• Korean Journal of Environmental Agriculture
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• v.17 no.3
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• pp.274-278
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• 1998

To observe the stimulating effects of low-dose ${\gamma}-radiation$ on the Chinese cabbage, $1{\sim}5$ years old seeds were cultivated in the green house and the experimental field after irradiation of $0.5Gy{\sim}30.0Gy$ and the growth characters of them were investigated. The germination rates and the seedling heights of old seeds increased positively in the green house, but different from each other depending on their period of storage. Those of 3-, 4-, and 5-year old seeds increased remarkably at the 4.0Gy-, 1.0Gy-, and 0.5Gy-irradiation group respectively. However, in the case of 1-year and 2-year old seeds, there were not significant effects of irradiation except the increase of seedling height. There were significant increasing effects of radiation on the plant height, fresh weight, and diameter of all seeds grown in the experimental field of 4.0Gy- and 8.0Gy-irradiation group, including the corresponding effects of 1-year and 2-year old seeds in 20.0Gy- and 30.0Gy-irradiation group.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05b
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• pp.645-650
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• 1998

작물과 채소류의 생육에 대한 저선량 방사선 조사효과를 보고자 온실과 포장실험을 수행한 결과, 발아율과 유묘초장을 조사한 초기생육의 경우 벼, 콩 및 들깨의 200rad, 400rad, 100rad에서 생육촉진 효과를 볼 수 있었다 포장실험에서 벼의 경우 저선량조사에 의해 수량증가 효과는 없었고 종자의 불임율이 감소하였으며 콩과 들깨의 경우 400rad에서 생육상태와 수량이 다소 양호하여 저선량에 의한 생육촉진 효과가 인정되었다. 배추와 무의 경우는 200rad에서 발아율이 증가하여 저선량조사에 의한 효과를 볼 수 있었고 800rad에서 초장 등이 다소 증가하였으나 뚜렷한 수량증가 효과는 볼 수 없었다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.38 no.2
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• pp.166-173
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• 1993

Seed infection to pod and stem blight (Diaporthe phaseolorum) is severe at summer type soybeans maturing at hot and humid conditions. In order to increase germination and plant stand, this experiments were evaluated the effects of fungicide Benoram(Benomyl 20% ${\pm}$ Thiram 20%) seed treatments with different seed sizes on emergence yield at field conditions, and with different infection degrees to pod and stem blight on germination in laboratory. Benoram treatment on seed was improved emergence rate and elongated hypocotyl not increased growth and yield. It was clearly improved length but germinations and germination speed by Benoram fungicide treatment on severely infected seed however was not improved germination rate at good quality of seeds and the effect was higher at large seed cultivar than small ones.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.1
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• pp.44-52
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• 1990

In order to examine the possibility of seed propagation of jerusalem artichoke (Helianthus tuberosus L.) which has been propagated vegatatively so far, it was investigated the growth characteristics of seedlings and the biomass productivity by seed propagation in jerusalem artichoke. The results indicated that the seedlings from seeds exhibited the physiological dwarfing as a rosette habit. The physiological dwarfing as a rosette habit in jerusalem artichoke seedlings from seeds was a kind of appearance affected by photoperiod. This abnormal habit in seedlings from JA6 seeds during the growing period was persisted in short photoperiod of 10 hrs but was disappeared in long photoperiod of 14 hrs. In the condition of long photoperiod, seedlings from seeds grew normally and the average tuber yields obtained from seed propagation was finally 3.51 ton/10a, which can be the satisfying level to the use of seed propagation despite its complexity such as the needs of specific seedling time because it gives a high biomass productivity. This potential utilization of seed propagation in jerusalem artichoke can be basically applied to the collection or preservation of germ plasm and the improvement of jerusalem artichoke.

• Journal of The Korean Society of Grassland and Forage Science
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• v.32 no.2
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• pp.157-164
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• 2012

This experiment was conducted to investigate an optimum harvest time for hairy vetch (HV) seed production. The seeds were harvested at 5 times, 35, 42, 48, 54, and 58 days after flowering (DAF) in 2009 and 2010. In 2011, 3 times of harvest, 39, 49, and 53 DAF were done at Suwon, middle part of Korea. HV plants were harvested and threshed by manually at each time. Seed yield, yield components, germination rate, hard seed rate, and viviparous germination rate were investigated. The highest seed yield represented 54 DAF in 2009, 42 DAF in 2010, and 49 DAF in 2011. When the triticale, HV support plant, comes to early lodging, the time of highest yield was delayed. 1,000-seed weight linearly increased from 35 DAF to 54 DAF. The later harvested seed showed a trend of increasing germination and hard seed ratio. However, viviparous germination had occurred because of in rainy season. In conclusion, it was presumed that an optimum harvest time for safe seed production in HV should be during 42 DAF ~ 54 DAF before the rainy season considering seed yield, 1,000-seed weight and germination.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.08a
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• pp.65-65
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• 2020

