• Journal of Korean Society of Forest Science
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• v.104 no.2
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• pp.179-186
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• 2015

This study was conducted to understand the characteristics of flowering and the factors affecting fruiting grades of Acer pictum subsp. mono(APSM), We examined the characteristics of flowering and fruiting in various natural APSM forest, and investigated annual fruiting grade, DBH, tree height, number of APSM trees within 30 m on 29 selected trees in the natural broadleaved forest in Mt. Jungwang in Gangwon-do, from 2009 to 2014. APSM has heterodichogamous sexual system consist of protoandry and protogyny. Eight trees have changed their sex morphs; 3 trees change the sex morph PA to PG, and 5 trees does the sex morph PG to PA. Early fall of young ovary is concentrated until early July. Initially, the small samaras are common, and was gradually increased the samaras suffered insect damage. Most flowers of APSM are pollinated by Andrenidae sp., Syrphidae sp. and Tachinidae sp.. Number of early fall samaras and the status of fallen samaras showed a significant difference by the year and region. Corymbose panicle and young leaves developed on the top of APSM twigs. Newly grown opposite twigs of APSM did not grow sufficiently and had no floral buds. The highest fruiting grade of tree was 9.0, and the mean values was only 3.8. The highest fruiting grade of year was 4.55 in 2013, and the lowest did 0.07 in 2014. Highly significantly correlated and regressed between mean of annual fruiting rates and rates of crown under sun light. This results would imply that thinning for tree growth through improved light absorption might be a method to enhance seed production of APSM in the seed production forest.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2005.04a
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• pp.28-28
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• 2005

• Journal of Wetlands Research
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• v.22 no.2
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• pp.113-120
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• 2020

For the conservation of both Sericinus montela (vulnerable species by red book of Korea) and A. contorta, we investigated environmental factors affecting the growth and reproduction of Aristolochia contorta. We selected four A. contorta habitats at Gapyeong, Pyeongtaek, Cheongju, and Yeoju in Korea and surveyed community and habitat characteristics of companion species, herbivore appearance, support types, and soil physicochemical properties in July and October, 2018. Habitat environments and the growth and reproduction characteristics of A. contorta were different according to four habitats of different regions. In particular, the fastest growth speed and earliest flowering and fruiting were observed in Pyeongtaek. Growth of A. contorta in Cheongju and Yeoju were interrupted by aboveground damage from human disturbance. In this study, support types seemed to be important for growth speed of A. contorta. Flowering and fruiting timing were likely to be related to combined effects of soil cation contents and competitive and herbivore stresses. Therefore, providing effective support and reducing biological stress should be necessary for stable growth and proper flowering and fruiting timing of A. contorta. In addition, experimental evidence would be needed to figure out the effect of soil cation and biological stress on flowering and fruiting of A. contorta in detail.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.9 no.5
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• pp.82-95
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• 1988

9$\cdot$10월은 중$\cdot$만생종의 수확기이다. 이제까지의 고된 작업과 병해충과의 씨름도 어느정도 마무리 단계에 접어들게 되나 아직까지도 자칫 방심하면 다지어 놓은 농사를 망치기도 하고 조기낙엽에 의하여 내년도의 개화결실에도 나쁜 영향을 미치게 된다. 따라서 작업의 선후를 잘 계획하여 한 해의 농사를 마무리 지어야한다. 9$\cdot$10월의 중요한 과수원작업은 착색관리, 적기수확 및 저장, 추비시용인데, 병해충이 많을 때에는 약제방제도 소홀히 할 수 없으며, 태풍의 피해가 우려되는 과수원에서는 이에 대한 대비도 하여야 한다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.5 no.11
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• pp.10-16
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• 1984

금년도는 그야말로 풍년이다. 물론 결실기에 수해를 입은 일부 지역에 감수가 없었던 것은 아니지만 전국적으로 보아서는 금년도 쌀 목표 생산량 3,800만섬은 넘는다는 것이 모두의 이야기다. 금년에도 풍년을 이룩한데는 기상조건도 좋았겠지만 우연히 이루어진 것이 아니며 농민을 비롯한 모든 관계자들의 피땀어린 노력의 결정이라는 것은 누구도 부인할수가 없다. 물론 농정의 목표와 면밀한 시책의 수립 및 추진에도 힘입은바 크지만 그보다는 꾸준히 실천하고 노력한 농민들의 노고에 힘입은바 크다 .

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.5 no.10
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• pp.55-60
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• 1984

우리가 농토배양을 선두로 못자리 설치에서부터 긴 여름불볕 더위속에서 열심히 벼농사를 짓는 것은 결실의 계절인 가을에 질이 좋은 쌀, 보다 많은 쌀을 풍성한 마음으로 거두기 위해서 이다. 특히 올해는 벼 안전 다수확을 위해서 겨울 논물가두기부터 시작하여 못자리 조기설치, 일찍 모내기를 끝내고 적기병충해 방제와 마지막 단계에서 뜻밖의 폭우가 있었지만 폭우의 피해까지도 어느 정도 슬기롭게 극복하여 이제 최후의 거두어 들이는 작업에 온 정성을 다할 때가 되었으며 또 내년을 위해 금년 한해동안의 벼농사에서 잘 되었던 점과 못 되었던 점을 정리해 두었다가 거울로 삼는 것도 바람직하다.

