• 제목/요약/키워드: Gibberellic acid($GA_3$)

검색결과 104건 처리시간 0.023초

생장조절제(生長調節劑)가 다년생잡초(多年生雜草) 너도방동사니(Cyperus serotinus Rottb.) 괴경형성(塊莖形成)에 미치는 영향(影響) (Effects of Growth Regulators on the Tuberization of Perennial Weed, Cyperus serotinus Rottb.)

  • 김건우;김길웅
    • 한국잡초학회지
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    • 제6권1호
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    • pp.18-24
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    • 1986
  • 생장조절제(生長調節劑)가 너도방동사니의 생육(生育) 및 괴경형성(塊莖形成)에 미치는 영향(影響)과 경엽절단(莖葉切斷)의 효과(效果)를 구명하여 얻어진 결과(結果)는 다음과 같다. 1. BA의 경엽처리시(莖葉處理時) 너도방동사니의 괴경수(塊莖數)와 괴경(塊莖)의 생체중(生體重)은 무처리(無處理)에 비(比)해서 각각(各各), 평균(平均) 24,7%와 32.4%로 현저(顯著)히 증가(增加)했으나 ABA 및 GA를 단독(單獨) 처리(處理)한 경우(境遇), 대체(大體)로 억제(抑制)되는 경향(傾向)이었다. 2. BA $10^{-4}$M 처리(處理)와 BA $10^{-5}$M과 GA $10^{-5}$M의 혼합처리(混合處理)에서 괴경수(塊莖數)는 무처리(無處理)에 비(比)해 각각(各各), 31.8%와 53.7%로 증가(增加)했으나 GA $10^{-5}$M 처리(處理)에서는 21.9%의 감소(減少)를 보였다. 3. 질소수준별(窒素水準別) BA의 처리효과(處理效果)를 보면, 질소시용(窒素施用)이 15kg/10a 수준(水準)에서 괴경수(塊莖數)는 BA의 농도(濃度)를 평균(平均)하여 무처리(無處理)보다 24.7% 증가(增加)되었다. 4. 생장조절제(生長調節劑)가 너동방동사니의 개화(開花)에 미치는 영향(影響)을 보면, GA 처리구(無處理區)만이 무처리구(無處理區)보다 평균(平均) 4.8% 증가(增加)를 나타냈다. 5. 절단회수(切斷回數)의 증가(增加)는 너도방동사니의 괴경수(塊莖數) 및 괴경(塊莖)의 생체중(生體中)을 현저(顯著)히 감소(減少)시켰으며 3회(回) 절단(切斷)의 경우(境遇), 질소수준(窒素水準) 15kg/10a에서 괴경수(塊莖數)는 무처리(無處理)보다 76.1% 감소(減少)되었다.

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Seed Germination Response to Temperature, Cold Stratification Period, and Gibberellin Treatment in Spiraea fritschiana

  • Kim, Hyun Jin;Lee, Ki Cheol;Kim, Hyun Jin;Kim, Yoon Jin
    • 원예과학기술지
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    • 제34권4호
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    • pp.557-563
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    • 2016
  • To improve the germination of Spiraea fritschiana seeds for mass propagation, we evaluated the effect of a range of temperatures, cold stratification periods, and gibberellic acid ($GA_3$) treatments on three germination characteristics. Final germination percentage (FGP) increased as the temperature for seed germination increased, up to $30^{\circ}C$, while the mean germination time (MGT) and the mean number of days to 30% germination ($T_{30}$) decreased when seeds were germinated at $25-30^{\circ}C$. The optimum germination temperature of S. fritschiana seeds is approximately $30^{\circ}C$ considering FGP, MGT, and $T_{30}$ together. FGP increased with the duration of cold stratification up to a period of 6 weeks, but declined after 8 weeks of cold stratification, as prolonged cold stratification can induce dormancy with a resultant decline in germination. Pretreatment with 6-8 weeks of cold stratification or soaking seeds in distilled water or $500mg{\cdot}L^{-1}$ $GA_3$ for 24 h accelerated and increased the germination of S. fritschiana seeds, regardless of temperature. However, further study might be required to evaluate the effect of $GA_3$ concentrations lower than $500mg{\cdot}L^{-1}$ on the promotion of germination in S. fritschiana seeds.

