain extent, they are time consuming, labor-intensive and produce chemical residues.

Cold plasma treatment is a fast, economic and pollution-free method to improve seed performance and crop yield 7 , 8. It has essential roles in a broad spectrum of developmental and physiological processes in plants, including reducing the bacterial bearing rate of seeds, changing seed coat structures, increasing the permeability of seed coats and stimulating seed germination and seedling growth 9 , 10 , This phenomenon has been demonstrated in several plants such as Chenopodium album 11 , Oryza sativa 12 , Triticum aestivum 13 , Lycopersicon esculentum 14 and Solanum melongena L In addition, plasma treatment also could improve the physiological metabolism of the plant, such as dehydrogenase activity, superoxide dismutase 14 and peroxidase activities 16 , photosynthetic pigments, photosynthetic efficiency and nitrate reductase activity Plasma treatment could significantly increase crop yields.

Jiang et al. However, reports about the effects of cold plasma on soybean are limited. The aims of the study were 1 to investigate the effects of cold plasma treatment on seed germination, seedling growth and seed reserve utilization of soybean and 2 to explore the mechanisms of the effects of plasma on promoting seed germination and seedling growth of soybean.

The effect of cold plasma on seed germination of soybean varied with different treatment power levels Table 1. No treatment had a significant effect on the germination potential or rate. The T1 and T2 treatments significantly increased the germination index by The vigor index was significantly increased The maximum germination potential, germination rate, germination index and vigor index were obtained from the T2 treatment, which indicated that the T2 plasma treatment could improve the germination of soybean seeds.

The germination data was well fitted by the Richards' function Fig. But no differences were found among Qu and Sk parameters by cold plasma treatments Table 2. The effects of cold plasma on soybean seedling growth are shown in Figure 2. The shoot length and dry weight of shoots from T2 treated seeds were However, the T1 and T4 treatments had no significant effects on shoot growth Fig.

The lengths of root from T2 and T3 treated seeds were 8. No significant differences in root length were found between T1 or T4 and the control Fig. The dry weights of root from T1 and T2 treated seeds were significantly higher than that of the control by Over all, the lengths and dry weights of the roots increased more than the lengths and dry weights of the shoots when subjected to the T2 treatment compared with the control.

The water uptake of soybean seed is shown in Figure 3. The T2 treatment had the best water uptake promoting effect, which was The apparent contact angle is shown in Figure 4. The apparent contact angle of the control was The T2 and T3 treatments dramatically decreased the apparent contact angle by No significant differences in apparent contact angle were found between T1 or T4 and the control.

The lowest apparent contact angle occurred using the T2 treatment. The weight of the mobilized seed reserves of the control was T1, T2 and T3 treatments could significantly increase the weight of the mobilized seed reserves by Positive effect of the cold plasma treatment on the seed reserve depletion percentage was similar to that of the weight of the mobilized seed reserve. Compared with the control, the seed reserve depletion percentage was significantly increased by There were no significant differences between T1 or T4 treatments and the control Fig.

Seed reserve utilization efficiencies of T1, T2 and T3 treatments were significantly higher than the control by The best effect of cold plasma on the seed reserve utilization was obtained using the T2 treatment. Effects of cold plasma on the weight of mobilized seed reserves a , seed reserve depletion percentage b and seed reserve utilization efficiency c of soybean.

The soluble sugar content of the control was 1. T2 and T3 treatments significantly increased the soluble sugar contents by The T1 and T4 treatments had no significant effects on the soluble sugar content.

The maximum soluble sugar content was recorded using the T2 treatment. The influence of cold plasma on the soluble protein content of soybean seed is shown in Figure 7. Compared with the control, the T2 and T3 treatment significantly increased the soluble protein content by The T1 treatment had a stimulatory but not significant effect 8. The T4 treatment had no significant effect on the soluble sugar content.

The highest soluble protein content occurred using the T2 treatment. The present study showed that cold plasma had an active effect on soybean seed germination. The germination and vigor indices were increased by cold plasma treatments.

The T2 cold plasma treatment produced the highest stimulatory effect among the different treatments; however, a cold plasma treatment with lower or higher energy levels had no significant influence on seed germination Table 1 and Fig.

Numerous studies found that cold plasma significantly increased seed germination 8 , 9 , For example, Selcuk et al. Dhayala et al. However, these results were not consistent with the findings of Volin et al. Because they used fluorocarbon plasma, the characteristics of seed coats were modified via plasma-deposition of hydrophobic materials, which would reduce water uptake, leading to delayed seed germination. Furthermore, the Richards' function was used to fit the germination process of soybean seed treated by cold plasma.

A number of studies have suggested that plasma treatment promote seedling growth and the development of plants 9 , 10 , Zhou et al. The present study demonstrated that a cold plasma treatment promoted soybean seedling growth, especially the T2 treatment. However, if the cold plasma treatment used a lower or higher energy level then no significant effect was observed on seedling growth Fig. Effect of cold plasma was more dramatic on root growth than shoot growth. There may be an indirect association between seed germination and water uptake.

Many studies have suggested that a plasma-induced elevation in the seed germination and seedling growth rates might be associated with the water uptake of seeds 11 , The present study found that the cold plasma treatment improved the water uptake of soybean seed Fig.

