• Title/Summary/Keyword: seed quality

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Investigation of soybean sprout rot and the elimination of improper seeds for quality control on soybean seedlots

  • Lee, Jung Han;Kwak, Youn-Sig
    • Journal of agriculture & life science
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    • v.50 no.1
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    • pp.57-64
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    • 2016
  • Soybean sprouts have been a considered a nutrient-rich vegetable for hundreds of years. To evaluate the seedlot quality of soybean sprouts grown, and to evaluate a method for reducing the presence of improper seeds in soybean seedlots, microbes associated with soybean sprout rot were isolated from samples collected. Morphological characteristics and gas chromatography profiles of the cultured fungal and bacterial strains were identified. Eight types of improper seeds were identified: purple stain(Ps), black rot(Br), seed coat black spot(Cb), wrinkled seed(Ws), brown hilum(Bh), seed coat fracture(Cf), unripe seed(Us), and brown seed coat(Bc). The improper seeds were also dipped into 15%, 20%, and 25% NaCl solutions, as well as a saturated solution of NaCl, for 1min. As the NaCl concentration increased, the number of floating improper seeds increased as well. The highest floating rates were observed for the Cf seeds.

Effect of Seed Priming on Quality Improvement of Maize Seeds in Different Genotypes

  • Seo Jung Moon;Lee Suk Soon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.5
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    • pp.381-388
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    • 2004
  • In Korea, production of super sweet corn has been economically feasible and is substituting for traditional sweet corn due to better flavor in recent years. Major limiting factors for super sweet corn production are low field emergence and low seedling vigor. The optimum water potential (WP) for the priming of normal and aged seeds of dent, sweet (su) and super sweet (sh2) corns was studied to improve low seed quality. Seeds were primed at 0, -0.3, -0.6, -0.9, and -1.2 MPa of polyethylene glycol (PEG) 8000 solution at $15^{\circ}C$ for 2 days. Priming effects differed depending on the type of corn, seed quality, and WP of PEG solution. Although WP of priming solution did not influence the emergence rate of extremely high quality normal dent corn seeds, it reduced time to $50\%$ emergence (T50) and increased plumule weight. In contrast, the emergence rate of aged field corn was improved by seed priming at 0 MPa and plumule weight and $\alpha-amylase$ activity was enhanced. The optimum WP for both normal and aged sweet and super sweet corn seeds was between -0.3 and -0.6 Mpa. At the optimum WP emergence rate, $\alpha-amylase$ activity, and content of DNA and soluble protein increased, while T50 and leakage of total sugars and electrolytes reduced.

Establishment of Days after Anthesis(DAA) and Fruit After-ripening Period(FAP) for High-Quality Seed Production of Watermelon (우량 수박종자 생산을 위한 적정 성숙일수 및 후숙일수 확립)

  • Park, Eun-Ji;Lee, Gyu-Bin;Park, Young-Gil;Suh, Jeong-Min;Kang, Jum-Soon
    • Journal of Environmental Science International
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    • v.24 no.12
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    • pp.1681-1689
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    • 2015
  • This study was conducted to investigate days after anthesis (DAA) and fruit after-ripening period (FAP) for seed-harvesting of high quality watermelon seeds. Fruit weight and number of seed per fruit increased according to DAA, while those did not significant about FAP. Ratio of cotyledon at whole seed was higher about 2 to 4% compared to seed coat irrespective of DAA and FAP. Germinability of watermelon was not a significant effect by DAA, however, it had differences by FAP. Percent of germination (PB) was below 50%, when 30 days maturated fruits after anthesis was omitted ripening, while PB was increased to 92% by ripening. In addition, seeds at DAA 40 and FAP 20 were higher general seedling vigors (hypocotyl length, diameter etc.) in BP test. Results indicated that considering seed productivity, it had maximized seed viability at DAA 40 and FAP 20.

Effectiveness of Zizyphus seed (Ansim-san) for Insomnia in Stroke Patients (중풍환자의 불면에 대한 산조인 단미(안심산)의 유효성 및 적응증 평가)

  • 정기현;노기환;이대식;문상관;조기호
    • The Journal of Korean Medicine
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    • v.22 no.4
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    • pp.101-106
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    • 2001
  • Objectives : Zizyphus seed has long been used in hypnotics and sedatives in oriental medicine, and it is reported that the Zizyphus seed elicited a variety of pharmacological actions besides CNS depression. We did a clinical study on the effectiveness of Zizyphus seed (Ansim-san) for insomnia in stroke patients. Methods : To 41 stroke patients suffering from insomnia, we administered the extract of Zizyphus seed (Ansim-san). Outcome measures were subjective in nature and included a morning questionnaire, visual analog scales, and observation forms by study personnel. We also, to find the applicable symptom-complex of Zizyphus seed (Ansim-san), examined accompanying symptoms. Results : 1. Zizyphus seed extract use meant that sleep latency was shorter, total sleep time was longer, number of wakenings was lower, wake time during sleep was shorter, sleep quality was improved, condition upon awakening was improved, ability to concentrate was improved, and the patients fell asleep more easily (P<0.001). There were no differences in morning sleepiness. 2. Among accompanying symptoms, an oppressed feeling in the chest was significant (P=0.035) in the patients who improved sleep quality. Conclusions : The results of this clinical study suggest that in stroke patients, Zizyphus seed (Ansim-san) can be effective for insomnia, and significantly effective in patients who have an oppressed feeling in the chest.