배초향 종자처리가 발아성 향상에 미치는 영향 (Effect of Seed Treatment on Improved Germinability of Agastache rugosa O. Kuntze)

  • 주형규;이정은;강점순
    • 한국환경과학회지
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    • 제30권1호
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    • pp.77-85
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    • 2021
  • This study was carried out to establish optimal conditions for breaking dormancy of Agastache rugosa O. Kuntze seeds. A series of experiments according to seed maturity and treatment with plant growth regulators were performed to improve germination percentage and synchronize germination of the seeds. In addition, it was conducted to test whether the useful effect of seed treatment before sowing leads to healthy seedling and early vigorous growth. The average seed size was 1.85 mm (length) × 0.82 mm(width). The seed size was much smaller than other vegetable seeds. Seeds colorappeared dark brown, the shape of the seeds was oval and the weight of 1,000seeds was 352.8 mg. The optimum germination temperature was 22℃. Light exposure during germination did not affect germination promotion, suggesting that A. rugosa seeds are a kind of dark germinating seeds. Seed dormancy lasted for 40 days after harvesting, and GA3 treatment of dormant seeds could break dormancy. There were significant differences in germination percentage and rate according to the maturity of seeds. The germination percentage of mature seeds was 10 - 18% higher than that of immature seeds, and germination rate was 2 days faster. GA3 treatment during growth regulator treatment improved germinability, but BAP or ethephone treatment did not. The optimal growth regulator concentration of for germination was the combination treatment of 100 mM GA3 + 100 mM BAP.

늘어진장대(Arabis pendula L.) 종자의 형태적 특성 및 발아조건 (Morphological Characteristics and Germination Conditions of Seeds in Arabis pendula L.)

  • 신소림;임윤경;권혁준;김유리;김수영
    • 한국자원식물학회지
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    • 제30권1호
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    • pp.50-57
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    • 2017
  • 본 연구는 식의약소재로 활용 가치가 높은 늘어진장대(Arabis pendula L.)의 대량증식을 위한 기초연구로 종자의 형태적 특성과 발아특성을 규명하고, 최적 발아조건을 규명하고자 수행되었다. 늘어진장대 종자는 종피에 날개가 있는 원형으로 색은 진갈색이며, 너비 1.47 mm, 길이 1.25 mm이고, 배는 굴곡형이며 무배유종자이다. 온도와 광조건 실험에서, 종자 발아는 $20^{\circ}C$, 암조건에서 가장 우수하였다(49.7%). 그러나 암조건에서는 유묘가 약하고 웃자랐으며, 자엽이 작고 말려있는 특징을 보였다. 종자 발아와 유묘의 생육을 촉진하기 위하여 종자를 다양한 농도의 $GA_3$ 희석액(0, 200, 500, 1,000 mg/L)에 침지하여 전처리 한 후 파종하였다. 연구 결과, $GA_3$ 희석액 500 mg/L처리구에서 종자 발아율이 가장 높고(97.3%), 발아 소요기간이 짧았으며(8.1일), 유묘의 생육 또한 왕성하였다. 연구의 결과, 늘어진장대 종자의 최적 발아조건은 $GA_3$ 500 mg/L희석액에 침지처리($4^{\circ}C$, dark, 24시간)하여 $20^{\circ}C$에 파종하여 15일 동안 발아시키는 것으로 확인되었다.

Tissue-cultured regeneration and ecological values in major bamboo species

  • Sharma, Avinash;Manpoong, Chowlani;Gohain, Anwesha;Pandey, Himanshu;Padu, Gompi;Aku, Hage
    • Journal of Ecology and Environment
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    • 제46권3호
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    • pp.218-242
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    • 2022
  • Background: Promising specific growth regulators are employed in the tissue cultures of various bamboo species. Specific natural hardening mixtures support the acclimatization and adaptation of bamboo under protected cultivation. Results: The growth regulators like 2, 4-Dichlorophenoxyacetic acid (2, 4-D), Naphthaleneacetic Acid (NAA), Thidiazuron (TDZ), 6-Benzylaminopurine (BAP), Kinetin, Gelrite, Benzyl Adenine (BA), Indole Butyric Acid (IBA), Coumarin, Putrescine, Gibberellic acid (GA3), Indole Acetic Acid (IAA) has been widely used for callus induction, root regeneration and imposing plant regeneration in various species of bamboo such as Bambusa spp. and Dendrocalamus spp. Different combinations of growth regulators and phytohormones have been used for regenerating some of the major bamboo species. Natural hardening materials such as cocopeat, vermicompost, perlite, cow dung, farmyard manure, compost, soil, garden soil, and humus soil have been recommended for the acclimatization and adaptation of bamboo species. Standard combinations of growth regulators and hardening mixtures have imposed tissue culture, acclimatization, and adaptation in major bamboo species. Conclusions: Bamboo contributes to soil fertility improvement and stabilization of the environment. Bamboo species are also involved in managing the biogeochemical cycle and have immense potential for carbon sequestration and human use. This paper aims to review the various growth regulators, natural mixtures, and defined media involved in regenerating major bamboo species through in vitro propagation. In addition, the ecological benefits of safeguarding the environment are also briefly discussed.

