• 제목/요약/키워드: Seed treatments

검색결과 606건 처리시간 0.027초

칡의 대량 생산이용 및 생리활성물질에 관한 연구 I. 진한황산 처리가 칡 종자의 발아 및 생육에 미치는 영향 (Studies on Mass Production , Utilization and Bioactive Substance of Kudzu I. The effect of concentrated sulfate on germination rate and growth chracte in kudzu)

  • 정대수;김대진
    • 한국초지조사료학회지
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    • 제13권3호
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    • pp.190-194
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    • 1993
  • This experiment was conducted to investigate the effects of concentrated sulfate on the germination rate, growth rate and the productivity of weight of kudzu (Pueraria thwnbergiana Bentham). The germination rate of kudzu seed by one or two treatment retreatment with the concentrated sulfate for minutes of 5. 10, 15 and 20 were determined respectively. The results obtained were summarized as follows; 1. In the time of concentrated sulfate treatment, the germination rate was the highest in the once treatment for 20 minute. and the retreatment was higher than the once treatment in the germination rate. 2. The changes of plant length by growth stage was grown gradually until for 60 day and rapidly after for 60 day. The growth rate was the highest in treatment for 15 minute than in other treatments. 3. The stem diameter. stem weight. fresh weight and root weight by the treatment with sulfate 15 minute as the treatment with once were high degree of productivity. 4. The number of branch. number of nodes and root weight by the growth stage were higher growth rate before for 90 day than after for 90 day, however stem weight and fresh weight were high degree of productivity after for 60 day.

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Gibberellin Effects on Inflorescence Development, Bud Dormancy and Root Development in North American Ginseng

  • Rolston, L.J.;Proctor, J.T.A.;Fletcher, R.A.;Murr, D.P.
    • Journal of Ginseng Research
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    • 제26권1호
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    • pp.17-23
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    • 2002
  • Gibberellic acid (GA) was applied to field-grown 3-year-old North American ginseng (Panax quinqueiolius L.) between 1 and 4 times, before and during bloom in 1999. Applications of both GA$_3$ and GA$\sub$4+7/ four times (x4) to the developing inflorescences increased maximum pedicel length, and seed head diameter and height. Treatment with GA$\sub$4+7/ increased mean and total root fresh weight linearly, whereas those treated with GA$_3$ did not show similar increases. Both GA$_3$ and GA$\sub$4+7/ at 50, 100 and 200 mg L$\^$-1/ (x4) increased the incidence of breaking of dormancy of perennating buds with GA$_3$ being twice as effective as GA$\sub$4+7/. Both GA$_3$ and GA$\sub$4+7/ treatments resulted in an increased number of new bud initials forming per root, with the number of new initials per root increased two-fold by the GA$_3$ sprays compared to GA$\sub$4+7/.

저온저장중 개갑인삼종자내의 생리활성물질 동정 및 변화 (Identification and Changes of Physiologically Active Substances During Chilling Storage of Dehisced Ginseng Seeds)

  • 권우생;백남인;이정명
    • Journal of Ginseng Research
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    • 제21권1호
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    • pp.13-18
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    • 1997
  • Identification and changes of physiologically active substances during chilling storage of dehisced ginseng (Panax ginseng C. A. Meyer) seeds were analyzed using various preparatory separation methods and purification columns; Dowex 50W and silica gel columns. Seven components with Rf values of 0.20, 0.40, 0.58, 0.66, and 0.70 In solvent system, $CHCl_3$:MeOH=3:1 (v/v), Rf values of 0. 63 and 0.74 in solvent system, $CHCl_3$:MeOH:$H_2O$:=7:3:1 (v/v) were obtained through Dowex 50W and silica gel column chromatographies. Two components with Rf values of 0.20 and 0.63 in the all chilling treatments were detected in the extract obtained through both chromatographies, and only the former component was gradually increased till 4 weeks of chilling storage and then rapidly decreased from 8 to 16 weeks. UV spectra of Rf values of 0.66 and 0.56 were similar to that of cytokinin, but their physiological activities were not found. Rf values of 0.20 showed activity by radish cotyledon expansion bioassay. The component with Rf value of 0.20 was revealed to have a naphthalene in the proposed chemical structure by various NMR techniques.

