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A New Rose of Sharon Variety, “Changhae” Developed by A Mutation Breeding
강시용,송희섭,박인숙,Young Taik Lim,,Jin Kyu Kim,,Geung-Joo Lee,,Dong Sub Kim,,Jin Baek Kim 한국육종학회 2006 한국육종학회지 Vol.38 No.5
“Changhae” is a new Hibiscus variety developed by a mutation breeding by using a gama ray irradiation. One hun-dred seeds of the original variety, “Suminokura”, grown in a breeding field in the Namyangju, Gyeonggi Province were iradiatedwith a 100 Gy gama ray from a 60Co source at the Korea Atomic Energy Research Institute in 1993 (Fig. 1). The original variety,h,and a red purple color with a red-eye in the center of it's flower. The irradiated seeds were sown in an experiment field in Namy-angju, in April 1994. Sixty-five out of the 100 seeds survived. Among them, one plant was selected as a promising mutant linewith an attractable flower color, “Suminokura S-10-1” in 1996. The propagation of the mutants by means of a cutting and ans“Weonnong 1”. The leaf traits of the mutant were larger than those of the original variety, except for the incision depth and baseangle of the leaf (Table 1). The sizes of a flower, the red eyes and the pistils in the mutant were larger than those of the originalvariety (Table 2). The flower showed a bluish purple color (RHS 7B) based on the color chart prepared by The Royal Horti-ename of the new variety, “Changhae” reflects its bluish flower color and it's large flower (Fig. 2).
발아증진 및 소독을 위한 물리적 방법을 이용한 종자처리 기술
강시용 (사)한국방사선산업학회 2023 방사선산업학회지 Vol.17 No.2
S ince seeds can be directly used as food resources as well as for crop cultivation orpreservation of genetic resources, it is essential to develop high-quality seed processing technology toincrease agricultural productivity. Seed treatment means processing technologies of seeds throughphysical or chemical treatment processes from after harvesting seeds to before sowing of seeds toimprove germination and growth rate, durability, and immunity, etc. Since chemical seed treatmenttechnology using pesticides or plant growth regulators has problems of environmental pollution andhuman toxicity, it is desired to develop an alternative technology. As a physical seed treatment method,various technologies such as ionizing radiation, plasma, microwave, and magnetic field are beingdeveloped, and some of them are being used practically. In this paper, I will summarize the mechanismof seed priming and disinfection, and the advantages and disadvantages of application, focusing on thesephysical seed treatment methods. Low dose or moderate intensity ionizing radiation, microwave, lowtemperatureplasma, and magnetic field treatments often promoted seed germination and seedlinggrowth. However, effective removal of direct seed pathogens at these treatment intensities appears tobe difficult. And it has been shown that relatively high-dose electron beam treatment using low-energyelectron beams kills microorganisms on the seed surface and hull layer while not damaging the innertissue of the seed, and is also effectively used for seed treatment on a commercial scale. In order to putthe physical seed treatment technology to practical use in Korea, it is necessary to develop an economicalscale treatment device along with the development of individual treatment technology to each crop.
신도입 케나프 품종의 파종시기에 따른 생육 및 수량 변동과 광합성 특성
강시용,강영길,유장걸,김판기,류기중,송희섭,강봉균 한국자원식물학회 2004 한국자원식물학회지 Vol.17 No.2
Kenaf (Hibiscus cannabinusL.), an annual plant of the family Malvaceae, is considered tobe the most promising for alternative plants with potential use as a non-wood fiber source.The objectives of this study were to select the optimum seeding date and adaptable cultivaramong newly introduced kenaf cultivars (Everglades-41, Tainung-2 and Chingpi-3) in Jejuisland, and to clarify the photosynthetic characteristics of those cultivars. Among the threecultivars, the fresh shoot weight per unit area of Chingpi-3 at harvest season showed highestthrough all seeding dates, that of while Everglades-41 was the lowest. The difference of shootyield at harvest mainly due to seedling stand rate and plant number per unit area among thecultivars. The Chingpi-3 showed the highest shoot fresh weight in the seeding date of May 11and decreased trend in the late seeding dates. Net photosynthesis rate was higher onEverglades-41 with entire type leaf than other two cultivars with palmate type leaf. Theactivity of ribulose-1,5- bisphosphate carboxylase/oxygenase(rubisco) estimated from the A-Ci curve showed highest in Chingpi-3 among three cultivars. These results suggest thatChingpi-3 might be adaptable cultivar with seeding date of around May 10 for kenafproduction in Jeju island.
A Dwarf Type New Rose of Sharon Variety, “Ggoma” Developed by a Mutation Breeding
강시용,송희섭,박인숙,Young Taik Lim,,Jin Kyu Kim,,Geung-Joo Lee,,Dong Sub Kim,,Sang Jae Lee, 한국육종학회 2006 한국육종학회지 Vol.38 No.5
‘Ggoma’ is a new variety released by a mutation breeding using a gamma ray irradiation at the Korea AtomicEnergy Research Institute (KAERI). One hundred seeds of the original native variety, ‘Hongdansim 2’, were collected from arounda 35 year old plant, grown in a breeding field in Namyangju, Gyeonggi Province. The seeds were irradiated with a 100 Gy gammaray from a 60flower, with an intermediate petal width and a light purple color with a red eye in the center of its flower. The iradiated seeds weresown in the Namyangju breding field in April 1992. One plant was selected as a potential mutant ‘Hongdansim 2-10-11 fromthirty-two out of the irradiated 100 seeds which survived in 1994. The mutant was propagated by a cutting method and it's phe-of the leaf traits except for the base angle of the mutant were much smaller than those of the original variety (Table 1). The flowercolor was light purple in the RHS 7C code based on the color chart prepared by The Royal Horticultural Society, London, whichwas identical to the flower color of the original variety. The flower type of the selected mutant was an I-a type, which was diferenthanthose of the original variety (Table 2). Also the plant height of the selected 8 year old mutant was about 1 m and available as abonsai or pot culture. The name of the new variety, ‘Ggoma’ reflects its dwarf type (Fig. 2).