온도(溫度)와 생장조절물질(生長調節物質)이 무궁화(Hibiscus syriacus ''Honghwarang') 삽수의 맹아(萌芽)에 미치는 영향 (Effects of Temperature and Plant Growth Regulators on Bud Sprouting of Stem Cutting of Hibiscus syriacus 'Honghwarang')

  • 백이화;조근호;박천호;허무룡;곽병화
    • 원예과학기술지
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    • 제16권3호
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    • pp.355-357
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    • 1998
  • 무궁화 (Hibiscus syriacus 'Honghwarang')의 휴면특성을 구명하고자 온도와 생장조절물질을 처리하여 맹아(萌芽) 차이를 비교하였다. 맹아는 온도가 높을수록 빨랐으며($10{\sim}30^{\circ}C$), $30^{\circ}C$ 무처리구는 삽목 후 4일만에 맹아하기 시작하여 6일경에는 100% 맹아했다. GA와 BA처리도 대조구인 무처리와 큰 차이 없이 $20^{\circ}C$ 이상의 온도에서는 6일만에 맹아하여 62.5%의 높은 맹아율을 나타내었다. ABA 침지처리는 $25^{\circ}C$이하의 온도에서는 맹아율이 저조하였으나, $25^{\circ}C$이상의 온도에서는 삽목 6일 후에 맹아하기 시작하여 12일 후에 93% 맹아되어, 고온 조건에서는 생장억제제인 ABA처리가 맹아억제에 전혀 효과가 없었다.

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High-frequency shoot regeneration from leaf explants through organogenesis in bitter melon (Momordica charantia L.)

  • Thiruvengadam, Muthu;Rekha, K.T.;Yang, Chang-Hsien;Jayabalan, Narayanasamypillai;Chung, Ill-Min
    • Plant Biotechnology Reports
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    • 제4권4호
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    • pp.321-328
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    • 2010
  • An efficient protocol for in vitro organogenesis was achieved from callus-derived immature and mature leaf explants of Momordica charantia, a very important vegetable and medicinal plant. Calluses were induced from immature leaf explants excised from in vitro (15-day-old seedlings) mature leaf explants of vivo plants (45 days old). The explants were grown on Murashige and Skoog (MS) medium with Gamborg (B5) vitamins containing 30 g $1^{-1}$ sucrose, 2.2 g $1^{-1}$ Gelrite, and 7.7 lM naphthalene acetic acid (NAA) with 2.2 ${\mu}M$ thidiazuron (TDZ). Regeneration of adventitious shoots from callus (30-40 shoots per explant) was achieved on MS medium containing 5.5 ${\mu}M$ TDZ, 2.2 ${\mu}M$ NAA, and 3.3 ${\mu}M$ silver nitrate ($AgNO_3$). The shoots (1.0 cm length) were excised from callus and elongated in MS medium fortified with 3.5 ${\mu}M$ gibberellic acid ($GA_3$). The elongated shoots were rooted in MS medium supplemented with 4.0 ${\mu}M$ indole 3-butyric acid (IBA). Rooted plants were acclimatized in the greenhouse and subsequently established in soil with a survival rate of 90%. This protocol yielded an average of 40 plants per leaf explant with a culture period of 98 days.

Effect of plant growth regulators and antioxidants on in vitro plant regeneration and callus induction from leaf explants of purple passion fruit (Passiflora edulis Sims)

  • Huh, Yoon Sun;Lee, Joung Kwan;Nam, Sang Young
    • Journal of Plant Biotechnology
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    • 제44권3호
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    • pp.335-342
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    • 2017
  • Purple passion fruit (Passiflora edulis Sims) is one of the introduced tropical plants, an increasing interest has arisen due to its distinctive taste and attractive flavor. It is expected that passion fruit production and planted area will increase gradually in the years ahead because of high profitability and consumer's demands of healthful ingredients. So we tried to investigate the effect of plant growth regulators and antioxidants on in vitro plant regeneration and callus induction from leaf explants of passion fruit for an establishment of optimal mass propagation system. Young leaf explants of purple passion fruit were cultured in Murashige and Skoog (MS) medium containing different growth regulators and antioxidant additives to induce the shoot organogenesis. After 8 weeks, the highest embryogenic callus formation rate was obtained in MS medium supplemented with $1mg{\cdot}L^{-1}$ 6-benzylaminopurine (BAP) and $2mg{\cdot}L^{-1}$ 2,4-dichlorophenoxyacetic acid (2,4-D), furthermore, the shoot development via organogenesis was also observed. Silver nitrate ($AgNO_3$), which was added into the medium to minimize the adverse effects of leached phenolics, was effective for reduction of medium browning and sudden explant death. In the medium supplemented with $1mg{\cdot}L^{-1}$ BAP and $1mg{\cdot}L^{-1}$ gibberellic acid ($GA_3$), shoots were most vigorously regenerated and elongated. Most shoots rooted successfully in half strength medium with $1mg{\cdot}L^{-1}$ indol-3 acetic acid (IAA), and more than 90% of plantlets survived after 4-month acclimatization period.

