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- 저자 : Y. H. Chung(鄭潤和) (검색결과 2 건)
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Y. H. Chung(鄭潤和),J. K. Hwang(黃周光),S. C. Lee(李承哲),S. H. Son(孫世鎬) 한국육종학회 1982 한국육종학회지 Vol.14 No.1
The influence of cytoplasms from different Nicotiana species on flue-cured tobacco (N. tabacum var. Hicks) was studied. Means of normal Hicks and CMS Hicks (4 malesterile lines) were compared for a few agronomic and chemical traits. Days to flower, plant height, and total alkaloids were significantly different at 1% level, and leaf width and yield at 5% level. Early field growth of CMS plants with different cytoplasms was slower than normal Hicks. CMS Hicks lines with these cytoplasms showed recovery of subsequent growth and no significant differences in quality of cured leaves.
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雄性不姙 Burley 種 담배에 있어서 二面交配에 依한 量的形質의 遺伝分析
Y. H. Chung(鄭潤和),S. Y. Jeh(諸商律) 한국육종학회 1982 한국육종학회지 Vol.14 No.1
To obtain basic information for the burley tobacco breeding, a partial diallel set (including the F₁) of four cytoplasmic male sterile parents and their male fertile varieties were grown in a randomized block design with 2 replications. The percent of heterosis and specific combining ability, degree and direction of dominance were evaluated. Positive or negative heterosis and heterobeltiosis were observed in each character depending upon F₁ combinations. Average percent of heterosis for plant height, yield, and total alkaloids were shown io positive value, while clays to flowering and number of leaves per plant were shown negative. Average heterobeltiosis for yield was shown in positive value and other characters were shown in negative values. In analysis of combility, GCA was greater than SCA in five characters. L-8 expressed high negative GCA effect in plant height, number of leaves per plant and yield. The highest positive SCA effects were expressed in MS Burley 21×L-8 and MS Burley 37 × L-8 crosses for plant height, days to flowering and yield. Yield exhibited overdominance and other characters showed partial dominance. More dominant alleles were present than recessive, indicated by positive F values. The direction of dominance in plant height, yield, and total alkaloid were positive, and that of days to flewer and number of leaves per plant negative.
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