• Title/Summary/Keyword: Mature fruit

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Post-infectional Activities of Non-systemic Fungicides Against Apple White Rot

  • Park, Chang-Hee;Hyun Woo;Kim, Dae-Hee;Uhm, Jae-Youl
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.92.1-92
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    • 2003
  • In order to develop an effective spray program for control of apple white rot with reduced use of fungicides, the control efficacy of several fungicides that has been intensively used for control of the disease was assessed. They were sprayed on the same tree with 15 day interval from late May to early August. Just prior to and after each spray, 100 fruits were bagged with two layered fruit bag to limit the chemical application in only one time, and the disease incidence and latent infection frequency on the bagged apples were examined. Some fungicides such as folpet, iminoctadine-triacetate and azoxystrobin showed a high post-infectional activity even though the former two are non- systemic. Folpet suppressed symptom development, iminoctadine-triacetate reduced infection frequency and azoxystrobin acted in both ways. When those fungicides were !! adopted in a spray program, once in a cropping season, their post-infectional activity became much greater. This activity shown by the non-systemic fungicides was supposed to be derived from the peculiar infection process of the white rot fungus of which the pathogen is usually remain latent in the corked cells of lenticel until the apple reach mature stage.

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'Jinmi', a High-sugar, Mid- to Late-maturing, White-fleshed Peach (중만생, 고당도 백육계 복숭아 '진미(珍美)')

  • Kang, Sang-Jo;Chung, Kyeong-Ho;Jun, Ji-Hyae;Kim, Ho-Yeol;Kim, Whee-Cheon;Lee, Don-Kyun
    • Horticultural Science & Technology
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    • v.17 no.1
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    • pp.19-20
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    • 1999
  • 'Jinmi' was released by National Horticultural Research Institute in 1998 as a white-fleshed, mid- to late-maturing, and clingstone peach variety, which originated from the crossing of 'Hakuho' and 'Nunomewase' in 1982. The selection was tested for regional adaptability as 'Wonkyo Da-09' at 5 areas for 4 years from 1995. Fruits mature 5 to 7 days before 'Yumyeong' and have high sugar content, above $13.0^oBx$.

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'Baekhyang', a Rich-flavor, White-fleshed, Late-maturing, and Freestone Peach (고향기성(高香氣性) 백육계(白肉系) 만숙(晩熟) 단경기(端境期) 출하용(出荷用) 복숭아 '백향(白香)')

  • Kang, Sang-Jo;Chung, Kyeong-Ho;Kim, Ho-Yeol;Kim, Whee-Cheon;Lee, Don-Kyun
    • Horticultural Science & Technology
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    • v.17 no.1
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    • pp.17-18
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    • 1999
  • 'Baekhyang' was released by National Horticultural Research Institute in 1994 as a white-fleshed, late-maturing, and freestone peach variety, which originated from open-pollinated seeds of 'Garden State' nectarine collected in 1978. This variety was tested as 'Wonkyo Da-05' at 4 areas for 4 years from 1991. 'Baekhyang' is the latest maturing among white-fleshed peach varieties in Korea. Fruits mature 10 to 15 days after 'Yumyeong' and have rich-flavor and good quality.

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Phenology of Zostera marina at Tongyeong in Southern Coast of Korea (통영 연안에 분포하는 거머리말의 계절변동과 생식특성)

  • Yoon, Joon-Sik;Kim, Nam-Gil
    • Journal of Marine Bioscience and Biotechnology
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    • v.11 no.2
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    • pp.62-70
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    • 2019
  • We investigated the variation of morphological features, density, biomass and characteristics of reproductive shoot on Zostera marina. This species was monthly monitored and collected during a year in Tongyeong (from January 2016 to December 2016). Morphological features, biomass and density showed significantly seasonal variation (p<0.001). Dimensions of Z. marina were highest in spring and early summer but lowest in winter. Biomass and leaf density of Z. marina showed highest value in May (4,700.5 g w·wt m-2) and June (858.0 leaves m-2) respectively and lowest value in November (515.9 g w·wt m-2 and 312.0 leaves m-2). Reproductive shoot was monitored from April (13℃) to June (21℃) and grew up to ca. 200 cm. Spathe length, spadix weight, numbers and weight of fruit showed significantly different on monthly. None mature flowers were monitored in April but matured flowers, fruits were founded in May and seed releasing were occurred in June.

