• 한국유기농업학회지
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• 제18권1호
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• pp.55-62
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• 2010

'신고' 배 실생묘의 수체 생육 특성에 관한 결과를 통해서, 충분히 부숙된 유기질 비료의 시용은 뿌리 생체중 및 세근의 양이 많아지고 근 활력이 높아졌을 뿐만 아니라 지상부 수체 생육이 좋아지는 효과를 나타냈다. 과원 내 유목묘의 궁극적인 목적은 왕성한 수체 생장으로 과실 생산을 조기에 달성하는 것인데, 본 실험 결과를 통해서 유기질 비료 처리로 초기 과원재배의 궁극적인 목적을 어느 정도 이룰 수 있을 것으로 판단된다. 또한, 건강한 수체 생산으로 응애의 피해에 의한 낙엽률이나 엽 피해도를 감소시키는 결과를 가져와서 병충해에 대한 내성을 제고함을 알 수 있었다. 따라서 토양 내 충분히 부숙된 유기질 복합 퇴비 시용은 빠른 시일 내에 수체 생장과 안정성을 확보할 수 있다는 측면으로, 육묘장이나 기타 과수 실생묘에 이용될 수 있을 것으로 판단된다

• 한국약용작물학회지
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• 제23권5호
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• pp.351-356
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• 2015

Background : Ginseng is mainly grown as a break crop in paddy fields after rice has been cultured for approximately 4 - 5 years, because it reduces the negative effects of continuous rice cropping. However, physiological disorders, such as leaf discoloration, occur in ginseng grown in paddy fields with poor drainage and excessive levels of inorganic components. Methods and Results : This study investigated the effect of ridge height on the growth characteristics and yield of 6 year old Panax ginseng. Ridge height was varied by making 20, 30, and 40 cm high ridges in a pooly drained paddy field. Soil moisture content decreased, while electrical conductivity (EC) as the ridge height increased. The $NO_3$, K, Ca, Mg, and Na levels also rose as ridge height increased, but organic matter and $P_2O_4$ levels did not. The leaf discoloration ratio rose as the ridge height increased, and root yield reached a peak when the ridge height was 30 cm. Conclusion : A ridge height of 30 cm in poorly drained paddy field improved ginseng growth by reducing leaf discoloration and increasing root survival, owing to more suitable soil moisture and EC levels.

• Journal of Plant Biotechnology
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• 제50권
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• pp.137-141
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• 2023

잔대(Adenophora triphylla var. japonica)의 뿌리는 비만, 암, 염증을 예방하는 데 사용되는 귀중한 약용 자원으로 사용되지만, 어린잎이나 순은 식재료로 사용되고 있다. 본 연구에서는 A. triphylla 뿌리와 잎에서 얻은 70% 에탄올 추출물의 항산화 및 항암 효과를 비교 평가하였다. 잎 추출물이 뿌리 추출물보다 강력한 DPPH-radical 소거 활성, 환원력 및 ORAC 값을 나타냈다. 또한, 인체 암세포주에서 잔대 추출물의 세포독성 사멸 효과를 조사한 결과, 잎 추출물이 A549 (폐암), LNcaP (전립선암), SKOV3 (난소암) 및 Caco-2 (대장암) 세포에서 강력한 항암 성분의 공급원임을 보여주었다. 이러한 결과는 뿌리뿐만 아니라 잎도 제약 산업에서 기능성 소재의 귀중한 공급원이 될 수 있음을 시사한다.

• 한국작물학회지
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• 제32권4호
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• pp.447-454
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• 1987