This result agreed with the findings of Bormashenko et al. The altered seed coat could increase the hydrophilic ability of the seed and eventually improve the water uptake of the seed.

The wettability of seed can be reflected by the apparent contact angle. The present study found that the cold plasma treatment significantly decreased the apparent contact angle Fig. The plasma treatment could change the chemical structure and the roughness of the surface and finally lead to a dramatic change of wetting behavior of the seed, which may account for the increase in water uptake of seed The increased absorptive ability is accompanied by the increased ability to absorb nutrients, which promotes the growth of plant seedlings.

Our study showed that the cold plasma treatment significantly increased the weight of the mobilized seed reserves, seed reserve depletion percentage and seed reserve utilization efficiency of soybean Fig. Seed reserves are major factors that determine the success of early growth during the development of young seedlings 2.

It has been proposed that seedling dry weight was significantly related to seed reserve mobilization and the seed reserve depletion percentage 2. According to Dobrynin et al. Soluble sugar, the photosynthetic product of plants and the main form of carbohydrate, plays a dramatic role in plant metabolism.

Many studies showed that the soluble sugar content was closely related to photosynthesis and yield 27 , Soluble protein plays an important role in the growth of the plants and is a very important component of numerous plant enzymes, which can reflect the overall metabolism of the plant In the present study, cold plasma pre-treatment significantly increased the soluble sugar and protein contents compared with those of the control Fig.

Yin et al.

Seed and Seedling Biology

Plant Growth Substances pp Cite as. Appropriate environmental conditions such as available water, proper temperature, oxygen, and, in some cases, light must be supplied. Unable to display preview. Download preview PDF. Skip to main content.

Effects of cold plasma treatment on seed germination and seedling growth of soybean

This study was conducted to evaluate the effect of metals on wheat and bean species. The inhibition caused by these metals was depending on the concentration used, the metal itself and the plant species. The species had reduced seed germination, root and shoot lengths, tolerance index and percentphyto-toxicity with increasing concentrations of metals.

Seed Germination and Seedling Growth

Vermicompost tea, an aqueous extract of vermicompost, may contain a series of bioactive molecules as well as microbial populations derived from the parent material, which may be enhanced during the production of extracts Edwards et al. Although there is still insufficient information on the chemical and biological properties of vermicompost extracts, water-extractable mineral nutrients and biologically active metabolites such as humic acids as well as plant growth regulators present in vermicompost would be extracted during the brewing cycle Arancon et al. These compounds may enhance initial root development, nutrient uptake, and plant growth. Vermicompost tea has been studied mainly for its effect on disease suppression and yield of some horticultural plant species, whereas there is limited information on the effects of vermicompost extracts on the germination and early seedling growth of vegetable crops.

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Effects of cold plasma treatment on soybean Glycine max L.

Most users should sign in with their email address. If you originally registered with a username please use that to sign in. To purchase short term access, please sign in to your Oxford Academic account above. Don't already have an Oxford Academic account? Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.

Plant Abio-Stress and Bioresources Utilization for Sustainable Development

Maize is susceptible to drought stress, especially during germination. The experiment of seed germination and seedling growth of two maize varieties under different concentration of mannitol solution was carried out. Four mannitol concentrations were set: 0, , and mM, and the corresponding solution osmotic potential was: 0, Results indicated that Zhengdan germinated more quickly and in greater numbers than Liansheng The germination rate, germination potential, shoot and root fresh weight, shoot and root length of two maize varieties both decreased under drought stress, but they decreased more in Liansheng15 than in Zhengdan

Switchgrass is a perennial C4 plant with great potential as a bioenergy source and, thus, a high demand for establishment from seed. This research investigated the effects of ultrasound treatment on germination and seedling growth in switchgrass. Using an orthogonal matrix design, conditions for the ultrasound pretreatment in switchgrass seed, including sonication time factor A , sonication temperature factor B and ultrasound output power factor C , were optimized for germinating and stimulating seedling growth indicated as plumular and radicular lengths through modeling analysis. The results indicate that sonication temperature B was the most effective factor for germination, whereas output power C had the largest effect on seedling growth when ultrasound treatment was used. Combined with the analyses of range, variance and models, the final optimal ultrasonic treatment conditions were sonication for

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A series of seed priming experiments were conducted to test the effects of different pretreatment methods to seed germination, seedling growth, and seed yield traits in maize Zea mays L. Results indicated that the seeds primed by gibberellins GA , NaCl, and polyethylene glycol PEG reagents showed a higher imbibitions rate compared to those primed with water. The final germination percentage and germination rate varied with different reagents significantly.

Noticeable differences in germination indices and seedling growth particularly root growth and fresh weights were observed in a dose-dependent manner.

Salinity is a major constraint in crop production in saline prone areas of Bangladesh. Therefore, a study was carried out in order to investigate the effect of different levels of NaCl salinity stress on seed germination and seedling growth of tomato. Seeds were placed in petridish for germination and the seedlings were allowed to grow for ten days. Results showed that percent seed germination decreased with increasing salt concentration in the germinating media.

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Yusef seed germination and seedling growth are analyzed and presented. The seeds were exposed to DBD plasma with , , and W powers for 15 s.

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