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사과 대목 품종이 ‘후지’의 조기 생산성 및 과실특성에 미치는 영향
허성 강원대학교 농업생명과학연구원 2022 강원 농업생명환경연구 Vol.34 No.2
Various apple rootstocks have been developed to induce higher yields and to enhance adaptation to different climatic and environmental conditions. However, the performance of apple rootstocks in South Korea has not been properly investigated. In this study, the influence of 13 apple rootstocks where scion cultivar ‘Fuji’ was grafted was evaluated by fruit count per tree, yields per tree, and fruit characteristics, such as average fruit weight, fruit length, fruit diameter, acidity, sugar content, and fruit firmness for two years. Apple trees grafted onto the M.9 series had more fruits per tree than those grafted onto other rootstocks. The fruit yield per tree of M.9 EMLA was much higher than that of M.26 EMLA. An analysis of covariance was used to evaluate the effect of rootstocks on fruit yield per tree when fruit count per tree was included in the linear model as a covariate. There was a significant difference in the estimated marginal means of P.22 and P.16 in the third and fourth year of planting, respectively, compared to other rootstocks. As a result of comparing the fruit characteristics produced by each rootstock, the fruit of M.9 EMLA was larger in length and width than those of other rootstocks, and fruit weight was much heavier. Principal component analysis showed that the fruits of M.9 EMLA were of higher quality than those of the other rootstocks. Therefore, M.9 EMLA was evaluated as being suitable for the Korean market where, large fruits are favored.
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허성,황정환,신일섭,신용억,김기홍 한국육종학회 2009 한국육종학회지 Vol.41 No.4
"원교 가-단과지 1호"는 농촌진흥청 국립원예특작과학원에서 고품질 중생종 "Starkrimson"에 무측지성 "McIntosh Wijick"을 1992년에 교배하여, 2000년부터 2008년까지 그 특성을 조사한 결과, 과실 특성이 뛰어난 계통을 중간모본으로 최종 선발 하였다. 만개기는 "홍로"와 비슷하거나 2일 정도 느리고, 숙기는 "홍로"보다 일주일 정도 느리다. 수세는 중, 수자는 반개 장형이고, 단과지 형성 및 착과량은 "홍로"와 같이 많은 편이 Intermediate parent "Wonkyo Ga-Dangwagi 1" (Malus domestica Borkh.) was released from Fruit Research Division, National Institute of Horticultural & Herbal Science, Korea in 2008. It was derived from the cross between "Starkrimson" and columnar type "McIntosh Wijcik" in 1992 after selection tests from 2000 to 2008. Trees are moderately vigorous and have spreading branching habit. It bears abundant flower buds on one-year-old branches and fruits mainly on spurs or short branches. Harvesting time of this variety is late September, 7 days later than that of "Hongro" in Suwon. The fruit is conical to narrow conical in shape and bright red in skin color. Fruit size is small with weight of 200~240g on an average and fruits have 14ºBx soluble solid and medium acidity. It is moderately susceptible to alternaria leaf spot (Alternaria alternata). "Wonkyo Ga-Dangwagi 1" is a promising apple cultivar and will appeal to young people with good sugar-acid balance.
