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임주성,서상기,김미옥,천충기,박영은,조지홍,조광수,장동칠,최장규,이종남,구본철 한국국제농업개발학회 2018 韓國國際農業開發學會誌 Vol.30 No.3
Potato cultivation area in Kazakhstan has been steadily increasing for ten years from 154,000 ha in 2006 to 186,000 ha in 2016. The production amounts are also increasing from 2,360,000 tons in 2006 to 3,550,000 tons in 2016. The average yield(/ha) was 19.0 ton in 2016 while 15.4 tons in 2006. The import volume increased by about 3.2 folds for seven years from 34,874 tons in 2006 to 112,323 tons in 2013. The import price(/ton) has been also showing steady increasing from $180(USD) in 2006 to $202(USD) in 2013. The export volume dramatically increased from 73 tons in 2006 to 8,455 tons in 2013. It shows that the potato trade with neighboring countries is very active recently. Kazakhstan need seed potato of around 700,000 tons each year, which is more than the total production yield (600,000 tons/ year) of Korean potato. Seed potatoes are imported from Europe by the private seed companies and then distributed to farmers after multiplications for two or three years. Potatoes are sown in May and harvested in September or October, which is similar to the summer cropping in Korean potato. The European cultivars such as ‘Sante’ and ‘Rodeo’ are preferred broadly due to their high temperature resistance, salt tolerance, long dormancy period, and yellow flesh color. Meanwhile, Early blight and Colorado potato beetle are known as the main problems at Kazakhstan potato fields. The big yield loss by insects or diseases during storage is one of the severe problems too. Considering the internal and external circumstances of Kazakhstan potato, it is expected that the Korea's high-quality seed potatoes and the post-harvest management technologies could be helpful to enter the Kazakhstan potato market effectively as well as to increase the market competitiveness.
SCaM4 과발현 형질전환 감자의 농업적 특성 및 감자 무름병 저항성 평가
손황배,조광수,조지홍,권오근,천충기,최지경,이신우,정우식 한국식물생명공학회 2012 식물생명공학회지 Vol.39 No.4
We performed in vitro assay and field trials to assess levels of changes in intrinsic properties and resistance against soft rot of the potato cv. Dejima upon the introduction of a soybean calmodulin 4 gene (SCaM4). Field trials with four lines overexpressing SCaM4 gene were conducted over two seasons, and harvested tubers were evaluated in bioassay for resistance to Pectobacterium carotovorum ssp. carotovorum. The SCaM4 transgenic potato lines inoculated with 108CFU/ml of P. carotovorum ssp. carotovorum showed enhanced resistance compared to control. Among the SCaM4 transgenic lines, the transgenic line SCaM4-4 exhibited the highest tolerance to soft rot in vitro assays, so did in field trials. In the field trial, the soft rot resistance of SCaM4-4 line was more than 5 times higher compared to that of control cultivar,Dejima. The major agronomic characteristics of the SCaM4transgenic lines were not different from those of the nontransgenic ‘Dejima’. The result demonstrated that the transformation of a calmodulin 4 gene was a successful strategy in development of potato cultivar enhanced to soft rot. SCaM4 과발현 감자의 무름병에 대한 저항성은 대비 품종인 ‘대지’에 비해 실내・외 검정에서 저항성인 것으로나타났으며, SCaM4 과발현 SCaM4-4 계통의 경우 실내·외에서 무름병 저항성이 강하였다. SCaM4 과발현 형질전환 감자 계통들에 대한 포장 검정 결과 공시된 4 계통은 꽃색, 줄기형 등에서 대조품종인 대지와 차이가 없었다. 괴경특성 및 수량성의 경우 주당 괴경수는 유사했으나 과발현체의 경우 줄기 무름병 저항성으로 동화산물의생성 및 집적이 원활하여 괴경 무게 증가하여 수량이 증가하는 경향성을 보였다. 실내외검정에서 무름병에 강한저항성을 보인 SCaM4-4 라인은 대조품종인 대지와 실질적인 동등성을 확인할 수 있어 향후 식품학적 안전성과환경위해성 평가가 이루어진다면 실용화 가능성이 클 것으로 사료된다.