http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
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.
鄭丞根 충북대학교 농업과학기술연구소 1986 農業科學硏究 Vol.4 No.-
The rapid, nondestructive, and relatively accurate measurement of azuki bean (Vigna angularis (Wild.) Ohwi & Ohashi) leaf area for physiological and agronomic studies is important. The purpose of this study was to develop prediction equations for estimating leaflet and trifoliolate areas of azuki beans. Regression analysis of measurements of leaf length and width of 5 azuki bean collections were compared for the predictive abilities of regression equations and leaf factors, each involving a different independent variable. Prediction equations derived from independent variables involving measurements of length and width were superior at leaflet and trifoliolate levels to those involving measurement of only length or width. However, leaf area could be estimated with little loss of predictive ability by measuring only width for both leaflet and trifoliolate. In a conclusion, terminal leaflet area of azuki beans could be estimated by the following equations : A=0.613LW, A=3.851+7.544LW or A=1.765+0.730W2, side leaflet area : A=0.668LW, A=1.551+0.625LW or A=2.782+0.725 W2, and trifoliolate area : AT=5.532+1.086(∑ LiWi ) or AT=10.726+0.838(∑Wi2).
鄭丞根,金洪殷,李喆求,李明煥 충북대학교 농업과학기술연구소 1989 農業科學硏究 Vol.7 No.2
This experiment was conducted to screen useful herbicides for Populus euramericana Gainer nur-sery at the Chungbuk Forestry Experiment Station in 1988. Soil surface treatment of 11 herbicides was made on May 19 after planting Populus euraneicana G. cuttings. Digitaria sanguinalis(L.) Scopp, Chenopodium album var. centrorubrum Makino, Portulaca oleracea L., Eleusine indica(L.) Gaertner and Echinochloa crusagali (L.) Beauv. var. praticola Ohwi were dominant weeds in the nursery. Among herbicides tested, alachlor G, alachlor+pendimethalin G, Metolachlor+prometryn EC and oxyfluorfen EC were effective to control both grasses and broad-leaf weeds effectively, but the falter two chemicals resulted in severe damage to Populus euramericana. The growth of cuttings measured by basal diameter and height showed no significant difference among treatments and he-rbicides except oxyfluorfen. Significant correlations were observed between weed coverage 2 weeks after herbicide treatment and number of weeds 1 month and 3 months after herbicide treatment. Also, number of weeds after 1 month was significantly correlated with that of 3 months after herbicide treatment.