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허삼남,김동암 ( Sam N . Hur,Dong Am Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6
Growth characteristics of Dystaenia takesimana at inhabitats were studied through investigating the distribution and growth status of D. takesimana, surrounding vegetations, and soil and climatic conditions. The results obtained were as follows: 1. D. takesimana grew all over Ulneung island and its vegetation and growth were better in shady and fertile areas than sunny and infertile areas. 2. D. takesimana was much depressed by the competition with wild grasses on a sunny place, but this plant was very shade resistant. 3. As the precipitation is evenly distributed and the range of temperature is narrow during the year in Ulneung island, the climate is suitable for tlne growth of D. takesimana in inhabitats. 4. There was a highly significant relationship between soil moisture and organic matter content, and the growth of D. takesimana was better in the soil of high pH, organic matter and mineral content at inhabitats.
섬바디 유식물의 생장에 관한 연구 2 . 발아중 양분변화
허삼남,김동암 ( Sam Nam Hur,Dong Am Kim ) 한국축산학회 1982 한국축산학회지 Vol.24 No.4
To find out the factors causing the slow germination of Dystoenio takesimana, changes in the seed reserves during germination were investigated. The results obtained were as follows: 1. The carbohydrate in seeds of D. tokesimana was much exhausted due to respiration before germination and was not greatly exhausted during germination, which was different from the case of alfalfa or orchardgrass. 2. The protein content of seeds of D. takesimana increased in a linear pattern as germination progressed. 3. There was little change in the fat content of D. takesimana seeds during germination, while the fat content of alfalfa and orchardgrass seeds were greatly decreased. 4. It is suggested that slow germination of D. takesimana may be due to poor mobilization of seed reserves.
섬바디의 생육특성에 관한 연구 제1보 섬바디의 발아특성
허삼남,김동암,박훈 ( Sam Nam Hur,Dong Am Kim,Hun Park . ) 한국축산학회 1977 한국축산학회지 Vol.19 No.3
Investigations were conducted into the imbibition rates of seeds, changes of seed viability after harvest, and the effects of specific gravity of seeds and high temperature treatment on germination to shorten the period of germination after seeding. Tire results are summarized as follows: 1. The lipid content of Dystaenia takesimana was 28.65% which was much higher than that of alfalfa or orchardgrass. 2. With KOH scarification imbibition rate was increased by more than two times and the optimum temperature was 20℃. 3. The percent germination was reduced gradually after harvest and rapidly after 45 days getting zero after one year. 4. The percent germination was increased by increase of the specific gravity of seeds and breeding heavier and larger seeds to improve seedling growth is suggested. 5. With high temperature treatment of the seeds at 40℃ in pregermination, the percent germination was increased from 44.3 to 91.1%. 6. It would appear that the slow germination of Dystaenia takesianana may be due to poor mobilization of seed reserves, an innate character of the seed.
섬바디의 생육특성에 관한 연구 제2보 섬바디의 유식물 생육특성
허삼남,김동암,박훈 ( Sam Nam Hur,Dong Am Kim,Hun Park . ) 한국축산학회 1977 한국축산학회지 Vol.19 No.3
This study was designed to find out the reasons of the slow growth of Dystaenia takesimana in its early stages and ultimately to promote early growth. To study the growth characteristics of this species, the seedling growth rate, the effect of growth regulators, chlorophyll content in fresh leaves and the relationship between soil characteristics and seedling growth were examined. The results obtained are summarized as follows: 1. The root growth of Dystaenia takesimana was very poor in the early stage and the growth curve of root was quite different from that of alfalfa and orchardgrass. 2. The chlorophyll content of Dystaenia takesimana was very low in the seeding year compared with other pasture plants. 3. With the treatment of gibbereilic acid the plant height of Dystaenia takesimana was considerably promoted, however, this kind of treatment could not be a practical method at the field level. 4. The growth of Dystaenia takesimama was closely related with organic matter, boron and moisture content in the soil. 5. As the results of this study, it was suggested that t11e early growth of Dystaenia takesimana could be promoted 1) by shortening the period of germination with the high temperature treatment (40℃) of the seeds is pre-germination and 2) by the application of compost to the field, and selection for good seminal root development is important to improve establishment.
섬바디 유식물의 생장에 관한 연구 제1보 . 초장 및 무게의 변화
허삼남,김동암 ( Sam N . Hur,Dong Am Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6
To find out the factors causing the slow germination and seedling growth of Dystaenia takesimana, investigations were conducted into the seed reserves, shoot and seminal root growth of D. takesimana, alfalfa, and orchardgrass. The results obtained were as follows 1. The seminal root of D, takesimana emerged later and grew slower than those of alfalfa. 2. The dry weight of the seeds of D. takesimana slightly decreased during germination, while the seeds of alfalfa and orchardgrass greatly decreased, indicating a slower utilization of seed reserves for D. takesimana. 3. D. takesimana attains a higher root weight per 100 seedlings in the dark, however D. takesimana took much more days to reach its maximum weight than alfalfa or orchardgrass. 4. Of the three species examined the seedlings of D. takesimana shower the lowest growth rate. 5. Initially the seminal root of D. takesimana elongated slower than the shoot, while orchardgrass showed a quicker elongation of seminal root than the shoot. 6. The seedling growth could be improved by selection and breeding the strains with better germination and root growth, as the germination and growth characteristics of D. takesimana were variable.