우리나라의 잇꽃 재배는 2010년 39ha 수준이 재배되다가 2014년에는 76ha 까지 확대되었으나 점차 감소하는 추세를 보이고 있으며 2018년에는 55ha가 재배되고 있는 것으로 보고되었고 주산지는 전라남도와 경상북도로 알려져 있다. 잇꽃(Carthamus tinctorius L.)은 국화과에 속하는 두해살이 초본 식물로 한자명은 홍화(紅花), 영명으로는 Safflower를 사용하고 있다. 우리나라에서 잇꽃 이용은 잇꽃 종실을 위주로 이용되고 있으나 일본의 경우 잇꽃의 경관적 가치를 활용하여 산형현(山形縣)에서는 홍화축제가 매년 개최되고 있으며, 미국 등에서는 잇꽃의 저온 압착유가 기능성 건강식품류로 판매되고 있다. 본 연구는 차광 조건에 따른 잇꽃의 개화특성 및 종자의 지방산 조성을 조사하여 일조시수가 짧은 준고랭지에서 잇꽃의 적응성을 평가하기 위해 수행되었다. 차광조건별로 개화기의 엽면적을 조사한 결과 30% 차광조건에서 9041.0mm²로 무차광에 비해 높아지는 양상을 보였고 50% 이상의 차광에서는 유의하게 낮아지는 경향을 나타냈다. 식물체의 초장은 50% 차광에서 낮아지는 양상이었으며, 주경의 착엽수는 30%와 70% 차광조건에서 18.3매/주 이상으로 증가되는 경향을 보였다. 화서별 착화수에서는 1차 화경 및 2차 화경 모두에서 30% 차광조건에서 착화수가 높은 경향을 나타냈으며 70% 차광조건에서는 2차화경 착화수가 유의하게 낮아지는 경향을 보였다. 차광 조건별로 잇꽃의 개화단계를 비교한 결과 동일한 조사시기에 무차광에서는 개화 3단계의 만개기까지 도달한 비율이 51.6%로 높았으나 50% 이상 차광에서는 11.1%로 낮아 개화가 지연되는 결과를 보였다. 차광조건에 따른 종자의 100립중은 무차광에서 4.9g의로 유의하게 높았으며 차광 비율이 높아질수록 낮아지는 양상이었고 단윔녀적당 종자 수량에서도 무차광이 201.1kg/10a를 보인 반면70% 차광에서는 86.6kg/10a의 낮은 수량을 보였다. 잇꽃 종자의지방산 조성에서 조지방 함량은 18.1~18.6% 범위로 차광조건에 따른 유의한 차이는 없었으며 palmitic acid의 함량은 무차광에서 5.35%로 높았으나, oleic acid의 함량은 30% 차광조건에서 10.2%로 무차광에 비해 높아지는 양상을 나타냈으며 linoleic acid는 50% 차광조건에서 83.6%로 가장 높은 비율을 보였다.

• Proceedings of the Korean Society of Grassland Science Conference
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• 2000.09a
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• pp.106.1-106
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2020.06a
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• pp.94-94
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• 2020

• Proceedings of the Korean Society of Crop Science Conference
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• 1994.10a
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• pp.32-33
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• 1994

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.2
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• pp.101-106
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• 2003

This experiment was carried out to investigate the growth characteristics and seed productivities of orchardgrass "Hwabsung 2 ho" according to seeding times in the NLRI from 2001 to 2002. The experimental design was a randomized block arrangement with three replications. Seed was sown on 10th, 20th, and 30th of Aug. and 10th, 20th, and 30th of Sept. in 2000 and 2001, respectively. Establishment of seedling was worse in seeding of Aug. 10th because of rainfall. Number of panicles per $1\textrm{m}^2$ was numerous in seeding of Aug. 20th and was fewer according as seeding time was later. But panicle did not nearly appear in seeding after Sept. 20th. Seeding of Aug. 20th produced seed yield of 759kg/ha and have most seed yield components. But according as seeding times were later than Aug. 20th, the seed yield was linearly decreased with seed yield components worse.nts worse.