• Title/Summary/Keyword: Seed treatments

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A Proposed Model for Prosowing Seed Treatments to Promote Germination and Seedling Emergence (발아 및 입묘율 향상을 위한 파종전 종자처리 모형설정에 대한 제언)

  • Kang, Jin-Ho;Yoon, Soo-Young
    • Korean Journal of Medicinal Crop Science
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    • v.11 no.5
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    • pp.321-328
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    • 2003
  • Various presowing seed treatments have been used to enhance the rates of germination and afterward seedling emergence. Seeds treated by them occasionally have not shown the same rate in indoor and field. The presowing treatments considering germination mechanism and factors affecting germination should be totally included in indoor experiments so that the results drawn could be reproduced in the field. Seed drying after the treatments and field conditions after sowing especially able to show Phytochromemediated responses related to light treatment must be determined prior to force the treatments to seeds. After set up these prerequisites to promote the rates of germination and emergence, many seed treatments proposed so far must be fixed how to be done; alone, sequential and simultaneous.

Effects of Presowing Seed Treatments on Improvement of Seed Germination and Seedling Emergence of Onion (양파의 발아 및 입묘 향상을 위한 종자처리의 효과)

  • 강진호;정은호;김만배;박정민
    • Korean Journal of Plant Resources
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    • v.17 no.3
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    • pp.219-226
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    • 2004
  • Transplantings of onion (Allium cepa L.) seedlings are required for higher germinability and uniformity. This study was done to determine effects of various seed treatments (seed cleaning, priming, GA$_3$, prechilling, drying, and light quality during seed drying) on germination and seedling emergence. Nongwoodaego and Changnyungdaego were used as cultivars for checking seed germination, and two cultivars and Cheonjuguhyeonghwang were investigated with seedling production rate. Seed cleaning using water prior to the other treatments greatly increased germination rate. Priming with 200mM Ca(NO$_3$)$_2$ solution somewhat alleviated the germination rate while GA$_3$ did not. Prechilling had the highest rate among the treatments. Seed drying after prechilling enhanced the rate compared to non drying, and during drying the prechilled seeds red light illumination showed the greatest rate in comparison with dark, blue, and far-red ones. Seedling production rate was enhanced in sequential treatments of seed cleaning, prechilling for 3 to 5 days, and red light treatment during 6 hour seed drying.

Physical Dormancy in Seeds of Chinese Milk Vetch (Astragalus sinicus L.) from Korea

  • Kim, Sang-Yeol;Oh, Seong-Hwan;Hwang, Woon-Ha;Kim, Sang-Min;Choi, Kyung-Jin;Kang, Hang-Won
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.53 no.4
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    • pp.421-426
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    • 2008
  • Freshly harvested seed of Chinese milk vetch (Astragalus sinicus L.; CMV) was strongly dormant because of hardseedness. Seeds of freshly harvested germinated only 8% while clipping the seed coat completely overcome the innate dormancy, which indicates inhibition of germination of the seed is mainly due to seed coat (87%). The dormant (intact) hard seeds did not imbibe water whereas the non-dormant (clipped) seeds took up rapidly. In natural environment condition, the hard seed coat dormancy was broken only after 5 months after seed harvest. To break such a strong seed coat dormancy, the chemical and heat treatments were effective. Concentrated sulfuric acid was more effective than dry heat and hot water treatments. Hot water treatment improved germination but the germination percentage was less than 41%. Treatments increased germination due to its effect on the seed coat integrity. A scanning electron microscope reveled that disruption of seed coat layers and subsequent development of numerous crack in the hilum region of the seed and on the seed coat surface of concentrated sulfuric acid treatment and formation of cracks in the dry heat treatments, respectively, were observed in the seed coat surface, which served as water entry points.

Yield and Seed Quality as Affected by Water Deficit at Different Reproductive Growth Stages in Soybean

  • Kim, Wook-Han;Hong, Byung-Hee;Kim, Seok-Dong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.44 no.4
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    • pp.321-329
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    • 1999
  • The effect of water deficits on soybean [Glycine max (L.) Merr.] could appear on seed quality through changes of morphological plant characteristics. Two Korean genotypes, Hwangkeum (determinate growth habit) and Muhan (indeterminate growth habit), were used to examine the influences of treatment stage and method of water deficit during reproductive growth period on yield and seed quality of soybean. Water deficit at R5 or R6 stages was as damaging to seed quality as double water-deficit treatments at R2+R5 or R2+R6. However, seed from double water-deficit treatment tended to have lower oxidation-reduction potential compare to the corresponding single water-deficit treatment. In comparison with Muhan, Hwangkeum had significantly greater oxidation-reduction potential value. Seed yield per plant in both genotypes depended greatly on seed yield of branches. However, the proportion of number of branch seed to total seed umber in Hwangkeum was increased as the water deficit was applied during later reproductive stage, whereas, in Muhan the proportion was lower. Water-deficit treatments including the single and double water-deficit treatments and non-stressed treatment were able to be classified into five groups for Hwangkeum and four groups for Muhan based on the influences on yield components, number of pod, number of seed, and single seed weight, using principal component analysis. In both genotypes, R2+R5 water-deficit treatment decreased number of pod and seed, but increased single seed weight. On the contrary, R6 or R2+R6 stress increased the pod and seed number, but decreased single seed weight.