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Metrics for Code Quality Check in SEED_mode.c

  • Jin-Kuen Hong
    • International Journal of Internet, Broadcasting and Communication
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    • v.16 no.3
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    • pp.184-191
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    • 2024
  • The focus of this paper is secure code development and maintenance. When it comes to safe code, it is most important to consider code readability and maintainability. This is because complex code has a code smell, that is, a structural problem that complicates code understanding and modification. In this paper, the goal is to improve code quality by detecting and removing smells existing in code. We target the encryption and decryption code SEED.c and evaluate the quality level of the code using several metrics such as lines of code (LOC), number of methods (NOM), number of attributes (NOA), cyclo, and maximum nesting level. We improved the quality of SEED.c through systematic detection and refactoring of code smells. Studies have shown that refactoring processes such as splitting long methods, modularizing large classes, reducing redundant code, and simplifying long parameter lists improve code quality. Through this study, we found that encryption code requires refactoring measures to maintain code security.

Preparation of High Quality Safflower (Carthamus tinctorius L.) Seed Extract by High-Pressure Extraction Process

  • Seo, Il-Ho;Choi, Sang-Won
    • Preventive Nutrition and Food Science
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    • v.14 no.4
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    • pp.373-377
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    • 2009
  • Safflower seed extract was prepared by a high-pressure extraction technology and its quality characteristics were compared to that of other conventional extraction techniques, such ultrasonic and reflux extractions. Safflower seeds were extracted with 80% aqueous ethanol by three above extraction methods, and further fractionated with Diaion HP-20 column chromatography to obtain a partially purified safflower seed extract (PPSSE). Among the three extraction techniques examined, the reflux extraction showed the higher yields of EtOH extract and PPE than the ultrasonic and high-pressure extractions. Levels of most phenolic compounds in the EtOH extract of safflower seed are higher in reflux and ultrasonic extractions than the high pressure extraction, but levels of two serotonin aglycones, N-(p-coumaroyl)serotonin (CS) and N-feruloylserotonin (FS), in PPSSE were higher in the high pressure extraction than the reflux and ultrasonic extractions. In addition, color values (L and a) of the PPSSE were higher in the high-pressure extraction than the reflux and ultrasonic extractions, although there were no significant differences in pH and UV maxima absorption spectra among three extraction techniques. These results indicate that the high-pressure extraction technology is a simple and effective extraction for preparation of a high quality of safflower seed extract containing CS and FS with anti-wrinkle activity.

Effect of the Mixed Rates of Endophyte-free and -infected Seen on the Endophyte Frequency , Dry Matter Yield and Forage Quality of Tall fescue ( Festuca arundinacea Schreb.) (Endophyte 감염과 무감염 종자의 혼파 비율이 톨 페스큐의 endophyte 감염율 , 수량 및 사료가치에 미치는 영향)

  • 이종경;김동암;이성철;최기춘;정종원;정재록
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.17 no.4
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    • pp.363-370
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    • 1997
  • This experiment was carried out to investigate the effect of the mixed rates of endophyte-he and -infected seed on the endophyte fkquency, dry matter yield and forage quality of tall fescue(Festuca arundinacea Schreb.) at the Experimental Field of Grassland and Forage Crops Division, National Livestock Research Institute, Suweon, from 1993 to 1994. The results obtained are summarized as follows: Endophyte frequency was increased with mixed rates of higher endophyte-infected seed, however, it was not different between mixed rates of endophyte-free and -infected seed. DM yield of tall fescue was not different between mixed rates of endophyte-fke and -infected seed, and CP, NDF, ADF and IVDMD contents of forage quality were not influenced by mixed rates of endophyte-he and -infected seed. However, the weed contents were slightly increased with high level of endophyte-free seed. The results demonstrated that endophyk-fke tall fescue did not seem to be greatly weak under poor conditions, if the weed contents were slightly increase.

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Effects of Weed Interference and Starter Fertilizer on Subsequent Seed Germination and Vigour of Soybean (Glycine max [L.] Merr.)

