• Korean journal of applied entomology
• /
• v.26 no.2 s.71
• /
• pp.107-111
• /
• 1987

Experiments were caried out to invesstigate the effects of seed disinfectant and the chemical control method in the paddy field for the rice white-tip nematode, Aphelenchoides besseyi. All three seed disinfectants tested, MEP 50% EC, Fenthion 50% EC, Dasuzin 34% EC showed effective control without any symptom of phytotoxicity. Mixed treatments with fungicides, Benoram 40% Wp, proraz-25% EC, TCM 30% EC also showed the effective control and no phytotoxicity. Effective chemical control methods for the rice white-tip nematode in paddy fields was seed disinfectant before seeding and Carbofuran 3% G. on the day before the transplanting, or seed disinfectatnt + Carbofuran 3% G. water surface treatment on the early stage of injury.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.6 no.5
• /
• pp.47-49
• /
• 1985

땅콩 줄무늬 바이러스(peanut stripe virus, PSV)는 땅콩의 가장 피해가 큰 병 중 하나이며, 기타 중요한 두과(대두, cowpeas, arrowhead, crimson clovers)작물에도 피해를 입힌다. 최근에 이 바이러스는 중공에서 수입한 땅콩종자 유전자원(germ plasm)에 감염되어 있다는 사실을 발견하고 미국의 식물병리학자들이 세밀한 조사시험연구를 한 결과 미국에도 이미 이 바이러스가 발생되었다고 보고하였다. 그 결과 미국 동식물검역국(Animal and Plant, Health Inspection Service)은 최근에 중공으로부터 종자용을 포함한 땅콩(Arachis species)수입을 금지하기에 이르는 등 식물검역상 중요한 문제로 대두하고 있다.

• Korean journal of applied entomology
• /
• v.21 no.1 s.50
• /
• pp.23-26
• /
• 1982

The present study was carried out to investigate the change of peroxidase activity of soybean seed infected with Cerrospora kikurhii. The protein content, polyphenol oxidase activity and peroxidase isozyme pattern in health and infected soybean seed were also compared. 1. The peroxidase activity was substantially higher in the infected soybean seeds than that in the healthy seeds either cracked or not. No significant differences in protein content were recognized among the seeds tested. 2. No significant differences in peroxidase activities and protein contents were notified between healthy and infected seeds from the measurements on each parts of dissected seeds, cotyledon and seedcoat, however the peroxidase activity in the seed coat of the stained seed was 2.5 times to healthy seed. 3. The activities of polyphenel oxidase were undectable in both healthy and diseased seeds. 4. The electrophoretic Patterns of the Peroridase isozyme were the same between healthy and in footed seed. 5. Therefore, the increase of peroxidase activity in infected soybean seedcoat was mainly due to the biochemical reaction against the pathogen.

• Korean Journal of Environment and Ecology
• /
• v.15 no.1
• /
• pp.57-68
• /
• 2001

해안지역의 녹화 및 조경용으로 유용한 내염성 식물자원임과 동시에 서식지가 급격히 감소하고 있는 순기비나무를 대상으로 하여 생장특성과 번식방법을 규명하기 위한 연구를 수행하였던 바, 그 결과를 요약하면 다음과 같다. 1. 줄기의 생장형태는 포복줄기와 직립줄기가동시에 생장하고, 5개 주요 군락지에 직립줄기의 길이는 평균 46.6cm 이고, 포복경의 초대 길이는 7.6cm에 달하였다. 2. 종작발아율은 황적색의 무처리 종자와 $GA_3$처리 종자에서 71.0~72.3%로 가장 높았으나, 두 처리군사이에는 발아율의 차이가 없었다. 종피현화를 목적으로 한 황산처리는 오히려 종자의 발아를 억제하였다. 3. 종피 색깔이 황적생인 종자는 흑갈색 종자에 비해 평균 21.1%(13~30%)발아율이 높았다. 실득모율은 30% 미만으로 아주 낮았으나 흑갈색 종자에 비해 황적색 종가자 약 2배 높았다. 또한 $LD_{50}$은 황적색 종자가 흑갈색 종자보다 10~20일 짧았다. 4. 종피 색깔과 화학처리가 같은 조건에서 기건저장한 종자와 노천매장한 종자사이에는 발아율, 식득묘율, $LD_{50}$등의 차이가 없었다. 5. 기건저장한 황적색 종자가 바다모래에서 30.3%의 발아율과 10.1%의 실득모율을 나타냈으나, 갯벌흙에서는 전혀 발아되지 않았다. 6. 삽목번식의 경우 추삽에서 발근육은 녹지삽이 가장 높았고, 다음이 반지숙삽, 숙지삽의 순이었다. 발근율이 가장 높은 것은 NAA 200ppm+sucrose 2%를 처리한 녹지로서 96.7%의 발근율을 나타내었다. 발근수는 전반적으로발근율에 비례하는 경향이었다. 7. 하삽에서 NAA 200ppm+sucrose 2%를 처리한 녹지, 반숙지, 숙지의 토양별 발근율은 vermiculite+ perlite(1:1)와 마사토에서는 81.1~87.8%로 높았고, 모래와 해상에서 48.9~77.8%로 낮았다.