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Protection of Canola (Low Glucosinolate Rapeseed) Meal and Seed Protein from Ruminal Degradation - Review -

  • Mustafa, A.F.;McKinnon, J.J.;Christensen, D.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.4
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    • pp.535-542
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    • 2000
  • Canola meal and seed are poor sources of ruminal undegraded protein (RUP). On average, canola meal and canola seed contains 35 and 14% RUP, respectively. Several protection methods are effective in reducing ruminal degradation of canola protein and in increasing RUP without affecting total tract protein digestibility. Heat (e.g., dry heat, moist heat and jet-sploding) and chemical (e.g., formaldehyde) treatments are the most common methods used to reduce ruminal degradability of canola protein. In most cases, heat treatments were found to be more effective than chemical treatments in protecting canola protein form ruminal degradation. Despite improvement in RUP content and intestinal availability of RUP, data form several studies showed little or no improvement in animal performance as a result of increasing the RUDP level of canola meal and seed.

Comparison of Fermentation Characteristics of Korean Traditional Alcoholic Beverage with Different Input Step and Treatment of Rice and Nuruk (Korean-Style Bran Koji) (원료 쌀과 누룩의 처리 및 첨가방법이 다른 전통주의 발효특성 비교)

  • Kim, In-Ho;Park, Wan-Soo;Koo, Young-Jo
    • Journal of the Korean Society of Food Culture
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    • v.11 no.3
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    • pp.339-348
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    • 1996
  • Physicochemical and sensory characteristics of Korean traditional alcoholic beverages, such as Kwahaju, Sokokju, Baikhaju, Samhaeju and Hosanchun were investigated during fermentation with the difference of input step and treatment of rice and Nuruk (Korean-style bran koji). pH values in all treatments were similar to be ranged $3.1{\sim}3.2$, but acidity of the treatment brewed without seed mash was $1.5{\sim}2$ times higher than that of the treatment brewed with seed mash. The concentration of alcohol in all treatments increased as the concentration of the Nuruk increased. The alcohol concentrations of Samhaeju and Hosanchun ranging from 6.5% to 7.7% were higher than those of Kwahaju, Sokokju and Baikhaju ranging from 7.9% to 10.6%. Residual reducing sugar contents of Kwahaju, Sokokju and Baikhaju ranging from 4.6 g/L to 9.7 g/L were lower than those of Samhaeju and Hosanchun ranging from 14.2 g/L to 15.5 g/L. The consumed total sugar contents of Kwahaju, Sokokju and Baikhaju ranging from 125.4 g/L to 159.2 g/L were higher than those of Samhaeju and Hosanchun ranging from 111.2 g/L to 123.8 g/L, and the treatments brewed with seed mash showed more sugar consumption than the treatments brewed without seed mash. Sensory quality in the treatments brewed with seed mash was better than those of without seed mash. Concentration of Nuruk and preparation of seed mash from it were critical factors compared to input step and treatment of rice in Korean traditional alcoholic beverage brewing.

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Effects of Soybean Oil or Whole Cotton Seed Addition on Accumulation of Conjugated Linoleic Acid in Beef of Fattening Brahman×Tai-Native Catle

  • Suksombat, Wisitiporn;Chullanandana, Khukhuan
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.10
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    • pp.1458-1465
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    • 2008
  • Effects of soybean oil or whole cotton seed addition on conjugated linoleic acid (CLA) and performance of fattening Brahman$\times$Thai-Native cattle were studied. Eighteen fattening cattle averaging $241{\pm}24kg$ body weight and approximately 1 year old were stratified by live weight into three groups and randomly assigned by group to one of three dietary treatments. The treatments were control (concentrated 14% crude protein), control and supplemented with 170 g/d soybean oil, control plus 170 g/d of oil from whole cotton seed. All animals were weighed before and after the experimental period and 4 cattle per treatment were randomly slaughtered then carcass measurements were obtained. There were no statistically significantly differences in the final body weight, average daily gain and dry matter intake among treatments. However, the crude protein intake was significantly decreased (p<0.01) when whole cotton seed was fed compared with control and soybean oil treatments. The carcass composition and carcass characteristics were not significantly different in Longissimus and Semimembranosus muscle by feeding soybean oil and whole cotton seed compared with the control treatment. Supplementation of soybean oil increased (p<0.01) cis-9, trans-11 CLA by 116% in Longissimus muscle and by 240% in Semimembranosus muscle. However, whole cotton seed did not increase cis-9, trans-11 CLA in both muscles. The present study successfully increased cis-9, trans-11 CLA content of muscle lipids by soybean oil but not by whole cotton seed.

