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벼 침수토중 직파 재배 연구 I. 온도 및 파종 심도에 따른 출아 및 초기 생육
박석홍,이철원,양원하,박래경,Park, Seok-Hong,Lee, Chul-Won,Yang, Won-Ha,Park, Rae-Kyeong 한국작물학회 1986 한국작물학회지 Vol.31 No.2
The objective of this paper was to examine the response of rice seedling emergence and early growth under the different temperature (day/night, 29/21$^{\circ}C$, 17/17$^{\circ}C$, 12/12$^{\circ}C$) and the different seeding depth (1 cm, 2 cm, 3 cm). The trial was carried out in the phytotron and field in the Crop Experiment Station, Suwon, Korea in 1985. Calcium peroxide-coated seeds were very effctive in promoting seedling emergence, seedling establishment and eary growth of rice. Coated seeds were more effective in low temperature condition (17/17$^{\circ}C$, 12/12$^{\circ}C$) than in high temperature (29/21$^{\circ}C$) at the phytotron trial. The deeper the seeding depth, the less the emergence and seedling establishment, and the available seeding depth was I cm in the direct seeding under the flooded soil. In the field trial (seeding date, May 1) the results for the emergence and seedling establishment were similar to those in the phytotron trial. Available cultivars for the direct seeding cultivation under the flooded soil were Cheonmabyeo, Namyangbyeo, Kihobyeo, Akibare, Nakdongbyeo and Dongjinbyeo in Japonica type, and Taebaegbyeo, Samgangbyeo and Gayabyeo in Indica x Jponica type. Coefficients of variation to the emergence and seedling establishment between rice cultivars were very high. Therefore, in the direct seeding cultivation under the submerged paddy, choice of rice cultivars and improved technique for direct seeding will be more necessary.
Young Hee Son(孫永姬),Keun Yong Park(朴根龍),Byung Han Choi(崔炳漢),Seung Ue Park(朴勝義),Rae Kyeong Park(朴來敬) 한국육종학회 1990 한국육종학회지 Vol.22 No.3
To shorten down our breeding cycle by the di-haploid induced through the anther culture technique, factors affecting the anther culturability in maize were revised. Among 13 hybrids tested, P3424 and Ching-Huang 13 were best genotypes for anther culture. The induction ratio were 0.71% in Ching-Huang 13 and 0.64% in P3424. Ninety three embryoids induced from 49,200 anthers plated and 11 plantlets produced from these embryoids. Microspores in early-uninucleate stage responded to culture in Ching-Huang 13. Leaf number can be a good growth index for the tassels bearing the uninucleate microspores. Anthers in one tassel varied in their developmental stages. Anther culture efficiency improved by the cold pretreatment and osmotic pressure. A 9℃-14 days treatment brought the best result. The effect of osmotic pressure was rather remarkable ; maximum of 5 times in producing plantlets. Among 11 plantlets produced 4 plants were survived and were detected as haploids. Through colchicine treatment 2 kernels were harvested. Further studies should be followed to confirm the above results.
정길웅,홍은희,김석동,황영현,이영호,박래경,Chung, Kil-Woong,Hong, Eun-Hi,Kim, Seok-Dong,Hwang, Young-Hyun,Lee, Yeong-Ho,Park, Rae-Kyeong 한국작물학회 1988 Korean journal of crop science Vol.33 No.S
Soybean grain is most widely used and soybean crop produces most high protein per area among crops. To meet rapid increase of human population and supply protein in safety. soybean has considered more and more important crop. And it has been emphasizing that high quality and high protein soybean breeding must be made efforts in future. Many papers related to soybean breeding for high quality and protein and soybean protein composition have suggested the problems to do in future. Soybean germplasm collection. classification and conservation should be continuously performed, and it is emphasized that wild type of soybeans (G. soja) be considered to use in breeding for high protein varieties. Selections would be better emphasized in first yield and therefore high yield of protein per area. Selection for high protein would be secondary criterion. High protein lines with high yielding potential could be selection from certain populations, and breeders should consider this phenomenon in procedure of selection. Heritability of protein percent is relatively high and genetic gain of increment of protein percent is large. Soybean protein which is comprised 70 to 90% of globulin is constituted mostly 11S and 7S proteins. Sulfur-containing amino acids, methionine and cysteine, are identified to contain more in 11S protein than 7S protein. High 11S germplasm should be desirable to use in crossing plan, and selection of high ratio of 11S/7S lines be better in development of high quality varieties.
메밀 遺傳資源의 播種期에 대한 反應에 따른 生態型 分類
Byung Han Choi(崔炳漢),Keun Yong Park(朴根龍),Rae Kyeong Park(朴來敬) 한국육종학회 1996 한국육종학회지 Vol.28 No.1
Worldwide genetic resources of buckwheat have been collected and evaluated for their flowering, seed set, agronomic traits and grain yield at Suwon, Korea from 1988 to 1993. Most of South Korea landraces belonged to fall buckwheat, and flowered without matured seeds in spring planting. Thus the genetic resources were classified into two groups of summer and fall type buckwheats. In general, summer type buckwheats produced more grain yield than fall type buckwheat when planted in early spring. Fall type buckwheats produced grain only in mid or late July planting. The optimum planting season for summer type buckwheats was mid April resulting in doubling the grain yields of fall type buckwheats. The direct effects of flowering time, stem length and branch number on grain yield were positive, but the direct effects of emergence time, lodging and node number on grain yield were negative. Particularly, positive direct-effect of fertility degree of buckwheat plant on grain yield was the highest being 0.84 to 0.95, and demonstrating the greatest direct-effect for higher grain yield and with branch number per plant.
