• Sijohaknonchong
• /
• v.20
• /
• pp.197-215
• /
• 2004

In this paper, I reexamined the word 'Sijo-samjang(시조삼강)' and gave a new meaning of it. In addition, I proposed the new concept of 'Sijo-samjang' which meant the characteristic of a Pyon'ga(편가) in Sijo-chang(시조창). For a long time, 'Sijo-samjang' was regarded as a word which indicated the three sections of a Sijo. It was because of the fixed idea that a Sijo was always composed of a form separated by three parts. Unlike the fixed idea, I found the fact that 'Sijo-samjang' meant singing successively three different Sijos which adapted three different music by reexamining the actual uses of the word in the texts of the days. Thus, I could come to a conclusion that 'Sijo-samjang' was the word indicating a specific music system of a Sijo-chang(singing a Sijo) corresponding to a Pyon'ga of a Gagok(가곡). 'Sijo-samjang' seemed to be molded up while the music of Sijo-chang developed. Usually, a successive singing of the three different Sijos, such as Pyong-sijo(평시조), Chirum-sijo(지름시조), and Sasol-sijo(사설시조), was called 'Sijo-samjang'. However, some of the three could be omitted, and some of it could be substituted by a derived song. This kind of a usual and a derived form seemed to be settled as an important custom of singing a Silo after the 19 century. The main point of the development of music in Sijo-chang was having the characteristic of compilation which meant singing Pyong-sijo, Chirum-sijo, and Sasol-sijo successively. 'Sijo-samjang' was the concept which explained this kind of characteristic and was one of the key words to understand the development of Sijo-chang.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.21 no.1
• /
• pp.15-19
• /
• 1976

Germination and growth of sourgrass, and its competition with improved pasture species, buffelgrass and guineagrass were studied. Optimum germination was obtained under light with alternating temperatures. Germination was stimulated by GA but greatly decreased as moisture .stress was increased. Sourgrass in pastures can be controlled through competition with buffelgrass or guineagrass.

• Korean Journal of Weed Science
• /
• v.15 no.3
• /
• pp.214-223
• /
• 1995

Tolerant corn cultivars to bentazon were selected and tolerance mechanism of corn cultivars to bentazon was studied by determining bentazon 6-hydroxylase(B6H) activity which was known to detoxify bentazon to 6-hydroxy bentazon at induced enzyme conditions with treatments of 1,8-naphthalic anhydride, ethanol and phenobarbital. Tolerant cultivars to bentazon were selected by growth response of corn by foliar application of bentazon to corn cultivars. Kwanganok, GA 209, IK 2, DB 544, and Suwon 19 were tolerant to bentazon, but KSS 3, KSS 4, KS 5, and Danok 2 were susceptible. Pretreating corn seeds with 1,8-naphthalic anhydride increased B6H activity at all cultivars, but the tendencies were more remarkable at Suwon 19 and GA 209, tolerant cultivars, than at Danok 2 and KS 5, susceptible cultivars. Treating corn shoots with ethanol increased B6H activity at Suwon 19 and GA 209. B6H activity was enhanced by treatments of ethanol at 1.0 or 2.5%, but decreased at ethanol 2.5 or 5.0% at Danok 2 and KS 5. Treating corn shoots with phenobarbital increased B6H activity at Suwon 19, GA 209, Danok 2, and KS 5 by treatments of phenobarbital at 2.0mM, but decreased at 4.0 or 8.0mM at all cultivars. Therefore, the tolerant mechanism of corn cultivars to bentazon may be explained partially by the activity of bentazon 6-hydroxylase which detoxifies bentazon to 6-hydroxy bentazon.