친연계수를 이용한 벼 장려품종의 분류

정승근,정종욱 한국작물학회 2000 한국작물학회 학술발표대회 논문집 Vol.2000 No.1

친연계수에 의한 쌀보리 품종의 유전적 다양성

정승근,박문웅 한국육종학회 2000 한국육종학회지 Vol.32 No.4

육성계보와 친연계수 분석에 의한 콩 육성품종간의 유전적 관계

정승근,김홍식,손석용,박상일,홍은희,김석동,이영호 한국작물학회 2000 한국작물학회 학술발표대회 논문집 Vol.2000 No.1

시판 소포장 보리쌀의 품위 평가

정승근,배숙현,김홍식 한국작물학회 2009 한국작물학회지 Vol.54 No.1

Demand for the high quality barley with fibroid material and functional substances has been increasing in recent although the amount of barley consumption decreased drastically during the last two decades. But the limited information on quality of barley makes consumers hard when they purchase barley for their own consumption. Therefore, 51 brand barley, .i.e., 28 naked barley and 23 waxy barley from supermarkets and 10 polished barley from local markets were collected, and their external quality were analyzed to provide basic information on brand barley. Among 51 brand barley, 56% were 1kg package and 25% were 800 g package and there was no significant difference (1±3.62 g) between printed and actual weighs. The weight of 1,000 grains of naked barley and waxy barley ranged 18.6~26.7 g and 14.6~24.7 g, respectively. Thousand grain weight of 38% of naked barley ranged 20~22 g, while that of 43% of waxy barley ranged 18~20 g. The ratio of normal grains was 88% and 94% for naked barley and waxy barley, respectively, when separated with 1.7 mm sieve. Although 82% of brand barley products were free from foreign substances, in 18% of brand barley products, sands, pieces of cloth and wood, other kinds of grain and insect larvae were found, Average test weight of brand barleys was 843 g・L-1 with range of 805~917 g・L-1. Water content was less than 14% in 7.8% of barley products, while it was 14~15% in 62.7% of them. Average whiteness of brand barley was 31.06, while waxy barley had higher whiteness with 27.28 than naked barley with 34.16. Heated water uptake rate of milled naked barley and milled waxy barley were 215.4% and 231.7%, respectively, while expansion rate of milled naked barley and milled waxy barley were 379.7% and 401.6%, respectively. Barley from local markets were as good as brand barley products in 1,000 grain weight, ratio of normal grains, inclusion of foreign substances, test weight, water content, whiteness, water uptake rate, and expansion rate, but they showed higher ratio of foreign substances included.

한국작물학회를 INTERNET의 세계로 : 한국작물학회의 Home page

정승근 한국작물학회 1996 한국작물학회 학술발표대회 논문집 Vol.1996 No.1

옥수수의 生育期間 豫測을 위한 Growing Degree Days의 計算方法

정승근,이석순,박근용 한국작물학회 1986 한국작물학회지 Vol.31 No.2

잡곡 및 사료 생산 수급전망과 대책

정승근 한국작물학회 1998 한국작물학회 학술발표대회 논문집 Vol.1998 No.-

Environmental conditions and expected profit are the major criteria to select crops to be cultivated in any region. Traditionally, miscellaneous crops have been cultivated as alternative crop in case of unfavorable climate or supplementary crop in marginal lands. Since the successful breeding of high yielding varieties of staple crops and development of cultural techniques in 1970s in Korea, production of miscellaneous crops decreased markedly due to the rapid commercialization of agriculture and increased productions of horticultural crops, although yields have been doubled during the last 2~3 decades. On the other hand, animal husbandry has been developing remarkably parallel with national economic development and the increased consumption of animal products. As a result, imports of feed grains such as corn have increased rapidly, while roughage production became lower than demand. Among miscellaneous crops, corn production increased markedly through the development of hybrids and due to its importance as silage crops. Acreage of corn production including grains, fresh corns and feeding is about 120,000 ha, while acreage of buckwheat is about 5,000 ha and those of other miscellaneous crops decreased to a level of about 1,000 ha. Although miscellaneous crops have low yield potential and are unprofitable due to low price and imports of cheap foreign products, they should be kept to cultivate. Miscellaneous crops are important components that maintain diversity among upland crops as well as alternative crops in case of unfavorable climate. The low yield potential of miscellaneous crops might be due to lack of efforts to breed high yielding varieties and to develope cultural techniques. Continuous investment in research, exploitation of new utilization for miscellaneous crops as sustainable crop, honey crop and sightseeing crop, and development of healthy and special foods will promote their cultivation. Animal feeding in Korea depends mainly on formula feeds. As the number of animals increases to meet demand of animal products, there is no alternative way but to import grains to feed them. But roughage production, which is necessary for normal growth of ruminant animals, should be increased. However, lack of arable land and pasture land limits the production of good roughages. It is estimated that number of course for meat and milk production will be 2.5~2.6 million and total of 6.2~7.5 million tons of roughages should be produced. This implies that more than 1 million tons of roughage are needed, although pasture land, upland for forage crops, forage crops after rice cultivation and rice straw are utilized. Therefore, new reclamation of pasture land, increased roughage production in cultivating land, increased cultivation of forage crops after rice, more utilization of rice straw and active exploration of indigenous plant species as roughage resources should be promoted

