• 한국유기농업학회지
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• 제19권spc호
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• pp.1-5
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• 2011

A new powdery mildew resistant squash (Cucurbita moschata Duch.) 'Miso' was bred from a cross between powdery mildew resistant true variety 'Sangol' and powdery mildew susceptible inbred line 'Seoulmadi' at National Institute of Horticultural & Herbal Science (NIHHS). The 'Miso' variety was vigorous and highly resistant to powdery mildew. It showed white green fruit color. The variety yielded 21.3MT/ha which is 52% more than control variety.

• 한국응용곤충학회지
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• 제9권1호
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• pp.15-20
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• 1970

수도품종명 도열병 저항성 차이와 도체내 성분과의 관계를 구명코저 저항성 품종, 중간정도 품종, 감수성인 품종의 실소 및 당 함량을 비교한 결과를 요약하면 다음과 같다. 1) 전질소, 전당 함량은 저항성인 품종이 감수성인 품종에 비해 전질소는 적고 전당은 많았다. 따라서 C/N 률은 저항성 품종이 감수성인 품종에 비해 높았다. 2) Free amino acid에 있어서는 저항성인 품종이 감수성인 품종에 비해 Glutamine, Valine 그리고 Leucine 과 Iso-leucine함량이 많았다. 3) 각종당액에서 전분합성은 저항성인 품종이 감수성인 품종에 비해 Fructose, Glucose에서는 높았고 Sucrose에서는 낮았으나 Indica type로 저항성인 Zenith에서는 오히려 전분합성이 감수성인 다다조 보다 떨어졌다. 4) 질소비료를 증시하면 전질소함량은 보비보다 증가하는데 그 증가율은 저항성인 품종에서 낮은 경향이었다. 전당은 분벽초기에 감소되며 그 감소율은 저항성인 품종이 더 떨어졌고 분벽최성기에는 오히려 증가하였는데 그 증가율은 저항성인 품종이 높은 경향이었다.

• International Journal of Industrial Entomology and Biomaterials
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• 제13권2호
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• pp.85-95
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• 2006

Seveval Chinese and Japanese varieties with good characters were used in the breeding. After 5 years (15 generations), a pair of robust and high quality silkworm variety with NPV resistance was bred by means of a combination of crossing and pedigree selection complemented by the selection of NPV resistance. The variety was identified jointly nationwide in 2003 and 2004, and appraised by National Mulberry and Silkworm Appraising Committee. Results are as follows: its cocooning rate is over 93%, shell rate 23-25%, filament length 1200-1300 meters, reelability 75-88%, Length of non-broken cocoon filament 900-1100 meters, raw silk rate 17-19%, neatness 95-97 points, and cocoon crop, cocoon shell weight and raw silk weight per 10000 larvae is higher than those of the control variety by 7-10%, 14-19% and 14-18%, respectively. The variety is not only robust, resistant to high temperature and NPV, easy to rear, uniform in hatching, molting and maturing, but also lays more eggs, and its fecundity is high. It is suitable to rear in the Yangtze River Basin, the Yellow River basin and the Pearl River basin of China.

• 한국연초학회지
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• 제6권2호
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• pp.185-189
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• 1984

To classify the inheritance of resistance to potato virus Y, crosses between susceptible flue-cured tobacco variety NC 95 and resistant variety McNair 30 were conducted. The parents, $F_1$ plants, $F_2$ populations, and haploid plants derived from anthers of $F_1$ plants were screened for a resistance of two potato virus Y strains (PVY-VB and PVY-VN) isolated in Korea. The Chi-square values for the $F_3$ populations and haploids of $F_1$ fitted 1 :3 and 1 :1 ratios of resistant to susceptible for two strains, respectively. Therefore, it was found that the resistance of McNair 30 for the potato virus Y was controlled by a single recessive gene. Moreover the resistance to two strains screened was inherited dependently.

• 한국작물학회지
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• 제26권4호
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• pp.324-331
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• 1981

대두 씨스트 선충포에 있어서 대두 품종별 선충저항성정도를 검정하여 내선충성 대두 품종육성시 기초자료로 삼고져 본 시험을 실시하였던 바 그 결과를 요약하면 다음과 같다. 1. 지표품종에 대한 평균 종실중 감소율은 저항성 품종은 38\sim44%, 감수성 품종은 6972%로 차리가 뚜렷하였으며 전중 및 협수도 같은 경향이었다. 2. 공시된 품종중 저항성정도가 $\ulcorner$최강$\lrcorner$인 품종은 5, $\ulcorner$강$\lrcorner$에 속하는 것이 8품종으로써 이를은 모두 중ㆍ만생종이었다. 저항성 품종으로 유망시 되는 것으로는 울산, 강림, pickett 71, Forrest, Bedford 등이었다. 3. 선충포에 있어서 종실중, 전중 및 협수의 감소율을 조생종을 62\sim75%, 중생종은 39\sim65%, 만생종은 29\sim36%로써 생육일수가 짧은 품종일수록 저항성이 약하게 나타났다. 이 원인으로서는 선충의 분포범위와 대두 뿌리의 발생심도 및 발생량, 가해시기와 대두의 개화기 및 회복가능기간이 밀접히 관여하고 있는 것으로 고찰되었다. 4. 내선충성 품종선파을 위한 유의 상관 형질은 전중, 협수, 100입중, 주전장이었으며 특히 전종과 협수는 모두 +0.9 이상의 고도의 상관계수를 보였다.