본 연구는 생태적, 생리적 특성이 다른 콩5품종, 즉 조숙성의 예계 7003, SS79168 및 만숙성의 동북 7006, 백운콩, 장백콩을 공시하여 등숙기간중 영양영리학적인 관점에서 근과 근류의 당함량과 질소고정활성과의 관련성을 해명하기 위하여 Acetylene 환원능 (ARA ) 등을 조사하였다. 기히 공시품종중 예계 7003는 노화가 지연되는 특성(delayed leaf sen-escence, DLS )을 갖는 품종이다. 본보에서는 얻어진 결과중 근 및 근류 당의 경시적 변동과 질소고정활성과의 관계를 보고하며 이를 요약하면 다음과 같다. 1. 조숙성 품종에서의 근중 환원당 농도는 $R_{7}$까지 변화 없이 경과하다가 다소 상승하는 경향이 인정되었다. 만숙성 품종에서는 $R_{6}$ 까지 상승하고, 그 후 급등히 저하하였다. 근의 비환원당 농도는 DLS 의 예계7003 이외 품종에서는 $R_{6}$ 까지 큰 변화가 없었고, 그 후 급속히 감소하였으나 엽신의 황화가 지연된 예계7003에서는 그 저하가 인정되지 아니하였다. 2. 근류의 환원당 농도는 품종의 조만성에 관계없이 $R_{6}$ 까지 커다란 변화는 없었고, 그 직후 질소고정활성의 급격한 저하가 나타난 $R_{6.5}$ 에서 일시적으로 상승하였다. 이것은 질소고정활성이 에너지원(당)의 공급조건에 의하여 규제될 뿐만 아니라, 고정질소에 대한 요구성에 의하여도 좌우되기 때문에 생긴 현상이라고 판단된다. 근류의 비환원당농도는 어느 품종에서도 $R_{6}$ ~ $R_{6.5}$ 까지는 상승 경향을 보인 후 $R_{7}$ 에서 저하하고 있어 환원당에서와 같은 추론이 가능하다.

• International Journal of Industrial Entomology and Biomaterials
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• 제15권2호
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• pp.101-106
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• 2007

During mulberry cultivation, root disease complex caused by the association of root knot nematode (Meloidogyne incognita) with root rot pathogens like Fusarium solani and Botryodiplodia theobromae poses serious loss in leaf production. Therefore, an attempt was made to assess the efficacy of eight pesticides (Metayalaxyl+Mancozeb, Thiophanate methyl, Mancozeb, Bitertanol, Phenomiphos, Phorate, Thionazin & Carbofuran) and two growth hormones (Salicylic acid and Indole 3 acetic acid) at 0.1 and 0.2% concentrations under in vitro conditions against nematode (hatching of eggs and mortality of larvae) and root rot pathogens (poisoned food technique) for short listing the treatments to develop an IDM strategy. Results revealed that among the pesticides and growth hormones, Carbofuran followed by Salicylic acid were found to be effective at 0.2% concentration against both nematode and pathogenic fungi. Both the chemicals inhibited the hatching of nematode eggs by 83.5-78.9% and 80-76% larval mortality over the control and reduced the mycelial growth of both the pathogenic fungi to an extent of 75.5-77.8%. Though Mancozeb inhibited both the pathogenic fungi strongly (77-80%), it did not show any effectiveness against nematode. The rest of the chemicals were found either moderately or poorly effective in reducing the growth of pathogenic fungi, hatching of nematode eggs and enhancing the mortality of larvae. The two effective chemicals viz., Carbofuran and Salicylic acid, which rated as strong inhibitors against both nematode and pathogenic fungi, can be exploited in developing an IDM package as one of the component for better management of root disease complex in mulberry.

• Plant Resources
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• 제6권3호
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• pp.211-214
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• 2003

This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials and polyethylene(PE) tunnel. Soil temperature by covering treatment was higher in PE mulching and PE tunnel than in rice straw mulching, especially showing the highest temperature in PE tunnel from April through May. Water content of soil was higher in PE mulching than in non-mulching. Leaf production of Angelica acutiloba through year-round production showed the highest in PE tunnel and root production in PE mulching. These results suggest that leaf production of Angelica acutiloba can be maximized through PE tunnel cultivation system.

• Plant Resources
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• 제8권1호
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• pp.27-31
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• 2005

This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials. Soil temperature by covering treatment was the highest in P.E.(Polyethylene Film) mulching and followed by rice straw mulching, especially showing highest temperature in Tr. PE(Transparent Polyethylene Film) from April through May. Water content of soil was higher in P.E. mulching than in non-mulching. Leaf and stem production of Angelica acutiloba through year-round production showed the highest in PE mulching also root production of Angelica acutiloba showed the highest in P.E. mulching. These results suggest that leaf and stem production of Angelica acutiloba can be maximized through P.E. mulching cultivation system.

