• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.84-89
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• 2002

소규모의 채소재배농가에서 육묘포트에 종자를 파종하는 작업은 대부분 손으로 파종하고 있으며, 중규모 이상의 채소재배농가에서는 간이파종기를 이용하거나 육묘공장에서 모를 구입하여 사용하고 있다. 간이파종기는 진공흡인력을 이용하는 종자흡인식과 평판의 구멍에 종자를 가두어놓았다가 낙하시키는 구멍배종방식 등이 주로 이용되고 있다(한국농업기계학회, 1998). 간이파종기는 대부분 플러그 육묘트레이에 사용할 수 있도록 되어 있으며, 포트수가 다른 플러그 육묘트레이를 사용하려면 새로운 포트규격에 맞는 파종장치를 구입하여야 하기 때문에 추가비용이 소요된다. 소규모 채소재배농가에서는 25, 36, 49공 등의 여러 가지 규격의 연결포트를 사용하고 영농규모가 작기 때문에 간이파종기를 구입하는 것이 부담스러운 실정이다. (중략)

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.1
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• pp.98-101
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• 1984

Endorcarp inhibited the embryo growth of ginseng seeds. This inhibition is not due to impermeability to water, but is probably caused by mechanical resistance. The embryo growth rate was enhanced by endocarp injury by soaking for 10 to 30 minutes in 2.5% solution of sodium hydroxide. But sulfuric acid did not affect on the embryo growth of ginseng seed.

• Journal of Korean Orthopaedic Sports Medicine
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• v.11 no.2
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• pp.87-91
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• 2012

Nonunion of the hallucal sesamoid usually occurs after stress fracture. In case of persistent disabling symptoms after non-operative treatment, surgery can be an option. We report a rare case of combined stress fractures of the medial bipartite sesamoid and the lateral sesamoid after overuse. Nonunion of the medial sesamoid developed in spite of cast immobilization, and it was eventually healed with curettage and bone grafting.

• Journal of Korean Society of Forest Science
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• v.102 no.1
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• pp.1-6
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• 2013

This study was conducted to investigate the variation of fruit and seed morphology among populations and among individuals within population of Sorbus commixta Hedl. distributed in Korea. Fruits collected from 42 trees in six natural populations and their six fruit and four seed characteristics were analyzed. In all characteristics, there were significant differences among populations and among individuals within populations. Especially, number of fruits per fruit-bearing branch and number of seeds per fruit showed higher values among populations in total variance component. Coefficients of variation in the number of fruits per fruit-bearing branch and seed weight are relatively high (42.0~75.3%) compared to other traits (11.9~32.1%). As a result of simple correlation analysis, the number of fruits per fruit-bearing branch showed a significant positive correlation with latitude but showed a negative correlation with longitude. According to cluster analysis, geographically close populations showed the tendency of clustering into the same group. Three principal components (PC) were deduced from principal component analysis, which explain the 87% of total variance of fruit and seed characteristics. The highest contribution was seed length and seed weight in PC1, fruit width and seed index in PC2 and fruit length and number of fruits per fruit-bearing branch in PC3.

• Horticultural Science & Technology
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• v.32 no.1
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• pp.26-32
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• 2014

We investigate the effect of post-conditioning periods and seed orientation on the vigor of cucurbit seeds with dry heat treatment (DHT). All the dry-heat treated seeds exhibited varying degree of seed vigor decreases. In general, pumpkin seeds showed less vigor decreases than the bottle gourd seeds. When the dry heat treated seeds were germinated after post-conditioning for 0, 30, and 120 days, the percentage of germination was enhanced by increasing the period of post-conditioning and the efficiency of post-conditioning differed by crop and cultivar. In both bottle gourd and pumpkin, the vigor of seeds placed in vertically upward and horizontal orientations was higher than that of the seeds placed in the vertically downward orientation. The results suggested that the vigor of dry-heat treated seeds could be improved by applying the proper post-conditioning and seed orientation.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.67-67
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• 2022

먹넌출은 국내에서 안면도에서만 자생하는 희귀식물로, 항산화, 미백, 항암 효능이 밝혀져 유용식물자원으로의 활용이 기대되나 IUCN(세계자연보전연맹) 기준 취약종(VU)으로 분류되어 생명자원의 현지 내, 현지외 보존 필요성이 크다. 따라서 본 연구는 먹넌출의 종자를 이용한 보존과 증식을 위해 기초자료를 확보하고자 하였다. 이를 위해 열매의 성숙도에 따른 형태적 특성과 활력 차이를 비교하고, 종자의 발아 조건 구명을 위해 휴면 종류와 발아 적온을 조사하였다. 먼저 열매 성숙도에 따른 형태적 특성과 활력 조사 결과, 열매가 부분적으로 성숙한 적색 단계는 완전히 성숙한 흑색 단계와 비교하여 종자 무게와 배길이에서 차이가 거의 나타나지 않았고 충실도가 80%, 충실 종자의 활력이 100%로 나타났다. 따라서 종자 채취 시 열매가 흑색으로 성숙하여 떨어지기 전인 적색 단계에서 채취하여도 종자를 이용한 증식에 문제가 없을 것으로 보인다. 또한 먹넌출 종자는 딱딱한 과피로 덮여있지만 수분 흡수를 가능하게 하는 조직을 가지고 있어 물리적 휴면에 해당하지 않았으나 생리적 휴면을 가지고 있었으며, 휴면 타파에는 GA3 1000ppm 처리가 가장 효과적이었다. 또한 발아 온도는 10℃ 12시간, 20℃ 12시간인 변온 조건에서 가장 높은 발아율을 보였다. 본 결과를 먹넌출 종자 수집과 증식에 참고 자료로 활용할 수 있을 것으로 기대한다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2000.02a
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• pp.107-113
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• 2000

• Life and Agrochemicals
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• s.249
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• pp.44-45
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• 2009

도깨비가지는 종자 뿐만 아니라 뿌리의 번식력이 왕성하여 방제가 어려운 문제 잡초이다. 종자발아를 억제시키는 토양처리형 제초제와 뿌리까지 방제할 수 있는 경엽처리형 제초제로 방제한다.

• Proceedings of the Korean Society of Grassland Science Conference
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• 2001.06a
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• pp.91.2-92
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• 2001

• Research in Plant Disease
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• v.17 no.2
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• pp.148-154
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• 2011

This study was conducted to control the seed borne pathogens (Alternaria spp.) of carrot and to examine the seed germination rate by using 13 environment friendly agricultural materials instead of conventional chemicals for organic cultivation. The growth inhibiting effects on pathogens showed the different responses according to each agricultural material and effective 7 materials against seed borne pathogens were selected. Among 7 materials, the carrot seeds sterilized with plant extracts, Tanger Stop and Land Saver were not germinated at all. The germination rate of seeds sterilized with other materials showed the similar levels with reference chemical (Benlate-T) and non-treated seeds. Infection rates of seeds sterilized with seaweed extract, Bellopper for controlling A. radicina and plant extract, Ssial-100 for A. dauci were similar or low infection rate compared with reference chemical. The germination rate and root length of seeds sterilized with Bellopper and Ssial-100 was similar or superior to those of chemical sterilized seeds. The optimal condition seemed to be a little bit different depending on the concentration of materials. As a result, the sterilization of carrot seeds by using the environment friendly materials could be effectively utilized as a technology to inhibit the infection of seed-borne pathogens.