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Preparation and Characterization of β-C3N4 in Presence of Seed Carbon Nitride Films Deposited by Laser-Electric Discharge Method

  • Kim, J.I.;Zorov, N.B.;Burdina, K.P
    • Transactions on Electrical and Electronic Materials
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    • 제3권3호
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    • pp.29-33
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    • 2002
  • A procedure was developed for preparing bulk carbon nitride crystals from a polymeric $\alpha$ -C$_3$N$\_$4.2/ at high pressure and temperature in the presence of seeds of crystalline carbon nitride films prepared by a high voltage discharge plasma combined with pulsed laser ablation of graphite target. The samples were evaluated by x-ray photoelectron spectroscopy (XPS), infrared (IR) spectroscopy, Auger electron spectroscopy (AES), secondary-ion mass spectrometry (SIMS), scanning electron microscopy (SEM) and x-ray diffraction (XRD). Notably, XPS studies of the film composition before and after thermobaric treatments demonstrate that the nitrogen composition in $\alpha$ -C$_3$N$\_$4.2/ material initially containing more than 58% nitrogen decreases during the annealing process and reaches a common, stable composition of ~45%. The thermobaric experiments were performed at 10-77 kbar and 350-1200 $\^{C}$.

Growth and Development of Platycodon grandiflorus under Sensor-based Soil Moisture Control on Open Farmland and Pot Conditions

  • Lee, Ye-Jin;Kim, Kyeong-Soo;Lim, So-Hee;Yu, Young-Beob;Bae, Chang-Hyu
    • 한국자원식물학회지
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    • 제34권6호
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    • pp.608-615
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    • 2021
  • Soil moisture control system including soil sensing and automatic water supply chain was constructed on open farmland and pot conditions. Soil moisture was controlled by the system showing over the soil moisture contents except 40% treatment. EC was gradually decreased by increasing cultivation days. On applying this system to control soil moisture, the growth and development characters of the bellflower were improved compared with control, cultivation without the automatic irrigation. Of the growth and development characters, plant height with water treatments was higher than that of control in 1st-year plants. Moreover, numbers of branch were increased by the increased soil moisture on farmland and pot condition. Capsule numbers for seed were best at 20%, 30% soil moisture treatment in 1st-year plants, and 20% to 50% treatment in 2nd-year plants. The construction of automatic soil moisture control system provide fundamental data for plant growth and development on open farmland soil condition.

The Effects of Artificial Light Sources on Lettuce Seedling Vigor and Growth

  • Hyeon-Do Kim;Yeon-Ju Choi;Eun-Young Bae;Byoung-Il Je;Jum-Soon Kang
    • 한국환경과학회지
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    • 제33권5호
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    • pp.305-322
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    • 2024
  • The aim of this study was to investigate the effects of artificial light sources on the germination and seedling vigor of lettuce, aiming to identify the optimal artificial light source for producing high-quality seedlings. Lettuce cultivar of 'Tomalin' and 'Seonpunggold' exhibited the highest seed emergence in the Metal halide(MH) lamp and High-pressure sodium(HPS) lamp treatment group, while the emergence rate parameter, T50, was the fastest in the HPS lamp treatment group. Both cultivars showed good growth characteristics such as number of leaves, root length, and stem diameter under RGB-LED, and their seedling vigor was excellent as well. The plant height was smallest in the Red + Green + Blue LED treatment, but the leaves were round and thick, resulting in higher biomass and dry weight. Single light sources of Red LED and Blue LED led to reduced growth compared with that under the mixed light treatments. Chlorophyll content in lettuce varied with the type of artificial light, with both cultivars exhibiting the highest chlorophyll content in the Red + Green + Blue LED treatment. The most suitable artificial light for lettuce seedling growth was the Red + Green + Blue LED treatment.

