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Wan Sik Ahn(安完植),Jong Yol Choi(崔鍾烈),Woong Jik Lee(李雄植) 한국육종학회 1987 한국육종학회지 Vol.19 No.1
The characteristics of BC₃F₁ and their successive generations of inter-generic hybrid between barley (H. vulgare L.) var. Manker 16(M16) and Wheat (T. aestivum L.) var. Chinese Spring(CS) were investigated. Some spikes in BC₃F₂ developed awns 0.7-3.5cm long. Some of the segregants in BC₃F₂ were much earlier in heading date than the parent. Some of the plants in BC₃F₃ were 2 weeks earlier in heading than Manker 16. It was reported that the more barley chromosomes the hybrids in BC₂F₁ have the higher resistance to rust (P.g.t) was resulted. Much variations in stem height were also noticed. It was inferred as an analogous introgression that was produced by the without visible chromosome translocations from barley to wheat.
Wan Sik Ahn(安完植),Yung Pyo Hong(洪永杓),In Song Han(韓仁松),Gun Yang Huh(許建亮),Yang Ho Kang(姜良昊) 한국육종학회 1991 한국육종학회지 Vol.23 No.4
A exploration mission was carried out in the Ulreung island which is located at the middle of the East Sea in Korean peninsular for conserving and utilizing useful plants as promising germplasms. The focus of this mission was collecting wild flowers and ornamental plants. Due to natural isolation of the island from the Korean peninsular, it was proven the flora of the island to be particular. Totally, 31 families, 45 genera and 49 species were collected, such as 7 samples of wild flowers, 4 flowering trees, 6 garden trees, 7 medicinal plants, 3 edible plants, 6 specific indigenous plants of the island and 3 species of the cultivated plants as well.
Wan Sik Ahn(安完植),Jong Woong Ahn(安鍾雄) 한국육종학회 1992 한국육종학회지 Vol.24 No.2
The exploring mission to collect wild soybean and useful plant genetic resources was carried out at the Huksan archipelago of the southwestern part of Korean peninsula during October 28 to November 3, 1990. Totally 31 plants classified into 14 families, 18 genera and 22 species were collected. Among them, 9 collected leguminosae plants including one cultivated kidney bean belonged to 4 genera and 5 species. Useful leguminosae plants collected consisted of Rhynchosia volubilis Lour, R. acuminatifolia Makino, Amphicarpaea edgeworthii var. trisperma Ohwi and Dunbaria villosa (Thunb.) Makino and 8 collected samples belonged to 3 genera and 4 species. R. volubilis Lour at Hongdo island and R. acuminatifolia Makino and D. villosa at Bigeumdo could be collected, repectively, while A. edgeworthii var. trisperma could be observed at any exploring places. It was thought that these results were due to the limitation of place and time collected. Japanese black pine, lentinus chestnut, Camellia japonica, and Machilus thunbergii had been naturally grown from place to place at the part of Huksan county. On the contrary, it has been thought that rare plants as well as wild oriental orchid, locally called “Pungnan” might be endangered and so could be hardly found anywhere to collect. More efforts and supports to conserve nature and resources at a sustainable level should be requested than ever.
대맥의 물질생산에 관한 기초적연구 I. 일정한 온도환경조건하에서 생육한 대맥품종의 생육해석
조장환,안완식,Chang-Hwan Cho,Wan-Sik Ahn 한국작물학회 1976 Korean journal of crop science Vol.21 No.1
To evaluate growth pattern of barley, dry matter productions of two barley varieties with different winter habits were compared under same temperature and day length conditions. 추파성정도가 높은 대맥품종 수원18호(IV)와 춘파성정도가 높은 강보리 (I)에 대하여 주간 2$0^{\circ}C$, 야간 15$^{\circ}C$, 일장 15시간하에서 생육한 경우의 건물생산을 비교검토한 결과는 다음과 같다. 1) 상대생장율(RGR)은 생육이 진전됨에 따라 낮아지고 순동화율(NAR)은 수원18호에서는 상대생장율과 같은 경향을 보였으며 영양생장기간중에는 상대생장율과 순동화율간에는 깊은 관계가 있었다. 2) 생식생장기의 강보리에서는 엽신이외기관의 광합성생산이 중요한 역할을 하고 있었으며 이는 순동화율이나 광합성측정에서 표시할 수 있었다. 3) 생장관수 $\alpha$에 대하여 검토한 결과 강보리에서는 광합성산물이 경쪽으로 급격히 분배가 증대되는 시기가 되면 근쪽으로의 분배가 급격히 감소되었으나 영양생장을 계속하는 수원18호에서는 근으로의 배가 거의 일정한 경향이었다.
Chang Hwan Cho(曺章煥),Wan Sik Ahn(安完植),Jung Hyun Nam(南重鉉) 한국육종학회 1985 한국육종학회지 Vol.17 No.2
This experiment was carried out to investigate the differences in performance related to earliness between barley and wheat. Early, intermediate, and late varieties of wheat and barley were tested. In contrast with barley, the average heading dates of early and intermediate varieties of wheat were 6 to 7 days later at Suweon, Daejon and Milyang. However, the average maturing dates of these wheat cultivars were 5 days later than those of barley. Wheat needed higher growing temperature, larger in earliness in narrow sense and short day response than barley. The young spike initiation of wheat varieties proceeded smoothly and non-linearly after sowing, but after young floral primordia initiation(stage Ⅳ-Ⅴ) in early spring, the young spike development proceeded rapidly. In general, the young spike development in wheat, in contrast with barley, was two or three stages later and was sensitive to low temperature.
Speciation of genus glycine and origin of cultivated soybean
Jung Hoon Kang(姜正勳),Wan Sik Ahn(安完植),Seok dong Kim(金奭東) 한국육종학회 1994 한국육종학회지 Vol.26 No.2
Cytogenetic, morphological, and seed protein studies suggest that G. soja is the wild ancestor of the cultivated soybean. Linguistic, geographical and historical evidences pinpoint the eastern half of north China as the area from which soybean emerged as a domesticate during the 11 century B.C. and then spread to other southeast Asian countries. Perhaps Manchuria should be designated as a secondary gene center and the eastern half of north China should be the primary center. Due to the fact that soybeans are day-length sensitive, they spread much easier between east and west than between north and south. The soybeans grown in Korea are derived populations from the northeast China and north China, and those grown in Japan are derived from southern Korea and central China. The number of USA soybean collections is quite small when compared with that of cereal crops which are two to five times larger. Nowadays there is considerable genetic erosion in the world. So most of genetic diversity will have disappeared soon without any systematic conservation effort.