• 농업기술회보
• /
• v.50 no.3
• /
• pp.18-19
• /
• 2013

친환경 농산물 수요가 급증함에 따라 녹비작물 재배가 급속히 증가하고 있지만 녹비재배용 종자는 여전히 외국에서 수입하고 있다. 이에 국립식량과학원에서는 국내 및 외국의 유전자원을 수집하여 추위에 강하고 녹비생산량이 많은 신풍종 '청풍보라'를 국내최초로 개발했다.

• 한국양묘협회지
• /
• s.37
• /
• pp.71-89
• /
• 2009

• 한국양묘협회지
• /
• s.31
• /
• pp.56-75
• /
• 2003

• Korean Journal of Plant Resources
• /
• v.9 no.3
• /
• pp.243-248
• /
• 1996

The yield and quality of black medick seeds(Medicago lupulina L.) produced from different fertilization and flowering position was investigated was investigated to develop the technology of seed vigor maintenance. Number of flowers and seeds, 100 seeds weight, yellow seed percentage, and large seed percentage were higher in seeds produced from stems than in those from branches. Increase of nitrogen resulted in a higher rate of yellow and large seeds as well as 160 seeds weight. Germination rate was the highest (56.9%) in the yellow seeds harvested from stems which were grown with a treatment of lower level of nitrogen and higher level of phosphorus. Malformed seedlings were frequently observed among the seedlings grown from seeds which were produced only with phosphorus.

• Journal of Bio-Environment Control
• /
• v.22 no.1
• /
• pp.61-64
• /
• 2013

This study was conducted to investigate the general characteristics of raw okra seeds and the functional components of roasted okra seeds. The number of okra seed per pod was 78 in 'Greensod' and 88 in 'Beny'. The weight of okra seed per pod of 'Greensod' and 'Beny' were 4.4 g and 6.3 g, respectively. Free amino acid contents of the stir-fry and fresh okra seeds were measured as $2.69mg{\cdot}g^{-1}$ and $0.31mg{\cdot}g^{-1}$. Total polyphenolic compound content of the stirfry okra seeds was estimated as $12.61mg\;CGA{\cdot}g^{-1}$, compared to $2.54mg\;CGA{\cdot}g^{-1}$ fresh okra seeds, Thus, free amino acid and total polyphenolic compound contents in the stir-fry okra seeds were higher than fresh one, Antioxidant activities, such as DPPH and ABTS radical scavenging in the stir-fry okra seeds was the higher than fresh okra seeds.

• Journal of Life Science
• /
• v.12 no.6
• /
• pp.721-730
• /
• 2002

This study was carried out to select new pelleting binder and material for Welsh onion seeds. The optimum treatments of the various plant growth regulators to improve seed germination of the Welsh onion was also estimated. There were no significant effects of growth regulators on the germination percentage, but germination was faster according to the number of days to 50% of the final germination ($T_{50}$) and the mean number of days to germination (MDG) than those of the control. Germinability was increased when the seeds were soaked in gibberellic acid ($GA_3$) solution for 24hrs, even though there was no synergy effect on the germinability when $GA_3$ was mixed with 6-benzylaminopurine (BAP). The optimum treatment for improving germination of Welsh onion was observed when the tested seeds was soaked in 500 $\mu$M of $GA_3$ at $20^{\circ}C$ for 24hrs. Also, when the seeds soaked in the aforementioned treatment, the rate of germination was increased at lower temperature than at $20^{\circ}C$, the optimal temperature. The percentage and the speed of seed germination depended on the kinds of pelleting binder and their concentration. It showed that the higher the concentration of the binder for seeds pelleting, the lower the percentage of seed germination. Among the pelleting binder, polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) were the best binders for seed pelleting, because seed germination using those binder did not affect on the concentration of binder. On the other hand, Carboxymethy cellulose (CMC) and methyl cellulose (MC) severely inhibited the seed germination The germinability was also different arcording to the pelleting materials. Among the different 58 pelleting materials, kaoline alone, the mixture of bentonite and kaoline, the mixture of bentonite, calcium carbonate and diatomaceous earth #300 were found as the best pelleting materials for welsh onion seeds.