한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)
- 제7권1호
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- Pages.71-78
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- 1969
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
한국수도품종의 형태변이에 관한 연구 -제2보 한국수도품종의 변천에 따른 외부형태 및 수량구성요소의 변이
Studies on the Varietal Variation in Morphology of, the Korean Rice Cutivars -II. Varietal variation in morphology of vegetative organs and in yield components along the periodical changes of the Korean rice varieties-
- 발행 : 1969.12.01
초록
한국수도품종의 시대적 변천에 따른 그들 품종의 외부형태와 수량 및 수량구성요소의 변이를 살펴보고저 년대별 주요품종3개씩 18개품종을 시료로 하여 6개품종군
To study the varietal differences of vegetative organs, yield and yield components along the periodical changes of rice variety in korea, this experiment was conducted in 1968. Eighteen used varieties were grouped into 6 varietal groups by the cultivated period as follow.: 1) Group I - Korean local varieties cultivated about 1907, 2) Group II - introduced varieties cultivated in 1907 - 1930, 3) Group III - introduced varieties cultivated in 1930-1960, 4) Group IV - improved varieties cultivated in 1930-1960, 5) Group V - introduced varieties cultivated after 1960 and 6) Group VI - improved varieties cultivated after 1960. 1. Varietal Group I showed the longest leaves, the largest leaf area, the lowest value of leaf area index and the highest value of flag leaf angle. Along the periodical changes of rice varieties the leaf length, the total leaf area and the flag leaf angle were decreased, and the leaf area index was increased. 2. Varietal Group I showed higher value of the length and the weight of leaf sheath than those of Group II, III, IV, V and VI. The length of every internode was longer in Group I than in the other varietal groups. The weight of every internode was shown higher value in Group 1. The length and the weight of every internode were decreased along the periodical changes of rice variety. 3. Varietal Group I and Group III showed the higher value of culm length, panicle length and the number of grain per panicle length and groups. Group IV, V and VI had the higher value of the number of panicle, the maturing rate and the 1, 000 grains weight. Varietal Group V and VI which are cultivated in recent years showed shorter culm and panicle length, higher value of the maturing rate and the 1, 000 grains weight, and intermediate in the number of panicle and the number of grain per panicle. 4. The lowest value of straw weight was found in Group I. The highest value of grain yield was shown in Group VI, intermediate in Group II, III, IV and V and lowest in Group I. Grain-straw ratio was shown highest in Group VI.
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