통합 검색 | Korea Science

조명조;류익상;김진형
- 한국연초학회지
- /
- 제11권2호
- /
- pp.157-179
- /
- 1989
This Study was conducted to estimate the degree of dominance and gene frequency of some sueful characters in tobacco. The eight parents and a set of 28 crosses of F'1s was F'2s were used as materials, and planted on oriental's and burley cultivated system as randomized block designs, respectively. The observed characters were six agronomic characters which were plant height, number of leaves per plant, leaf length, leaf width, days to flowering and yield, and the data obtained from the experiment were analyzed from methods by Hayman's and Jinks. The results obtained are summarized as follows: 1. In Vr-Wr graphical analysis, number of leaves per plant, leaf length, days to flowering and yield were found to be inherited in partial dominance, and plant height was over dominance to be similar to complete dominance, but leaf width was inherited with partial dominance close to complete dominance. 2. In the gene frequency, two varieties Xanthi-Basma and KA 102, for days to flowering and yield had larger number of dominant genes as those were situated near the point of origen. 3. Additive effects of genes(D) were greater than dominance effects of Genes(H) for six agronomic characters except plant height, and mean degree of dominance over all loci was lower than 1 for days to flowering yield, leaf length and number of leaves per plant.
PDF

김종수;조장환
- 한국작물학회지
- /
- 제33권4호
- /
- pp.360-369
- /
- 1988
중부지방에 있어서 과맥의 유용형질에 대한 유전율, 유전상관, 경로계수, 선발지수 및 유전적 진보의 선발효과를 구명코자 백동외 8품종을 공시하여 단국대학교 농과대학의 전작포장에서 실험을 실시하였던 바 그 결과를 요약하면 다음과 같다. 1. 과맥 품종군의 유전율은 간장, m$^2$당 수수는 높은 유전력을 보였으며 기타 형질은 비교적 낮았고 천립중은 매우 낮았다. 2. 일반적으로 유전상관은 표현형상관보다 높았으며 수량과 타형질과의 유전상관은 총생체중, 수중, 수중대고중비는 고도의 정상관이 있었고 간장, 수장, 1수립수, 수당불임입수와는 높은 부상관을 나타냈다. 3. 수량에 관하여는 형질을 보다 정확히 알기 위하여 경로계수를 분석한 바 총생체중, 수중대고중비 및 천립중 등이 수량에 직접적으로 영향하였다. 4. 선발효율을 높이기 위한 각 형질의 선발지수 및 수량에 대한 유전적 진보를 계산한 결과 2~3 개 형질을 대상으로 하여 Selection score가 큰 계통부터 선발해 가는 것이 시간과 노력 그리고 선발효과면에서 유리할 것으로 보였다.
PDF

한철수;김용암;정기택;이종두;권구홍
- 한국연초학회지
- /
- 제9권1호
- /
- pp.45-55
- /
- 1987
For some basic information in tobacco breeding, the modes of inheritance and heritabilities for the twelve agronomic and chemical characters were estimated in the study of eight varieties partial diallel set. Additive gene actions were significant for all characters except total nitrogen content and dominance gene effects were also significant for all characters. Yield, number of leaves per plant, leaf length and leaf shape index were inherited as partial dominance, and overdominance was detected for plant height, stem diameter, internode length, total alkaloid, total nitrogen and total sugar content. Dominant gene showed increasing effects in yield, plant height, stem diameter, internode length, leaf width and total sugar content, but showed decreasing effects in the other characters. The broad heritability was very high for all characters. and the narrow heritability was high in days to flower and yield, but low in internode length, total alkaloid, total nitrogen and total sugar content.
PDF