광질에 따른 콩나물의 생장 (Effect of Light Quality During Imbibition and Culture on Growth of Soybean Sprout)

  • 강진호;박아정;전병삼;윤수영;이상우
    • 한국작물학회지
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    • 제47권6호
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    • pp.427-431
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    • 2002
  • 콩나물의 내수규모는 아주 크면서도 실용적인 기술개발은 미진한 실정이다. 본 시험에서는 24시간의 침종 및 6일간의 재배중 가하여지는 광질처리가 콩나물의 발아, 세근발생 및 생장에 미치는 영향을 구명하고자 침종기간에는 청색광과 적색광을, 재배기간에는 청색광, 적색광, 초적색광 및 암 처리를 가하면서 콩나물을 재배한 결과를 요약하면 다음과 같다. 1. 침종시 가하여지는 적색광과 청색광 처리는 재배중 가하여지는 광질처리에 관계없이 세근이 전혀 발생되지 않았다. 2. 침종시 가하여지는 적색광과 청색광 처리는 하배축 길이가 상품으로 출하 가능한 4cm이상의 비율이 비슷한 것으로 조사되었다. 3. 콩나물 자엽의 녹화는 적색광과 청색광은 50분, 초적색광은 300분이 소요되었으나 재배기간중 매일 이러한 범위 내에 처리할 경우 콩나물의 생장에는 영향이 없는 것으로 나타났다. 4. 재배기간중 가하여지는 여타 광질처리에 비하여 초적색광 처리에서 하배축 길이가 7cm이상인 개체의 비율은 가장 낮은 반면, 미발아 종자의 비율은 가장 높았다 5. 재배기간중 가하여지는 적색광과 초적색광 처리는 청색광과 암 처리보다 하배축을 신장을 억제시킴과 동시에 굵게하는 것으로 조사되었다.

화학약품과 저온처리가 작물근단세포의 Metaphase 출현빈도에 미치는 영향 (The effect of chemicals and chilling treatments on the frequency of metaphase in root tips of some economic crops)

  • 허문회;김혜영
    • 한국작물학회지
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    • 제2권
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    • pp.3-9
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    • 1964
  • 소맥, 대두, 면화 및 대맥의 근단에 대하여 저온($0^{\circ}C$~2$^{\circ}C$에 24 또는 12시간) 8-Hydroxyquinolin (0.03과 0.1%에서 2시간 또는 10시간) 및 Colchicine(0.2%와 1.0%에서 2 또는 10시간) 처리를 하고 mitotic cell의 수와 이에 대한 meitaphase의 출현빈도를 검토하였다. 1 저온처리는 모든 작물에 대하여 mitotic cell의 수와 metaphase의 출현빈도를 현저히 증가시켰다. 저온의 정도와 처리시간은 작위에 따라 달라 본시험에서는 소맥을 제외한 타작물에서는 최적온도와 시간은 시험된 시간보다도 짧은 범위 이내에 있는 것으로 생각된다. 2. 8-Hydroxyquinolin의 효과도 작물에 따라 다르나 0.03% 2시간 정도의 처리에서는 대체로 metaphase의 빈도를 증가시키나 mitotic cell의 수를 감소시키는 경향이 있다. 3. Colchicine은 mitotic cell의 증가 및 metaphase 빈도 증가에 항상 유효하였으며 이용에 있어서는 타처리에 비하여 같거나 우수하였다. 4. 본 시험에서의 각종 처리는 염색체를 수축시켰는데 그 정도가 가장 심한 것은 Colchicine이었고 그 다음이 8-Hydroxyquinolin 및 저온처리의 순이었다. 5. 재료에 따라 적당한 온도와 처리시간이 검토된다면 저온처리가 유효하게 적용될 수 있는 가능성이 논의되었다.