• 한국작물학회지
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• 제51권3호
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• pp.215-219
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• 2006

작약의 이용성을 높이기 위해 작약의 종 및 품종, 생육시기, 식물체 부위별 성분의 함량 분포와 변화를 HPLC를 이 용하여 분석한 결과를 요약하면 다음과 같다. 작약의 종 및 품종간 성분의 함량 분포는 야생작약(P. japonica M., P. obovata M., P. anomala L.) 보다는 재배작약(태백작약, 의성작약)에서 전반적으로 함량이 더 높았고, 성분별 분포는 paeonifloin, methyl gallate, astragalin, kaempferol 순으로 높았으며 methyl gallate 는 의성작약에서 0.45%로 가장 높았다. 식물체 부위별 함량 분포는 methyl gallate는 꽃잎에서 1.79%로 가장 높았으며 잎에는 0.56% 함유하였고, 뿌리에는 0.01%로서 소량 분포하였다. Astragalin 은 꽃잎과 잎에서 높았고, 작약의 지표 성분인 paeoniflorin 은 뿌리에서 2.52%로 가장 높았으며 잎에도 1.09%나 함유하여 이용 가치가 매우 높다고 사료된다. 생육시기별 함량 분포는 생육초기인 4월에 가장 높았고 생육 후기로 갈수록 감소하는 경향이므로 잎과 줄기를 이용하려면 뿌리 수확직전인 $8{\sim}9$월이 적기라고 생각된다.

• 한국식물병리학회지
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• 제11권1호
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• pp.94-97
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• 1995

In 1994, an abnormal rice growth was observed in a 0.5-ha scale farmer's field located at Chogye-Myeon, Hapcheon-Gun, Gyeongnam Province where rice cv. Hwayeongbyeo was seeded directly in dry paddy field conditions. The major symptoms were less stands per acreage, short leaf length, and hypertrophy of root tip portion. The disorder was identified as rice seeding bight caused by Rhizopus sp. The average plant stand per m2 in the infested field was 108, while it was 375 in the normal field, and leaf growth was retarded to less than one-third of healthy plant. The average leaf lengths of infected and healthy seedlings were 12.8cm and 38.9cm, respectively. When the infected seedlings were transplanted to pots, flooded-soil conditions developed no new root growth but upland conditions allowed 11.2 new roots emerging. The length of newly emerged root in infested soil was 5.3cm in upland and 7.1cm in intermediate flooding conditions. However, it was 10.9cm in non-infested soil with intermediate flooding conditions. When the plants were matured, the stem length of infected plants was reduced slightly as compared to normal plants, whereas the length of panicle was not significantly different between infected and healthy plants. The number of panicle per plant, however, greatly different with variation of infection degree. Grain quality such as the number of complete and incomplete grains per panicle, the complete grain weight per panicle, and the weight of 1000 grains was not significantly different.

• Journal of Plant Biotechnology
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• 제49권3호
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• pp.230-239
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• 2022

Holostemma annulare (Family Asclepiadaceae) is an invaluable vulnerable medicinal plant; the root tubers are used in Ayurveda medicine and by folk healers to treat various ailments. In this study, Schenk and Hildebrandt medium fortified with the cytokinins 6-benzyl adenine, kinetin, and auxins, including indole 3-butyric acid, indole 3-acetic acid, α-naphthaleneacetic acid, and 2,4-dichlorophenoxyacetic acid, were checked for their efficiency on root tuber induction from different explants. Adventitious root tubers were more successfully induced from in vitro leaf segments and shoots when cultured in Schenk and Hildebrandt medium supplemented with 0.5 mg/l of α-naphthaleneacetic acid. In addition, preliminary phytochemical analysis of in vitro root tubers and identification of different secondary metabolites were conducted. Thin layer chromatography and high performance thin layer chromatography analysis of the crude methanolic extracts of the in vitro root tuber identified the presence of lupeol, a bioactive triterpene. Adventitious root tuber induction offers a novel method for the in vitro production of bioactive metabolites that can be scaled up by bioreactors, thus ensuring the conservation and sustainable utilization of H. annulare. The study warrants further scale-up production and pharmacological investigation that can be extended for pharmaceutical needs.