Inheritance of Anthracnose Resistance in a New Genetic Resource, Capsicum baccatum PI594137

  • Kim, Sang-Hoon;Yoon, Jae-Bok;Park, Hyo-Guen
    • Journal of Crop Science and Biotechnology
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    • v.11 no.1
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    • pp.13-16
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    • 2008
  • Pepper fruit anthracnose caused by Colletotrichum species is an economically important disease that causes serious yield loss and quality deterioration in many Asian countries including South Korea and Taiwan. Recently, Capsicum baccatum PI594137 was found to exhibit broad-spectrum resistance to Colletotrichum acutatum. The inheritance of anthracnose resistance to C. acutatum was analyzed in an intraspecific population derived from a cross between C. baccatum Golden-aji and PI594137. Detached mature green fruits were inoculated using the microinjection method. The disease response was evaluated as the disease incidence and the overall lesion diameter at 7 days after inoculation(DAI). The segregation ratios of resistance and susceptibility to C. acutatum in the $F_2$ and $BC_s$ populations significantly fit a 3:1 Mendelian model. This result indicates that the resistance of PI594137 to C. acutatum is controlled by a single dominant gene.

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FEASIBILITY STUDIES INTO NIR TECHNIQUE FOR MEASUREMENT OF INTERNAL QUALITY OF SOME TROPICAL FRUITS

  • Kouno, Yoshihide;Mizuno, Toshihiro;Maeda, Hiromu
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 1993.10a
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    • pp.326-333
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    • 1993
  • Okinawa Prefecture is located in the southernmost part of Japan and has a subtropical climate. A lot of tropical fruits such as pineapples, mangoes and papayas are produced. Pineapples were mainly supplied to the canning industry. Since April 1990, the Japanese Government released the foreign trade restriction of canned pineapples and pineapple juice in accordance with GATT. Okinawan Farmers have been expanding the customers from the processing industry to the fresh market. During the recent year, fully mature, high quality pineapples which have 15 Brix in sugar content are produced in green houses on Okinawa. Prices are 2 to 3 times those of the imported pineapples. At present, they are sorted manually, and this sorting might cause the pineapples to lose their reputation. NIR applied fruit sorters have been developed and operated for apples and peaches in Japan . NIR applied tests were carried out to consider the feasibility into the NIR technique for measurement of the NIR a alysis suggests adequate correlations between sugar content and NIR reflectance properties of pineapples and mangoes.

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An Unrecorded Species of Opuntia (Cactaceae) in Korea: O. monacantha Haw. (Opuntia속(선인장과)의 한국 미기록 식물: 왕선인장)

  • Koh, Seok Chan;Kim, Je Kook;Kim, Moon Hong
    • Korean Journal of Plant Resources
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    • v.31 no.1
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    • pp.32-36
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    • 2018
  • An unrecorded cactus species, Opuntia monacantha Haw. (Cactaceae), is newly reported in Korea. It was found growing on the coast of Jeju Island. It is distinguished from other Opuntia species by the following morphological characteristics. It is an erect succulent tree, commonly 2~3 m, but can reach 4 m. It is highly branched at the top and has drooping upper branches. The cladodes are oval to obovate, narrowing basally, and glossy green. It has yellow outer tepals with a reddish median stripe on the back. It produces purple fruit with yellowish green juicy pulp, which contains several rudimentary seeds and very few mature seeds (<2). The Korean name "Wang-seon-in-jang" is given to the species, based on the height of the plants and the large cladodes.

Resistance to Anthracnose Caused by Colletotrichum acutatum in Chili Pepper(Capsicum annuum L.)