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오일과 토코페롤 급여가 돈육의 이화학적 성질에 미치는 영향 (Effects of Feeding Dietary Different Oil and Tocopherol on Physico-Chemical Characteristics of Pork)

  • 진상근;김일석;송영민;정기화;이성대;하경희;김회윤;박기훈
    • 한국축산식품학회지
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    • 제23권2호
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    • pp.115-121
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    • 2003
  • 우지가 5% 첨가되어 있는 일반적인 비육후기사료를 급여한 돈육(C), 우지 3%에 들깨유 2%를 대체 급여한 돈육(T1), T1에 비타민 E를 250 ppm 첨가한 돈육(T2), 우지 3%에 오징어유 2%를 대체 급여한 돈육(T3), T3에 비타민 E를 첨가 급여한 돈육(T4), 우지 3%에 CLA 2%를 우지 대체 급여한 돈육(T5)의 이화학적 품질특성에 미치는 영향을 조사한 결과는 다음과 같다. 오일만 급여한 처리구들간(C, T1, T3, T5)에 근절길이, 염용성 및 총단백질의 함량은 T1이 다른 세 처리구들보다 낮았으며, 동일한 오일 급여구에서 비타민 첨가구들(T2, T4)이 첨가하지 않은 처리구들(T1, T3)보다 염용성 및 총단백질의 함량은 높게 나타났다. pH및 보수성의 경우 대조구가 다른 세 처리구들(T1, T3, T5)보다 높았으며, 비타민 첨가한 처리구들이 첨가하지 않은 처리구들보다 보수성은 높게 나타났다. 오일간에 육색의 L값과 지방색의 a값의 경우 T5가 다른 세 처리구들(C, T1, T3)보다 높게 나타났다. 신선육의 경도, 부착성, 점착성의 경우 T5가 다른 세 처리구들(C, T1, T3)보다 높게 나타났다. 오일간에 가열육의 부착성의 경우 T3가, 탄력성은 T5가 다른 세 처리구들보다 높게 나타났으며, 비타민 첨가에 따라 경도는 T3가 T4보다 높은 반면 응집력과 탄력성은 반대로 낮게 나타났다.

PEG의 종자침적처리(種子浸漬處理)가 고추의 발아(發芽) 및 출아촉진(出芽促進)에 미치는 영향(影響) (Hastening Germination and Emergence of Red Pepper by PEG Seed Treatment)

  • 변종영;김영래
    • 농업과학연구
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    • 제12권1호
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    • pp.17-21
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    • 1985
  • 고추종자(種子)의 발아(發芽)와 출아기간(出芽期間)을 단축(短縮)시키고자 PEG 6000(polyethylene glycol 6000) 20, 25, 30% 용액(溶液)에 공시품종(供試品種)인 새로나와 킹건고추종자(種子)를 6일(日)과 12일간(日間) 침지처리(浸漬處理)하여 고추종자(種子)의 발아(發芽)와 출아촉진(出芽促進)에 미치는 효과(效果)를 조사(調査)하였다. 1. 새로나와 킹건고추는 PEG 20%와 25% 용액(溶液)에 12일간(日間) 종자(種子)를 침지(浸漬)하므로써 발아속도(發芽速度)가 촉진(促進)되었으며 최종발아율(最終發芽率)은 처리간(處理間)에 큰 차이(差異)를 인정(認定)할 수 없었다. 2. PEG 용액(溶液)에 침지(浸漬)한 종자(種子)를 건조(乾操)한 다음 파종(播種)한 경우 PEG 25% 용액(溶液)에 12일간(日間) 침지(浸漬)하므로써 새로나품종(品種)은 약(約)5일(日), 킹건고추는 약(約)4일(日)씩 출아속도(出芽速度)가 촉진(促進)되었다. PEG 처리(處理)에 따른 최종출아율(最終出芽率)은 새로나품종(品種)에서 증가(增加)된 반면 킹건고추에서는 처리간(處理間)에 차이(差異)가 인정(認定)되지 않았다. 3. 따라서 고추종자9種子)를 PEG20, 25% 용액(溶液)에 6일(日) 또는 12일간(日間) 침지처리(浸漬處理)한 후(後) 파종(播種)하므로써 불량(不良)한 저온환경조건(低溫環境條件)에서도 발아(發芽) 및 출아속도(出芽速度)를 촉진(促進)시킬 수 있을 것으로 사료(思料)된다.

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