Byung Han Choi(崔炳漢),Keun Yong Park(朴根龍),Rae Kyeong Park(朴來敬) 한국육종학회 1990 한국육종학회지 Vol.22 No.2
Buckwheat(Fagopyrum esculentum Moench) has been a popular favorite food crop in Korea for a long time. Ninety five Korean landrace populations were planted on July 29, 1988 and August 3, 1989 and evaluated their flowering characteristics and kernel productivity in Suwon. The initial flowering date was August 25 with mean flowering date of August 30, and mean maturing date was October 6, 1988. The range of the landrace populations was 12 to 14 days for flowering date, and only four days for maturing date. The mean perccntage of pin type flower plant was 49.3% being reached near the theoretical percentage. For kernel productivity, the pin type produced 12.3g per plant and the thrum type 13.3g per plant. The mean kernel yield of the populations was 12.8g per plant. The best landrace population produced 28g per plant being 1,800kg per hectare. The coefficient of variation was 0.3%, 0.5% for flowering and maturing dates respectively, 21.6% for pin type plant percentage, and 52.6-54.9% for kernel yield per plant. Thus it would be expected to develop superior cultivars with higher kernel productivity.
眞珠조의 雄性不稔 및 稔性自殖系統間 交雜에서 主要形質들이 靑刈收量에 미치는 直接 및 間接效果
Byung Han Choi(崔炳漢),Keun Yong Park(朴根龍),Rae Kyeong Park(朴來敬) 한국육종학회 1989 한국육종학회지 Vol.21 No.2
It is important to decide what traits should be considered in selecting parental lines for crosses between cytoplasmic, genic male sterile seed parents and fertile pollen parents for higher green fodder yield of newly developed hybrids of pearl millet. The objective of the study was to examine the direct and indirect effects of the important traits on green fodder yield and their associations in crosses of cytoplasmic, genic male sterile seed parents and fertile pollen parents. Consistent positive direct effects on green fodder yield were detected for culm and plant height and tillers per plant. Black streaked dwarf virus incidence appeared to have negative direct influence in determining green fodder yield. Particularly in saline soil, seedling emergence rate and plant height had the most significant positive influence on green fodder yield. The indirect effects of heading date was high and positive via plant height and seedling emergence rate. High coefficients of determination for green fodder yield with plant height and culm length were also detected in crosses of cytoplasmic, genic male sterile seed parents and fertile pollen parents.
水稻品種의 二面交雜에 依한 量的形質의 遺傳分析 Ⅱ. 자포니카 水稻品種의 收量 및 收量構成形質에 대한 組合能力
Tae Soon Kwak(郭泰淳),Byung Tae Jun(田炳泰),Soo Yeon Cho(趙守衍),Rae Kyeong Park(朴來敬) 한국육종학회 1988 한국육종학회지 Vol.20 No.4
The general combining ability and specific combining ability of yield and yield components such as no.of panicles per hill, no.of spikelets per panicle, 1000-grain weight, and grain ripened ratio were studied on F₁ and F₂ generations of 15 crosses from the partial diallel cross of 6 Japonica rice varieties. The effects of GCA and SCA were significant for yield and yield component characters and the GCA of yield component characters was greater than SCA, but SCA of yield was greater than GCA. The effects of GCA and SCA were different from generations and characters. The GCA and SCA effects of yield and no.of spikelets per panicle were quite great. Rice varieties, RAC 3 and Samnambyeo as parents were quite effective for increasement of no of spikelets per panicle but crosses which had Shin 2 as female parent showed positive greater SCA effects. There were significant correlations between generations in variance and ranks of parental GCA effects of no.of panicles per hill, but non-significant to yield which has consisted by multiple characters such as yield component characters.
참깨의 開花 및 登熟에 관한 硏究 Ⅸ. 참깨 有限開花性의 遺傳分析
Bong Ho Lee(李奉鎬),Jung Il Lee(李正日),Nak Sul Seong(成洛戌),Rae Kyeong Park(朴來敬),Sung Il Kim(金成日),Chul Whan Kang(姜哲煥) 한국육종학회 1990 한국육종학회지 Vol.22 No.1
Breeding of determinate-flowering type in sesame is being attempted in Crop Experiment Station. In an attempt to make a gene analysis of the determinate-flowering characteristics, two set of F₁, F₂, BC₁F₁, BC₂F₁ which made using Ahnsan and Hanseom as an indeterminate parent and SIGH8705-2 as a determinate parent were applied in the experiment in 1989. Among the characteristics of determinate parent, number of capsules per plant were lesser than those of the indeterminate varieties which is important characteristics to be improved in determinate-flowering type. Inheritance of determinate-flowering characteristics is recognized to be controlled by the single recessive gene, from the segregation ratio of indeterminate and determinate as 3:1 in F₂ population of indeterminate and determinate cross, and 1:1 in test cross of BC₂F₁ population.