  • Kim, Sang-Hoon;Yoon, Jae-Bok;Do, Jae-Wahng;Park, Hyo-Guen
    • Journal of Crop Science and Biotechnology
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    • v.10 no.4
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    • pp.277-280
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    • 2007
  • Pepper fruit anthracnose, caused by Colletotrichum acutatum, results in serious yield loss and affects crop quality in many Asian countries, making it a disease of economic consequence. A source resistant to C. acutatum was identified by the AVRDC within the line Capsicum chinense Jacq. PBC932. The resistant breeding line C. annuum AR is the $BC_3F_6$ generation derived from C. chinense Jacq. PBC932. The inheritance of resistance to C. acutatum was analyzed in segregating populations derived from the two crosses HN 11$\times$AR and Daepoong-cho$\times$AR. Detached mature green fruits were inoculated using microinjection method. The disease response was evaluated as the disease incidence at 7 DAI. The segregation ratios of resistance and susceptibility to C. acutatum in the $F_2$ and $BC_R$ populations derived from the two crosses fit significantly to a 1:3 Mendelian model. This indicates that the resistance of AR to C. acutatum is controlled by a single recessive gene.

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Development of the Supplementary Foods for Infants Using Korean Foods - Development and Analysis of Nutrients of the Supplementary Foods - (국내식품을 이용한 이유식 개발에 관한 연구(I) - 이유식의 개발과 성분 및 영양소 분석 -)

  • Min, Sung-hee;Sohn, Kyung-Hee;Yoon, Sun
    • Korean journal of food and cookery science
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    • v.9 no.2
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    • pp.99-104
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    • 1993
  • This study was carried out in order to develop supplementary foods for infants using Korean foods. Thirty-four different kinds of supplementary foods were developed and fourteen representative ones were selected to be analyzed chemically. The results are as follows: 1. The developed supplementary foods were 34 kinds and divided into 3 stages. First stage is designed for the babies just beginning to eat pureed vegetables and fruits. Second stage combined the nutritional attributes of both vegetables and meat. Third stage featured tender, bite-size pieces of meats and vegetables that appealed to the most mature tastes of basies. 2. In the production of prepared foods; water, milk, vegetable juice, fruit juice, and soy milk were used as the liquid source; rice, rice starch, chestnut, noodle, potatoes, sweet potatoes, rice cakes as the carbohydrate source; fish, meats soybean curd, beans, eggs, chicken, cow liver as the protein source; and vegetables and fruits were used as vitamin & mineral source. 3. The approximate composition range of the products were 10.91∼24.46% carbohydrate, 0.15∼6.06% protein, 0.092∼7% fat, 0.13∼ 1.37% ash, 0.63∼36.34% calcium, 0.092∼0.48% iron and 0.42∼16.36% vitamin C.

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Study of the Hermeneutical Phenomenon regarding the Meaning of the Driving Force of Life Experienced by the Elderly (노인이 경험하는 삶의 원동력 의미에 관한 해석학적 현상학 연구)

  • Han, SukJung;Kang, KyungAh;Lim, YoungSook
    • Journal of Korean Public Health Nursing
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    • v.33 no.1
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    • pp.109-122
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    • 2019
  • Purpose: The purpose of this study was to understand the meaning of the driving force of life experienced by the elderly and the realistic structure of their experience. Methods: The research question was "What is the essential meaning of the driving force experienced by the elderly?". Data were collected from individual in-depth interviews between March, 2017 and May, 2017 and analyzed using Van Manen's hermeneutic phenomenological methodology to identify the essential themes of their experience. Results: Through the analysis process, 22 themes and 14 essential themes were derived. The 14 essential themes of the driving force of the life of elderly were as follows: 'Memories from the past', 'Poverty to escape', 'Hand down family's heritage', 'A body bound by marriage', 'A body necessary for old age', 'A dignified body even if they grow older', 'A body that does not want to fall', 'A fruit of my life', 'Mature real love', 'Unchanging fraternity', 'Extended family', 'An old friend with whom share my heart', 'Satisfied with the situation', and 'Expanding the breadth of life'. Conclusion: Nursing programs that assess the driving force of life supporting the elderly and supports the driving force of such a life should be developed.