• 한국응용곤충학회지
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• 제11권1호
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• pp.41-43
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• 1972

1) 수도 도열병에 저항성이었던 관옥 품종이 1969년에 와서 저항성이 역전된 원인을 분석하였다. 2) 경기도지방 16개 지역의 이병된 관옥품종에서 분리한 균주는 15개의 C계통 레이스와 1개의 N계통 레이스로 판정되었다. C계통 레이스 중에는 C-8이 9균주, C-7과 C-1이 각각 2균주, 그 나머지는 C-1과 유사한 것이 1균주이고 C-5와 유사한 것이 1균주였다. 3) 도열병에 대하여 고도로 저항성이었던 관옥품종은 중국계통의 벼를 침해 한 수 있는 C레이스의 만연에 기인되었다고 결론지을 수 있다.

• 한국작물학회지
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• 제57권4호
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• pp.365-372
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• 2012

Native of soybean aphid (Aphis glycines Matsumura) is an Asia and aphid is one of the dangerous pests in soybean [Glycine max (L.) Merr.]. High density aphid populations can reduce crop production by causing severe damage. The objective of this study was evaluation of resistance to the soybean aphid in soybean cultivars and germplasms. A total of fifty five soybean cultivars or germplasms, including two susceptible and two resistant check varieties, were infested to evaluate their resistance in the field cage and greenhouse test by aphid colonies which derived from wild collected one soybean aphid biotype in Korea. The average number of reproduced soybean aphid was evaluated with 62.7 aphids in the resistant check variety PI 567598B and also estimated with 1,807 aphids for susceptible check variety Williams 82. In soybean varieties and germplasms, the average reproduced soybean aphid populations ranged from the lowest 497 aphids for Junjeori to the highest 3,862 aphids for Mansu. About seventy six percent of soybean cultivars and germplasms were shown high density soybean aphid populations when compared with another susceptible check variety PI 567543C in the field cage test. From the greenhouse test to evaluate aphid index, 87.3% of soybean cultivars or germplasms presented aphid index with 9.0. No soybean cultivars and germplasms were observed with soybean resistant phenotype when regarded a aphid resistant level as less than 10% aphid reproductions compared with susceptible check Williams 82. Although no Korean soybean cultivars were identified with resistant trait to the soybean aphid, we found one great resistant genetic resource PI 567598B in this study. This result will be helpful to further study for providing useful genetic information for soybean researchers.

• International Journal of Industrial Entomology and Biomaterials
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• 제37권2호
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• pp.55-62
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• 2018

We bred a mulberry cultivar named 'Saealchan' through local adaptability test, which is under registration as a new cultivar for fruit production. Local adaptability test had been carried out at four local places (Jeonju, Gongju, Jangseong, and Sangju) for five years from 2013. This variety 'Saealchan' belongs to Morus alba L. selected from seedlings collected from mother mulberry 'Shimheung'. Saealchan was resistant to popcorn disease and high yielding variety in fruit productivity by 194% compared to control cultivar 'Shimheung (Morus alba L.)' for three years. Although fruits of 'Saealchan' was smaller in size and lower in sugar content of mulberry fruits compared to control variety 'Shimheung', it showed strong resistance to sclerotial disease compared to 'Shimheung'.

• International Journal of Industrial Entomology and Biomaterials
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• 제13권1호
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• pp.1-5
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• 2006

The major dominant fluoride-endurance (Dfe) gene was introduced into the commercial varieties by crossing and pedigree selection to breed silkworm races that could normally develop in the area that polluted by fluoride. After backcrossed for two generations, the Dfe gene was made homozygous, and individuals with good economic characters were selected to generate next generation. After 8 generations of selection, their characters became stable, and the silkworm variety which is resistant to fluoride, Huayuan${\times}$Dongsheng, for spring rearing were bred.

• 한국응용곤충학회지
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• 제16권4호
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• pp.235-239
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• 1977

선발에 의하여 얻은 벼 흰빛잎마름병균 Xanthomonas oryzae의 Streptomycin 내성균에 대하여 병원성, 배지내에서의 생장량 및 자외선 감수성에 대한 변이성을 조사하여 다음과 같은 결과를 얻었다. (1) SM 내성균은 Wase-Aikoku-3, Rant Emas-2 황옥 및 Kimmase의 4개 판별품종에 대한 병원성 비교에서 75-6의 내성균주가 황옥에 대하여 감수성 반응이 모균과 달리 중정도의 저항성을 나타내었다. 2) SM-내성균은 정상배지에서 모균보다 약간 높은 생장량을 보였고 100ug/ml Agrepto 첨가 배지에서는 접종후 60시간까지 생장이 조지되었으나 70시간 이후에는 모균의 생장량을 능가하였다. (3) SM-내성균은 254mu 파장의 자외선 조사에서 모균과 동일한 감수성을 나타내어 내성인자는 안정된 것으로 생각되었다.