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Gwan Seok Seo(徐寬錫),Jung Il Lee(李正日),Ju Yeol Lee(李主烈),Jun Ki Kim(金俊基),In Jin Park(朴仁珍) 한국육종학회 1986 한국육종학회지 Vol.18 No.1
This experiment was conducted to compare the fruit yield and quality of the boxthorn(Lycium chinese Mill.) landraces grown in the northern and southern regions. The ripening stage of northern landraces was four to seven days earlier as compared with sonthern landraces. The northern landraces had better for agronomic characters including stem lenth and diameter than the southern landraces, and had small and dark green leaves,and Sharp thorns,but the southern ones had large and light green leaves. Haenam landrace had not thorns. The northern landraces were more susceptable to antracnose than the southern one, and there was no difference in mite resistance between the landraces. The phe photosynthesis abilityof northern landraces were higher than that of southern ones at early growth stage(by mid-June), but vice versa after early Juld. The northern landraces had much more dryweight and leat area than the southern ones. It was assumed that the differences among landraces were mostly due to the characteristis of each landrace rather than due to the regions where each landrace had been grown. The extract content of Kwangju iandraec was higher than that of Daejeon landrace. The higher amount of extracts of the Kwangju landrace might be due to the daily high temperature and more sunshine in the Kwangju area.
Gwan Seok Seo(徐寬錫),Jung Il Lee(李正日) 한국육종학회 1987 한국육종학회지 Vol.19 No.1
This experiment was conducted to investigate the physiological and ecological characteristics, and obtain the basic data for breeding disaster resistance and high yielding varieties at Daejeon, Chung Nam from 1984 to 1986. Varieties used in this experiment were 29 native varities collected in Korea and oversea and 9 mutant species treated with Co 60 and Colchicine. Dry fruit yield of Japanese-2 variety was 108Kg per 10a and 56% increased compared with standard cultured variety. Iycii cortex yield was 7.9Kg per 10a and increased 259% with Colchicine treatment. As the photosynthesis from May to August and R.G.R. treated with Co 60 had been high, the growth and development was posperous but flowering time was delayed 7-15 days. Also, as the number of flowering but per plant had been scarce, dry fruit yield was decreased 32% compared with Cheongyang variety. Yearly differences of principal characteristics in upper and lower parts was small but varietal difference of principal characteristics was obvious and varietal heritability was high.
Gwan Seok Seo(徐寬錫),Jung Il Lee(李正日) 한국육종학회 1987 한국육종학회지 Vol.19 No.2
This experiment was conducted to investigate the inorganic matter of leaf, Betain content of root organic matter of fruit and fruit extracts according to the various growing stage. Also, there were the studies on the relation between various fertilizer and its components and obtained the basic data for breeding good high yielding varieties. Varieties used in this experiment were 29 native varieties collected in Korea and oversea and 9 mutant species and planted at Daejeon, Chungnam in 1986. The inorganic matter of leaf and organic matter obsorption of fruit, N and Protein, P₂O₅ and Fat, and K₂O and Carbohydrate significant positive correlation. The releation between fat content and fruit extracts showed significant positive correlation. And there was significant negative correlation between carbohydrate, and protein content and extracts. The content of extracts and fruit yield of Japanese-2 variety was the highest of all and Lycii cortex yield and Betain content of variety treated with Colchicine 0.1% was the highest of all. And than, these varieties could be promising variety to use for breeding high yielding variety.