콩 품종간의 상호접목이 생육과 수량에 미치는 영향

鄭丞根,孫錫龍,許成秀 韓國作物學會 1992 한국작물학회지 Vol.37 No.4

콩 품종간의 상호접목을 통하여 지상부와 지하부의 능력을 비교하여 콩품종개량이나 재배법 개선의 기초자료를 제공하고자 황금콩, 팔달콩, 보광콩 및 장경콩을 공시하여 자가접목 및 품종간 상호접목을 하여 이식재배한 결과를 요약하면 다음과 같다. 1. 보광콩의 초장이 106.3-109.8cm로 가장 컸으며 팔달콩이 68.6-70.3cm로 제일 작았는데, 접목에 의하여 초장이 감소되기는 하였지만 대목의 영향은 인정되지 않았다. 2. 엽수는 팔달콩이 9.6-9.8매로 가장 적었으며, 장경콩이 14.2-15.3매로 제일 많았는데 처리간의 차이는 없었다. 3. 개화일수는 접목에 의하여 2-4일 지연되어 유의한 차이를 보였는데, 황금콩과 팔달콩은 자가접목보다는 상호접목에서 지연정도가 켰으나 보광콩과 장경콩은 상호접목보다는 자가접목에서 지연정도가 더 커서 품종간에 접목에 대한 반응이 다른 것으로 나타났다. 4. 부위별 건물중에 대한 접목의 영향도 품종간에 유의한 차이를 보여 황금콩과 팔달콩에서는 엽중에 대한 접목의 영향이 인정되었고, 보광콩과 장경콩의 상호접목에서도 장경콩이 보광콩의 부위별 건물중을 유의하게 감소시킨 것으로 나타났다. 5. 경태는 접목에 의하여 증가하였으며, 분지수는 감소하였고, 보광콩은 접목에 의하여 증중이 감소하였다. 6. 수양은 자가접목이 비접목에 비하여 11%, 상호접목은 자가접목에 비하여 14%그리고 상호접목은 비접목에 비하여 24% 감소하였으며, 경중은 수양과 같은 경향이었으나 접목에 의한 감소가 29-32%로 정도가 수량에 비하여 더 켰으나 자가접목과 상호접목간의 차이는 거의 없었다. 7 .수확지수는 접목에 의하여 황금콩과 장경콩은 1.4-6.1% 그리고 팔달콩과 보광콩은 4.4-8.6% 높아졌다. 8. 접목하였을 때의 수양이나 경중은 대목보다는 접수로 사용된 품종의 유전적 특성에 의하여 좌우되었으며, 품종과 특성에 따라서 접목에 대한 반응의 차이가 인정되었다.이었다. 콩 수량 예측값은 160.4kg /10a였다. 6. 진주 지역의 기상 요소 반응에 따른 1차 효과는 6월과 8월강우, 교호작용은 8월의기온과 일조시수, 6월일조시수와 7월강우, 6, 8월강우였다. 6, 8월강우는 linear term에서 부효과, 8월의 기온과 일조시수는 부교호작용이었다. 콩 수량 예측 평균값은 208.0kg /10a였다. 7. 춘천, 수원, 광주, 진주 지역의 모형식에 선정된 년차변이(YR)는 기술 개선 요인(technological improvement factors)으로 인정된다.다.기는 F1 이 양친의 중간을 보였고, BC1 과 BC2 는 양친의 영향을 보였으며, F2 는 만숙친 보다도 늦었다. 간장은 F1 이 장간친과 비슷 하였으나 F2 , BC1 , BC2 는 단간친보다 작았고 특히 BC1 은 단간친보다 35cm나 짧았다. 수장과 수당 소수수는 F1 이 양친보다 길거나 많았다. 소수당 영화수는 양친의 영향을 크게 받았다. 보였다. Hydrocarbon류는 품종과 생육시기에 관계없이 탄소수가 홀수인 물질이었으며 주로 C29와 C31이었다. 방법을 이용한 Bard 알고리즘을 사용하였다. 서울 구로구 시흥동 산사태 발생 지역의 산사면에 대하여 개발된 모델을 적용하여 예제 해석을 수행함으로써, 지하수 흐름 모델이 산사태 발생 예측을 위하여 이용할 수 있음을 입증하였다. 또한, 매개변수분석 연구를 통하여, 변수 a값은 작은 변화에 대하여 목적함수값에 큰 변화를 일으키므로 a의 값에 대한 최적값을 구하는 것이 가장 중요한 요소라는 결론을 얻었다. 알고리즘(Simultaneous Solution Algorithm)을 제의하였다. 제의 Self-and reciprocal-graftings were made between soybean varieties(cv.Hwangkeumkong, Paldalkong, Bokwangkong and Jangkyongkong) to assertain the relative role of shoot and root in soybean growth and yield determination. The influence of grafting per se on plant height and leaf number on main stem were negligible as evidenced by the insignificant differences between self-and reciprocal-graftings. The effect of grafting on flowering was different between different set of varieties grafted reciprocally. Self grafting delayed flowering 2 days and reciprocal grafting delayed another 2 days, in general. The effects of grafting on dry weights of different plant parts except pod were also insignificant. Reciprocal grafting increased pod dry weight in Hwangkeumkong and Paldalkong regardless whether they were used as scion or stock. Reciporcal grafting also influenced dry weights of Bokwangkong and Jangkyongkong significantly, but the response was different from those of Hwangkeumkong or Paldalkong. Jangkyongkong, when used as stock, decreased total dry weight of Bokwangkong significantly through the reduction of pod and stem dry weights. Stem diameter was increased by grafting, however, grafting decreased number of branches in all varieties. The average yields of self-and reciprocal-grafting were decreased by 11% and 24%, respectively, comparing to that of non-grafting, while average yield of reciprocal grafting was 14% lower than that of self grafting. Stem weight of grafted soybeans was decreased by 29-32% comparing to that of non-grafted soybeans, but the difference between self and reciprocal graftings was negligible. The genetic characteristics of scion was found to be more important than those of stock in determination of yield and stem weight. It was also indicated that varieties and characteristics are different in response to grafting.

