水稻 新品種의 適應性

김랑춘,李秉昶 慶北大學校 産業開發硏究所 1976 硏究報告 Vol.4 No.-

The performance stability of fourteen varieties (or strains) including Tongil grown at six locations of Kyungpook Province in 1975 was determined by the statistical methods of Finlay and Wilkinson, and Eberhart and Russell. The restults indicated that Milyang 23 was the most productive and adaptable variety at six locations in Kyungpook Province.

고추 1代雜種에 있어서 收量構成形質과 收量과의 關係

김랑춘 慶北大學校 1976 論文集 Vol.22 No.-

This study was conducted to determine the direct or indirect effects of yield components to the early or total yields in red pepper by path-coeffient analysis. Twelve F_1 hybrids which were made from diallal crosses with four varieties (621, Takanozume, 2520, Hot Portugal) were used. The highest direct effect upon the early yield was fruit weight, followed by the number of fruit per plant and the days to flowering. The number of fruit per plant had the highest direct effect upon the total yield and next were fruit weight and stem diameter. It can be concluded that the fruit weight had directly or indirectly important effects on the early or total yields and that the number of fruit per plant should be considered in the selection for the higher production.

농촌순례 : 각국 농촌의 새로운 경향 : 「 오리지 」 국의 농업

김랑춘 대한지방행정공제회 1965 地方行政 Vol.14 No.143

율무(薏苡)의 播種期差異에 따른 形質相關에 對하여

김랑춘,李準琸 慶北大學校 産業開發硏究所 1975 硏究報告 Vol.3 No.-

This experiments were investigated to obtain the cultural information of pearl barley(Coix lachryma-jobi L. mayuen (ROMAN) STAPF) in the upland field by different seeding dates. The obtained results were summarized as follows: 1. According to late of the seeding date, heading date and maturing date were delayed. Plant height, number of tillers, 100 grain weight, weight of straw per plant, yield(weight of grain per plant) and maturirg ratio were decreased, but number of grain per tiller was increased. 2. It was injured by European corn borer (Pyrausta nubilalis HUBNER), the earier the seeding date, the greater the injury. But diseases were not found during the pearl barley was grown. 3. Yield was showed negative correlations with plant height and 100 grain weight in the plot seeded on June 15th, but was showed highly positive correlations in other characters regardless of seeding dates. Generally, number of tillers was showed negative correlations with number of grain per tiller and 100 grain weight, but was showed positive correlations with weight of straw per plant and yield. 4. In the plot seeded on May 15th, there were highly positive correlations between all characters, except number of tillers was showed negative correlation with number of grain per tiller. In the plot seeded on June 15th, 100 grain weight was showed negative correlations with all characters.

고추에 있어서 主要形質間의 相關

김랑춘,朴小守 慶北大學校 1972 論文集 Vol.16 No.-

This study was performed in order to obtain the basic information for successful selection of varieties with high yield in red pepper. For this, eleven varieties were used ad materials and correlations between characters were investigated. Those varieties were derived by line separation method from local varieties which have grown in Korea. The results obtained were summarized as follows: 1) Number of fruit per plant (early yield) was negatively correlated to days to flowering, leaf size and fruit weight, but positively correlated to total number of fruit per plant and fruit weight per plant (early yield). 2) There were negative correlations between fruit weight per plant (early yield) and days to flowering, and positive correlation between number of fruit per plant (early yield) and total number of fruit per plant. 3) Total number of fruit per plant was negatively correlated to leaf size and a fruit weight. There was comparatively high positive correlation between total number of and weight of fruit per plant. 4) Total weight of fruit per plant was positively correlated to fruit weight per plant (early yield) negatively correlated to days to flowering with comparatively high value, and it had relatively high correlation with number of fruit per plant (early yield), total number of fruit per plant and fruit weight per plant (late yield). 5) Days to flowering had positive correlation with plant height and leaf size. And there was positive correlation between plant height and stem diameter. 6) Fruit weight was positively correlated to fruit length, width of pericarp and number of seed per fruit.