액아배양을 통한 야생 백하수오(Cynanchum wilfordii)의 기내증식 (In Vitro Propagation of Wild Cynanchum wilfordii Through Axillary Bud Culture)

  • 이수광;이송희;강호덕
    • 한국산림과학회지
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    • 제100권2호
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    • pp.172-177
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    • 2011
  • 본 연구는 야생 백하수오를 대상으로 기내증식의 최적 조건을 구명하기 위해 수행되었다. 기내 종자발아를 위하여 야생 백하수오 종자를 $GA_{3}$ 용액(100 ppm)에 24시간 침지처리 후 1.0 mg/L BA가 첨가된 WPM 배지에 치상하였을 때 91.6%의 발아율을 보였다. 신초 증식은 1.0 mg/L $GA_{3}$가 첨가된 배지에서 최대 5.2 cm까지 신초가 신장하였으나 비정상적으로 생장하여 결국 고사하였고, 신초를 0.1 mg/L BA가 첨가된 배지에 치상 4 주 후 2.4개의 신초를 획득하였다. 발근은 식물생장조절제(Plant Growth Regulators, PGRs)를 첨가하지 않은 환기처리 배지에 치상하였을 때 3개의 뿌리가 분화되었고, 0.1 mg/L NAA가 첨가된 환기처리 배지에 치상하였을 때 2 cm로 가장 높게 유도되었다. 기외이식 후 생존율은 기내에서 환기 전처리한 개체군이 70%로 가장 높게 나타났다.

지베렐린이 '신고'배의 비대와 성숙촉진에 미치는 영향 (Effect of the Gibberellin Treatment on Enlargement and Mature Promotion in 'Niitaka' Pear (Pyrus pyryfolia L.))

  • 김종국;이창후
    • 농업생명과학연구
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    • 제43권2호
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    • pp.23-30
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    • 2009
  • 본 실험은 지베렐린이 '신고'배 숙기와 비대에 미치는 영향을 조사하기 위하여 실시되었다. 과실중 조사에서 모든 Gibberellic acid $A_{4+7}$ 처리구는 대조구인 지베렐린 도포제와 비등한 약효가 나타났으며, 무처리구에 비해서는 증가를 나타내었다. 횡경은 $GA_{4+7}$을 만개후 35일째에 도포한 것이, 종경은 만개후 40일째 도포한 것이 가장 효과적인 것으로 나타났으며, 과형지수는 모든 처리구에서 비슷한 수치로 나타났다. '신고'배 발달 초기에는 $GA_{4+7}$ 2.4% 처리구가 $GA_{3}+GA_{4+7}$ 2.7% 처리구나 무처리구보다 현저하게 큰 차이로 비대가 되는 것을 볼 수가 있으나, 성숙기에 들어서면 $GA_{4+7}$ 2.4% 처리구와 $GA_{3}+GA_{4+7}$ 2.7% 처리구의 크기와 가시적인 착색도가 거의 비슷해지는 것을 볼 수 있었다. $GA_{3}+GA_{4+7}$의 성숙촉진 효과를 검토하기 위하여 에테폰 액제와 비교하여 실험한 결과, $GA_{3}+GA_{4+7}$를 만개후 35일째에 어린 과실에 도포한 것이 에테폰과 비슷한 정도로 착색이 되었으며, 무처리구와 비교했을 때에는 모든 $GA_{3}+GA_{4+7}$ 처리구와 에테폰 처리 모두 착색이 6일정도 빨라 착색 속도에 현저한 차이를 보여주었다. 모든 $GA_{3}+GA_{4+7}$ 처리구는 무처리구에 비하여 당도는 증가하고 산도는 감소하였으며, 과실의 경도는 무처리구보다 낮은 것으로 나타났으나 유의한 차이는 없었다. 상기의 결과로 $GA_{3}+GA_{4+7}$ 처리구 모두가 에테폰이나 무처리구보다 과실의 비대에 있어 효과가 큰 것으로 나타났다. 특히 $GA_{3}+GA_{4+7}$를 만개후 35일째에 처리한 것이 횡경 및 종경, 과형지수 모두 가장 높게 나타났으며 착색 또한 깔끔하게 되어 상품성이 높게 평가되었다.