Genetic Base of Korean Soybean Varieties Released from 1913 to 2002

정승근,김홍식,우선희,이영호 한국육종학회 2004 한국육종학회지 Vol.36 No.2

The genetic base was defined as the ancestral pool from which crop varieties were derived, and was used to characterize genetic diversity in crop breeding. Number of primary parents used between 1913 and 2002 in Korean soybean breeding programs was 65 and has been increased since 1950. The major genetic base of soybean varieties developed in Korea consisted of American introductions (52.2%), Japanese introductions (26.5%) and Korean local lines (21.3%). Recently, the contribution of Japanese introductions has been decreased, while that of Korean local lines has been increased as the diversification of soybean varieties was emphasized. The number of primary parents which contributed 50~80% of genetic base in soybean varieties increased and the resulted greater genetic diversity in recent years. The average number of primary parents per variety and average number of primary parent per pedigree of a variety increased from 0.79 and 1.4 before 1970 to 2.60 and 6.6 after 2000, respectively. While the genetic contribution of 20 primary parents to 97 Korean soybean varieties developed since 1913 was 51.4%, that of six primary parents, (Essex, Backmokjangyeup, Yukoo 3, Elf, Hill, and Jangdanbaekmok) was 24.1%. Yukoo 3 was the primary parent which used to develop 37 varieties, followed by Jangdanbaekmok, Backmokjangyeup, and Miyakishirome which contributed genetically to 35, 28, and 22 varieties, respectively. However, the degree of genetic contribution of the major six primary parents has been decreased in terms of per parent and accumulated contribution as more germplasms introduced in soybean breeding programs.

콩 육성품종의 유전적 다양성과 교배친의 상대기여도

정승근,김홍식,손석용,김석동,홍은희 한국작물학회 1997 한국작물학회 학술발표대회 논문집 Vol.1997 No.2