마늘의 遺傳的 變異

김랑춘 慶北大學校 1977 論文集 Vol.23 No.-

Seven varieties in southern and twenty varieties in northern ecotypes of garlic were used for this study. Genetic variability for plant height, leaf length, flower stalk length, bulb diameter, bulb height, clove number per bulb and bulb weight were estimated. The results obtained were summarized as follows: The genetic coefficient of variation ranged from 1.1% for leaf length to 23.7% for flower stalk length in southern ecotype and from 5.0% for plant height to 39.2% for flower stalk length in northern ecotype. All the investigated characters excepting clove number showed a comparatively high genetic coefficient of variability in northern ecotype than in souhern. Both phenotypic and genetypic variances were more or less similiar in all cases and were very high for flower stalk length. Characters having high heritability in broad sense were flower stalk length (92.0%) and bulb weight (80.7%) in southern and bulb weight (94.0%), flower stalk length (87.6%), plant height (77.7%), leaf length (79.7%) bulb diameter(74.3%) in northern. Flower stalk length and bulb weight showed high genetic advance as the percentage of mean. From the above results it was postulated that selection for bulb weight composing yield would be effective.

무우의 種子生産 機構分析

김랑춘 慶北大學校 1973 論文集 Vol.17 No.-

The studies were made to get the informations for growing of radish seed production. For this, 12 vaireties or straines including Minong were used as materials for this study, and the correlations between some characters were investigated and the components of seed production were analyzed by the use of the method of path-coefficients. The results obtined were summarized in following. 1. There were highly positive correlations among plant height, stem diameter, plant weight, number of branches and number of capsules in phenotypic correlations, and these characters exhibited high correlations with seed yield. 2. Plant height and stem diameter had a direct positive inference upon the seed production and others had a direct negative. The most high direct effect upon the seed production were shown in the plant height and the next was stem diameter, plant height, number of branches and number of capsules in order. Plant height and stem diameter effect directly on seed production with hight extent and the other characters effect indirectly. At the results above-mentiond, it was dicovered that the plant height and the stem diamter had importent effects on seed production both directly and indirectly.

이면교배(二面交配)에 의한 고추 과실형질(果實形質)의 유전분석

박규환,김랑춘 한국육종학회 1983 한국육종학회지 Vol.15 No.2

수도립형(水稻粒型)에 관련된 몇가지 형질의 유전

황흥구,손재근,김랑춘 한국육종학회 1984 한국육종학회지 Vol.16 No.2

水稻의 登熟向上에 關한 硏究

諸商律,李寅杰,김랑춘,李準琸,張南日,洪鍾旭 慶北大學校 1974 論文集 Vol.18 No.-

This study was made to get the cultural information for increasing yield with recently improved variety, investigating the effects of different transplanting date and seed size, the number of plant per hill on the growth, and the yield and yield components in rice. The results obtained were summaried as follows: 1. In larger seed, the percentage of germination was higher and the early growth was more vigorous. However, there appeared no effects of seed size in the later growing period. 2. When the young plants sown on April 26 were transplanted on 5th, 15th, 25th of June and 5th of July with 10-days interval, the heading date was promoted in earlier transplanted plots. The days to heading, however, was shortend. 3. In the case of the earlier transplanting in Tongil variety, the maximum number of tillers was increased, the percentage of effective tillers was decreased, and the rate of ripened grains was slightly higher. The yield was the highest in the transplanted plot of June 25. The next came the transplanted plots of 25th, 5th of June and 5th of July. In the early transplanted plot of Palkweong variety, heading was also promoted. The days required for heading were also proportionly shortend, the number of the effective tillers was smaller and the percentage of ripened grains also decreased. The productivity was the highest in transplanted plot of June 25. 4. When the number of plants per hill was increased, the heading date was promoted, the number of panicles was high and the number of grains per panicles was decreased. In the early transplanting of Tongil variety, the yields was the highest in 4-plants plot. When transplanted late, it was the highest in 6-plant plot. In Palkweong variety, there was general tendency of increasing of yield as the number of plants per hill increased. 5. The dwarf disease of Tongil variety and the stripe disease of Palkweong variety occurred much in case of the lesser number of plants per hill and the earlier transplanting.