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從業員 스톡옵션 報償의 決定要因에 관한 연구-코스닥 벤처기업을 중심으로-
허성,지성권 한국회계정보학회 2007 회계정보연구 Vol.25 No.1
The purpose of this study is to investigate what are the economic and non-economic determinants of stock option compensation granted to employees(non-executive employees). The stock option compensation granted to the employees is an increasing function of the complexity of organization structure and the degree of decentralization of decision making(1). The stock option compensation granted to the employees increases as the investment opportunity set gets larger(2), effective tax rate gets higher(3), borrowing cost of capital increases(4), cash flow shortage gets serious(5), stock return of the firm increases(6). As the variance of stock return increases, the stock option compensation granted to the employees decreases(7).The first and second hypotheses are to test the relationship between employee stock option grants and the measurement difficulty of effort exerted by employees. The third, fourth and fifth hypotheses are to investigate what are the relationship between employee stock option grants and the resource constraints of the firms. The sixth hypothesis is to test whether or not the relative costs of stock option compensation as compared to cash compensation determines the grant of employee stock option. The seventh hypothesis is to test whether or not the relative contribution of employees to the firm value as compared to managers determines the grant of employee stock option. We used four different measures for the dependent variable. The results support second, fourth, fifth, sixth, and seventh hypothesis. 우리나라에 스톡옵션 제도가 도입된 후, 경영자를 대상으로 한 스톡옵션 보상에 대하여는 연구가 있었으나, 종업원을 대상으로 한 연구는 전무한 실정이다. 이것은 스톡옵션을 종업원 보상으로 사용하는 기업이 많지 않기 때문이기도 하며, 주식관련 보상이라는 특성상 종업원 보다는 경영자 보상으로서의 성격이 강하기 때문이기도 하다. 그러나 벤처기업에서는 스톡옵션을 종업원 보상의 한 방법으로 많이 사용하며, 많은 벤처기업이 스톡옵션 보상을 사용하는 추세이다. 본 논문은 코스닥에 상장되어 있는 벤처기업을 대상으로 종업원 스톡옵션 보상을 결정하는 경제적, 비경제적 결정요인이 무엇인지를 규명했다. 독립변수로는 투입노력측정의 난이도, 유동성제약을 해결하기 위한 방법, 보상의 상대적 비용, 그리고 종업원 투입 노력이 미래 기업가치 증대에 공헌하는 상대적 공헌도와 관련된 요인들이 종업원 스톡옵션 보상에 어떠한 영향을 미치는 지를 분석하였다. 종속변수로는 총발행주식수 대비 스톡옵션수의 비율, 종업원 1인당 스톡옵션주식 수, 전체 스톡옵션 대비 종업원 스톡옵션 비율 그리고 블랙-숄즈 가치이다.연구 결과에 따르면 분권화가 잘 되어 있으면 전체 스톡옵션 중 종업원 스톡옵션의 비중이 커진다. 성장성이 높으면 종업원 1인당 스톡옵션의 수가 많아진다. 외부의 자금 조달 비용이 높아지거나 유동성에 제약이 있으면 모든 종속변수에서 유의적인 관련성을 보였다. 주식수익률이 높으면 종업원 1인당 스톡옵션의 수도 많아지며, 전체 스톡옵션 중 종업원 스톡옵션의 비중도 커진다. 주식가경의 변동성이 높아지면 종업원 1인당 스톡옵션의 수가 증가한다. 이상의 연구결과에서 보면 종업원을 위한 스톡옵션 보상은 기업이 처한 유동성제약을 해결하고, 상대적으로 적은 비용으로 큰 보상을 하기 위한 방법으로 사용되었음을 알 수 있다.
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Rapid real-time detection method of ACLSV and ASSVd for apple quarantine field
허성,정용석 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.2
Apples are produced using a high-density plantation system using M.9 rootstock in Korea. However, the virus infection rate of apples tends to be high because the rootstocks produced from virus-infected mother stocks were widely used and vegeta�tive propagation based on the grafting is common with scion cultivars. The most efective way to control plant virus and viroid depends on conducting a massively rapid and precise diagnostic inspection. Therefore, this study aims to develop a real-time PCR assay that can be precisely and inexpensively tested for ACLSV and ASSVd. To expand the detection range, we developed a singleplex real-time PCR method targeting the conserved region of ACLSV and ASSVd, respectively. The detection methods using two kinds of fuorescent chemical dye, SYBR Green I and TaqMan probe, have been developed in this study. Comparing these methods developed with two dyes, the assay using SYBR Green I was efcient for detection as much as the method using TaqMan probe and faster. The feld test demonstrated real-time detecting methods developed using SYBR Green I dye were applicable to reliable diagnosis and quantifcation for virus and viroid in quarantine felds.
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