Effect of Pre-sowing Treatments on Seed Germination and Seedling Growth of Canarium resiniferum, A Rare Native Tree of Bangladesh

  • Hasnat, G.N. Tanjina;Hossain, Mohammed Kamal;Alam, Mohammed Shafiul;Hossain, Md. Akhter
    • Journal of Forest and Environmental Science
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    • v.33 no.3
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    • pp.226-232
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    • 2017
  • Dhup (Canarium resiniferum) is an economically and aesthetically important rare native tree species of Bangladesh. In natural condition 78.5-98.7% seeds do not germinate due to inhibition by hard seed coat, seed predation and unfavorable environmental conditions. A study was conducted in the Seed Research Laboratory and nursery of Institute of Forestry and Environmental Sciences, Chittagong University, Bangladesh in 2013 to find out appropriate pre-sowing treatments for maximizing germination and initial seedling growth. Eleven pre-sowing treatments were provided in both the seeds sown in polybags and seeds sown in propagator house. Results revealed that, germination started at first (after 20 days of seed sown) in seeds immersed in water at room temperature for 24 hours and germination completed within 38 days. Significantly higher (p<0.05) germination percentage (33%), germination energy (16.7%), plant percent (33%) and germination value (0.4) was found with seeds immersed in water at room temperature for 24 hours. Seedling height measured at three, four and five months after the seed germination in case of seeds treated by immersion in water for 24 hours was also greater than others. Therefore, pre-sowing treatment by immersion in water at room temperature for 24 hours was more effective in germination and production of quality vigor seedlings of Dhup.

The Effect of Different Periods of Seed Storage on Germination of Genus Lespedeza (Lespedeza속(屬)의 종자저장기간별(種子貯藏期間別) 발아시험(發芽試驗))

  • Han, Young Chang
    • Journal of Korean Society of Forest Science
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    • v.31 no.1
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    • pp.30-36
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    • 1976
  • In order to guide the project for tree seedling production and direct seeding afforestation by introduction of genus Lespedeza, studies were conducted on the effect of seed storage period and on percentage and rate of germination through various kinds of treatments. L. bicolor, L. cyrtobotrya, and L. japonica. intermedia seed were storeds at different period of time. The results obtained are summarized as follows: 1. Germination capacity was not reduced until 28 months after harvest. However, germination was very poor 40 months after harvest, with less than 30% germination obtained by germination treatments. 2. Removal of seed coat and cone, sulphuric acid treatments were more effective in increasing germination than other treatments. Especially, most seeds germinated one week earlier than other treatments by removal of the seed coat. 3. The seeds stored for a short period of time showed more rapid germination compared to seeds which were stored for long period.

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Performance, Digestibility and Carcass Characteristics of Growing/Finishing Pigs Fed Barley-Based Diets Supplemented with an Extruded or Unextruded Blend of Peas and Canola Seed or Meal

  • Thacker, P.A.;Qiao, Shiyan
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.1
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    • pp.102-105
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    • 2002
  • Seventy-two crossbred pigs weighing an average of 41.5 kg were assigned on the basis of sex, weight and litter to one of four dietary treatments in a factorial (4 treatments${\times}$2 sexes) arrangement. The control diet was based on barley and soybean meal while the experimental treatments consisted of diets in which a portion of the dietary protein was supplied by 20% of a 50:50 blend of extruded ($130^{\circ}C$ for 20 to 25 sec) peas and full-fat canola seed, 20% of a 50:50 blend of unextruded peas and full-fat canola seed or a diet containing 10% peas, 6% canola meal and 4% canola oil (to equal the level of canola oil provided by 10% whole canola seed). Digestibility coefficients for dry matter, crude protein and gross energy were significantly higher (p<0.05) for the control diet than for the other three diets. Extrusion produced no beneficial effects (p>0.05) on nutrient digestibility and there were no differences in digestibility between the diet based on intact canola seed compared with the diet containing canola meal and oil. Choice of protein supplement had no significant effects on gain, feed intake or feed conversion during the grower or finisher phases and over the entire experimental period. Extrusion of the pea-canola blend produced no beneficial effects on pig performance as the performance of pigs fed either the extruded or unextruded blend of peas and canola seed was similar. In addition, the performance of pigs fed diets containing intact canola seed was similar to that of pigs fed canola meal and oil. Castrates gained faster and consumed more feed than gilts (p<0.05). However, their feed conversion was poorer than that of the gilts during the finisher period. There were no significant differences in carcass traits between pigs fed the control and any of the experimental treatments. Extrusion had no effect on carcass traits and the carcasses of pigs fed canola meal and oil did not differ from those of pigs fed whole canola seed. Castrates had a significantly lower dressing percentage, lower estimated lean yield but greater loin fat depth than gilts (p<0.05). The results of this experiment indicate that peas in combination with canola seed or canola meal are an acceptable alternative to soybean meal as a protein supplement for use in growing-finishing swine diets. Extrusion did not appear to have any beneficial effects on the nutritional value of the canola seed-pea blend as nutrient digestibility, growth performance and carcass traits were similar for pigs fed the unextruded blend of peas and canola seed compared with the extruded product. Since the process adds to the cost of the raw products, its use is unlikely to be economical.