위암발증 원인을 밝히기 위하여 농촌지역 일반 주민들의 Helicobater pylori의 감염율과 생활습관 및 영양섭취 상태와의 상관관계를 검토하기 위하여 강원도 춘천시 인근 농촌 지역 주민들을 조사하였다. 조사 대상자는 40대 이상인 지역 주민 183 명으로 남자 81명, 여자 102명에 대하여 설문조사와 식사량 조사, 혈액 생화학적 분석 및 혈청 ELISA법에 의한 Helicobater pylori의 감염 정도를 분석하였다. 그 결과를 요약하면 다음과 같다. 1. 조사 대상자의 학력은 74.3%가 국졸이하였고, 월수입은 80.3%가 100만원 이하였다. 2. 조사 대상자의 직업은 75.3%가 농업에 종사하였으며, 가족형태는 62.8%가 핵가족이었다. 3. 출산 자녀수는 75.9%가 2명에서 5명의 자녀를 출산하였고, 음주자는 46.4%이며 매일 술을 마시는 사람이 12%였다. 흡연자는 21.9%였으며, 비흡연자는 78.1%였다. 4. 평균신장은 157.4㎝였고 여자의 평균 신장은 151.9㎝, 남자의 평균 신장은 164.4㎝였고 남녀간에 유의차가 있었다(p<0.001). 5. Helicobater pylori의 감염율은 총 조사대상자중 64.5%였으며, 남자가 65.4 %, 여자가 63.7 %였다. 감염율은 흡연자, 학력 수준이 낮을수록, 월수입이 적을수록, 출산 자녀수가 많을수록, 50대의 연령에서 많은 것으로 나타났다. 6. Helicobater pylori의 감염 음성자와 양성자 간의 영양소 섭취실태를 보면 음성자가 에너지, 총지질(p<0.05), 동물성 지질(p<0.05), 철분 섭취량(p<0.001), 비타민 A의 섭취량(p<0.01), 비타민 C 섭취량(p<0.05)에 있어서 유의적으로 높은 섭취량을 나타내었다. 그러나 칼슘 섭취량은 음성 인자가 낮았다.

A single cross, Jangdaok, is an yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2003. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN)

Chalok3, a new waxy corn hybrid was developed at the National Crop Experiment Station, RDA in 2001. It is a single cross hybrid, which was crossed between KW35 as a seed parent and KW7 as a pollen parent. Chalok3 was 73 days in days to silking and eight d

Sinchalok, a new waxy corn hybrid was developed from the cross between two inbred lines KW36 as a seed parent and KW1 as a pollen parent at the National Crop Experiment Station, RDA in 2001. Sinchalok was 66 days in days to silking and early maturity hybr

Danok3, a sweet corn hybrid that matures early was developed by the corn breeding team at the National Crop Experiment Station (NCES), RDA in 2001. Inbred KSS2 derived from Golden Bantam was used as the seed parent of Danok3, and inbred KSS22 derived from

A single cross, Pungmiok is yellow dent hybrid maize (Zea mays L.) developed by the corn breeding team at the National Crop Experiment Station (NCES), RDA in 2002. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN), is mad

A single cross, Cheonganok, is a yellow semi-flint hybrid maize (Zea mays L.) developed by the corn breeding team at the National Crop Experiment Station (NCES), RDA in 2002. This hybrid, which has a high yield of dry matter, total digestible nutrients (T

Kwanganbyeo is a japonica rice variety developed from the cross between Namyang 7 and SR14779-HB234-31, anelite line derived from the cross between Cheonmabyeo and Aichi 37 at the National Crop Experiment Station, RDA, and washi-tecture and light-dark gre

A total of 1,830 soybean collections were grown in the field and characterized for 10 morphological traits to determine the diversity and relationship within and among geographical regions. Phenotypic variation was found within all regions for most characters. The Shannon-Weaver diversity index ranged from 0.49 to 0.62 across regions, and 0.09 to 1.00 across characters. Canonical discriminant analysis and clustering of the canonical means delineated 3 regional clusters: (ⅰ) Kyunggi, Chungchong, Kangwon, Chulla, and Kyungsang; (ⅱ) Heilongjiang; and (ⅲ) Jilin, Manchuria, central China, south China, Others (China), Hokkaido, Honshu, and Others (Japan).

The experiment was carried out to study the variations and geographical distribution of β -amylase isozyme by isoelectric focusing (IEF) within Korean, Chinese and Japanese soybean land races. In pH 3-10 gel of IEF, the amylase of soybean accessions was separated into low pI group isozymes (TEX>Sp1 b) and high pI group isozymes(Sp1 a). In pH4-6.5 gel, isoelectric points were at 5.07, 5.15, 5.25, 5.40, and 5.94, and h, j, and k bands also were found. The distribution of Sp1 a allele (high pI type) was 29.3% in soybean accessions from Korea, 10.1 % in those from China, and 6.9% in Japanese accessions. The percentage of Sp1 a) allele was the highest in soybean accessions from Kyungsang province (35 %) in Korea, then central China (32 %) in China, and Honshu (10%) in Japan