  • Mohammadi, G.R.;Amiri, F.
    • Korean Journal of Weed Science
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    • v.32 no.1
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    • pp.17-24
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    • 2012
  • The study was conducted to investigate the effect of weed interference and starter fertilizer on subsequent soybean seed quality at the Agricultural Research Farm and Laboratory of Razi University, Kermanshah, Iran. Two factorial experiment was laid-outon a randomized complete block design with four replications. First factor was starter fertilizer levels (0 and 25 kg $ha^{-1}$) applied in the forms of monoammonium phosphate, the second factor was different weed interference periods consisted of five initial weed-free periods (in which, plots were kept free of weeds for 0, 15, 30, 45 and 60 days after crop emergence (DAE) and then weeds were allowed to grow until harvest) and five initial weed-infested periods (in which, weeds were allowed to grow for 0, 15, 30, 45 and 60DAE, after which the plots were kept free of weeds until harvest). Full season weedy condition reduced 100-seed weight, seed germination percentage and seedling dry weight by 25.9, 13.3 and 22.5%, respectively and increased mean germination time and seed electrical conductivity by 55.8 and 24.3%, respectively as compared with full season weed-free control. However, the traits under study were not significantly influenced when field was kept free of weeds for at least 45 DAE (R1) or weedy condition was continued for less than 30 DAE (V8). There was a significant and negative correlation between weed biomass and seed weight (r = -0.93), so that when weed free condition was less than 45 DAE or weed infested period was continued for at least 30 DAE, soybean plants produced wrinkled and underdeveloped seeds with lower weights and qualities. Moreover, soybean seed quality reduction due to weed interference was more evident when starter fertilizer was applied and weeds interfered with soybean from the beginning of the growing season. Information from the present study is beneficial in soybean seed production systems and where farmers use the harvested seeds for the following planting.

Monitoring of Rapeseed Damaged During Postharvest Handling

  • Stepniewski, A.
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 1996.06c
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    • pp.539-546
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    • 1996
  • The physical condition of rapeseed delivered to fat industry plants plays a significant role in the formation of the qualitative features of the raw material for oil production and, consequently , of the oil itself. Rapeseed is stored in silos , frequently for months, before it is subjected to processing. During the long storage, the conditions of the seed cover is very important, as the seed cover provides natural protection of the seed against the effect of the environment. Seeds with damaged seed cover are more easily affected by mildew, and the rate of chemical processes. Deteriorating the quality of oil contained in the cotyledons is faster in such seeds. Cracked seed covers facilitates also the growth and development of microorgaism. So as rapeseed damage occurring inthe course of harvest and the post-harvest processing have a negative effect of the quality and quantity of oil the sees contain. The study presented here was aimed at examining the typical process of purcha ing and handling of rapeseed in fat industry plants, in the aspect of the occurrence of mechanical damage to the seeds. Special attention was paid to the condition of rapeseed immediately after combine harvesting : next , the successive stages of technological handling of the seed were examined. observing the operation parameters of the particular machinery and equipment in order to identify those operations which caused deterioration in the quality of the material (sees). Seed samples were taken successively from the following the hopper, prior to cleaning , after cleaning , prior to drying , after drying, from dry rape silo. The total level of damage increased through the handling. The content of unusable contaminants had the tendency to decrease in the successive operations. though the actual values still exceeded levels permitted by standards. The study allow to indicate the operation fo postharvest technological process, which cause the most seed damage as well as gave quantita ive description of the losses occurred.

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Quality Characteristics and Retrogradation Properties of Baked Rice Donut with Psyllium (Plantago ovata Forsk) Seed Husk (차전자(Plantago ovata Forsk)피를 이용하여 제조한 구운 쌀 도넛의 품질 특성 및 노화 특성)

  • Shin, So Yeon;O, Hyeonbin;Joung, Ki Youeng;Kim, Young-Soon
    • The Korean Journal of Food And Nutrition
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    • v.31 no.3
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    • pp.367-377
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    • 2018
  • In this study, baked rice donuts with added psyllium seed husk were manufactured and their quality and retrogradation characteristics were investigated. Control (Con) was made only with wheat flour; Psyllium seed husk in the amount of 8, 12, 16 and 20 grams was added to make rice donuts (P8, P12, P16 and P20). Higher amounts of psyllium seed husk reduced the moisture loss and baking loss, and increased the moisture content and water holding capacity of the donuts. The specific volume of Con was the highest of all the groups. As the amount of psyllium seed husk increased, the lightness and yellowness of the crumb decreased, and the redness of the crumb increased. Hardness also increased as the amount of psyllium seed husk increased. The hardness of P16 was the most similar to that of Con. The scanning electron microscopy images also identified that the structure of the donuts got denser as the amount of psyllium seed husk increased. Rate constant (k) of the rice donuts with psyllium seed husk were lower than that of Con. In conclusion, it is considered that P16 is the sample that is the most similar to Con in terms of texture, but the retrogradation was more retarded in P16 than Con.