• 보건세계
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• v.45 no.3 s.499
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• pp.4-7
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• 1998

지난 1997년은 결핵관리부분에도 많은 어려움이 있었던 해였다. 특히 국가결핵관리사업의 핵심사항인 영유아 결핵예방접종에 있어 민간의 병$\cdot$의원 경피 비시지 사용이 늘어 결핵예방사업에 지장을 주었고 결핵진단용약(PPD)의 공급차질 그리고 교육부와 학생 검진문제에 대한 의견상충 등으로 결핵관리사업편람을 재검토하는 계기가 되었다. 그러한 중에도 현재 마지막 정리단계에 있는 '2000년대 국가결핵관리 발전방안 모색을 위한 작업반'의 활동결과는 지난 1년간 각계의 전문가들이 여러차례의 진지한 토의를 거쳐 얻은 귀중한 결실이었다. 동 활동내용은 민간 병$\cdot$의원과 함께 결핵의 현실을 정확하게 재조명하고 해결방안을 찾고자 하는데 의미가 컸다고 할 수 있으며 우리나라의 중$\cdot$장기 결핵관리사업 계획수립에 기초가 되어 결핵의 조기퇴치에 크게 기여할 것이라고 확신한다. 1998년은 그 작업결과를 바탕으로 단기적으로 그동안 해결하지 못했던 문제점의 해결에 최선을 다하여 국가결핵관리의 체계를 재정립하고 장기적으로는 다가오는 2000년대에 대비하여 보다 발전된 국가결핵관리 사업의 초석을 다지고자 한다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.51 no.5
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• pp.420-424
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• 2006

This experiment was conducted to elucidate the basic physiological phenomena of pollination and fertilization for breeding in perilla (Perilla frutescens) through different 6 varieties derived from 2 genera under 4 temperature conditions at day and night. The pollen germination was observed after 30 minutes and pollen tube reached the lower part of pistil after 1 hour from artificial pollination. Seed formation was affected by temperature condition and a variety. The early maturing variety 'YCPL 25' showed a poor seed formation rate under the night temperature below $15^{\circ}C$, but the late maturing variety 'YCPL263' did not lowered even though the night time temperature was $10^{\circ}C$. The function of pistil was long maintained under the low temperature from the fact that if the live pollen pollinate artificially to the flower that does not form seed under low temperature, fruiting was made. Pollen was created and pollen tube was developed in the time of petal becomes bigger than calyx in five varieties, 'YCPLl77-1' etc. However, pollen was made and pollen tube was made only 71% in a green chajogi 'YCPL205-1'. These physiological phenomena of pollination and fertilization could be applicable to the emasculation and an effective breeding in perilla.

• Korean Journal of Breeding Science
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• v.41 no.4
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• pp.556-559
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• 2009

"Hongso" was originated from a cross between "Yoko" and "Hongro" in NIHHS, RDA, in 1989. "Hongso" was preliminarily selected in 2002 for its high fruit quality. After regional adaptability test at five sites from 2003 to 2006 as "Wonkyo Ga-30" it was finally selected in 2006. Optimum harvest time is early September which is similar to that of "Hongro". Fruit shape is globose conical and skin color is light red. Mean fruit weight is 295g and soluble solids content is 14.1oBrix. Fruits acidity is 0.34%, which is higher than that of "Hongro"(0.23%). It has a good taste for harmony of sugar and acidity. Storability is 3 weeks in room temperature. It is apt to russet on fruit skin. It is susceptible to Bitter rot. "Hongso" has a good cross compatibility with major cultivars such as "Fuji", "Hongro" and "Tsugaru". Tree habit is semi-spreading and tree vigor is weak. "Hongso" is high-density cultivation type cultivar, because it has a precocity, spur-type.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.50 no.spc1
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• pp.224-227
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• 2005

We evaluated fruity characteristics to select the desirable mulberry varieties for the production of fruit. Tested items were total yield, weight of single fruit, soluble solids and fruit size including length, width, and petiole length. 'Susungppong', 'Cheongnosang', 'Suwonnosang' and 'Jeolgokchosaeng (Chungbuk)' were showed high yield for three years. In weight of single fruit, 'Jeolgokchosaeng (Chungbuk)' was 4.5 g. 4 mulberry varieties were showed move than 17 Brix $\%$ in soluble solids. From that results, eight suitable varieties such as 'Jeolgokchosaeng (Chungbuk)', 'Dangsang 7', 'Jangsosang', 'Susungppong', 'Suwonnosang', 'Palcheongsipyung', 'Kangsun', and 'Jukcheonchosaeng' were selected for the production of fruit.